Load Specifications
Bullet Manufacturer:Peregrine
Bullet Weight:231 gr
Bullet Diameter:0.338"
Bullet Length:<<locked>>
Caliber:.338 Rem. Ultra Mag. load data
Case Length (l3):2.76"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:110 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:12.0
Load data in caliber .338 Rem. Ultra Mag. with .338 | 231gr | Peregrine VLR5 (VLR-5) bullet and 187 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate High Country, Norma MRP and Vihtavuori N560.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 82% | 57,406 psi | 90% | 2598 fps | 100% |
| Accurate 2495 | <<locked>> | 82% | 57,406 psi | 90% | 2598 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 55,245 psi | 87% | 2635 fps | 99.4% |
| Accurate 2700 | <<locked>> | 82% | 55,245 psi | 87% | 2635 fps | 99.4% |
| Accurate 3100 | <<locked>> | 98% | 54,041 psi | 85% | 2680 fps | 100% |
| Accurate 3100 | <<locked>> | 98% | 54,041 psi | 85% | 2680 fps | 100% |
| Accurate 4064 | <<locked>> | 82% | 54,447 psi | 85% | 2608 fps | 100% |
| Accurate 4064 | <<locked>> | 82% | 54,447 psi | 85% | 2608 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 55,869 psi | 88% | 2720 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 55,869 psi | 88% | 2720 fps | 100% |
| Accurate High Country | <<locked>> | 96% | 55,680 psi | 87% | 2825 fps | 98.6% |
| Accurate High Country | <<locked>> | 96% | 55,680 psi | 87% | 2825 fps | 98.6% |
| Accurate MAGPRO | <<locked>> | 98% | 56,637 psi | 89% | 2822 fps | 97.7% |
| Accurate MAGPRO | <<locked>> | 98% | 56,637 psi | 89% | 2822 fps | 97.7% |
| ADI AR 2208 | <<locked>> | 84% | 54,636 psi | 86% | 2648 fps | 100% |
| ADI AR 2208 | <<locked>> | 84% | 54,636 psi | 86% | 2648 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 57,101 psi | 89% | 2772 fps | 99.3% |
| ADI AR 2209 | <<locked>> | 96% | 57,101 psi | 89% | 2772 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 98% | 54,752 psi | 86% | 2769 fps | 98.2% |
| ADI AR 2213 | <<locked>> | 98% | 54,752 psi | 86% | 2769 fps | 98.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 37,463 psi | 59% | 2507 fps | 97.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 37,463 psi | 59% | 2507 fps | 97.2% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 57,334 psi | 90% | 2769 fps | 99.3% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 57,334 psi | 90% | 2769 fps | 99.3% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 57,334 psi | 90% | 2769 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 55,666 psi | 87% | 2667 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 55,666 psi | 87% | 2667 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 55,680 psi | 87% | 2687 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 55,680 psi | 87% | 2687 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 56,985 psi | 89% | 2776 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 56,985 psi | 89% | 2776 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 54,476 psi | 85% | 2743 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 54,476 psi | 85% | 2743 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 56,550 psi | 89% | 2759 fps | 99.3% |
| Alliant Reloder-19 | <<locked>> | 96% | 56,550 psi | 89% | 2759 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 98% | 54,027 psi | 85% | 2766 fps | 99.1% |
| Alliant Reloder-22 | <<locked>> | 98% | 54,027 psi | 85% | 2766 fps | 99.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 54,708 psi | 86% | 2743 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 54,708 psi | 86% | 2743 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 47,253 psi | 74% | 2687 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 47,253 psi | 74% | 2687 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 96% | 55,245 psi | 87% | 2828 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 96% | 55,245 psi | 87% | 2828 fps | 100% |
| Baschieri & Pellagri 109ᴾ | <<locked>> | 100% | 57,464 psi | 90% | 2733 fps | 95.8% |
| Baschieri & Pellagri 109ᴾ | <<locked>> | 100% | 57,464 psi | 90% | 2733 fps | 95.8% |
| Bofors RP15ᴾ | <<locked>> | 100% | 52,997 psi | 83% | 2749 fps | 98.9% |
| Bofors RP15ᴾ | <<locked>> | 100% | 52,997 psi | 83% | 2749 fps | 98.9% |
| Bofors RP3 | <<locked>> | 84% | 56,608 psi | 89% | 2684 fps | 100% |
| Bofors RP3 | <<locked>> | 84% | 56,608 psi | 89% | 2684 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 43,105 psi | 68% | 2615 fps | 96.4% |
| Bofors RP30ᴾ | <<locked>> | 100% | 43,105 psi | 68% | 2615 fps | 96.4% |
| Bofors RP5 | <<locked>> | 98% | 54,027 psi | 85% | 2766 fps | 99.1% |
| Bofors RP5 | <<locked>> | 98% | 54,027 psi | 85% | 2766 fps | 99.1% |
| Bofors RP7 | <<locked>> | 88% | 55,782 psi | 87% | 2677 fps | 99.6% |
| Bofors RP7 | <<locked>> | 88% | 55,782 psi | 87% | 2677 fps | 99.6% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 46,963 psi | 74% | 2638 fps | 97.5% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 46,963 psi | 74% | 2638 fps | 97.5% |
| Hodgdon H380 | <<locked>> | 84% | 56,753 psi | 89% | 2700 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 56,753 psi | 89% | 2700 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 54,491 psi | 85% | 2723 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 88% | 54,491 psi | 85% | 2723 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 88% | 57,595 psi | 90% | 2736 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 88% | 57,595 psi | 90% | 2736 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 96% | 54,868 psi | 86% | 2717 fps | 97.6% |
| Hodgdon H4831 | <<locked>> | 96% | 54,868 psi | 86% | 2717 fps | 97.6% |
| Hodgdon H4831 SC | <<locked>> | 98% | 57,566 psi | 90% | 2753 fps | 98% |
| Hodgdon H4831 SC | <<locked>> | 98% | 57,566 psi | 90% | 2753 fps | 98% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 57,188 psi | 90% | 2700 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 57,188 psi | 90% | 2700 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 46,369 psi | 73% | 2733 fps | 98.7% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 46,369 psi | 73% | 2733 fps | 98.7% |
| Hodgdon Superformance | <<locked>> | 88% | 54,766 psi | 86% | 2759 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 88% | 54,766 psi | 86% | 2759 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,419 psi | 57% | 1680 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,419 psi | 57% | 1680 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 57,566 psi | 90% | 2677 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 57,566 psi | 90% | 2677 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 56,507 psi | 89% | 2664 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 82% | 56,507 psi | 89% | 2664 fps | 99.8% |
| IMR 4350 | <<locked>> | 92% | 57,145 psi | 90% | 2710 fps | 99.7% |
| IMR 4350 | <<locked>> | 92% | 57,145 psi | 90% | 2710 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 88% | 57,508 psi | 90% | 2703 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 88% | 57,508 psi | 90% | 2703 fps | 99.8% |
| IMR 4831 | <<locked>> | 92% | 56,376 psi | 88% | 2713 fps | 100% |
| IMR 4831 | <<locked>> | 92% | 56,376 psi | 88% | 2713 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 57,130 psi | 90% | 2713 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 57,130 psi | 90% | 2713 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 56,231 psi | 88% | 2703 fps | 98% |
| IMR 4955 Enduron | <<locked>> | 96% | 56,231 psi | 88% | 2703 fps | 98% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 56,057 psi | 88% | 2802 fps | 98.5% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 56,057 psi | 88% | 2802 fps | 98.5% |
| Lovex S062 | <<locked>> | 82% | 54,230 psi | 85% | 2621 fps | 100% |
| Lovex S062 | <<locked>> | 82% | 54,230 psi | 85% | 2621 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 57,537 psi | 90% | 2694 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 57,537 psi | 90% | 2694 fps | 100% |
| Lovex S070 | <<locked>> | 90% | 55,622 psi | 87% | 2690 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 55,622 psi | 87% | 2690 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,848 psi | 75% | 2592 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,848 psi | 75% | 2592 fps | 99.6% |
| Norma 203B | <<locked>> | 82% | 54,984 psi | 86% | 2674 fps | 100% |
| Norma 203B | <<locked>> | 82% | 54,984 psi | 86% | 2674 fps | 100% |
| Norma 204 | <<locked>> | 90% | 54,331 psi | 85% | 2710 fps | 98.8% |
| Norma 204 | <<locked>> | 90% | 54,331 psi | 85% | 2710 fps | 98.8% |
| Norma MRP | <<locked>> | 96% | 53,795 psi | 84% | 2789 fps | 99.8% |
| Norma MRP | <<locked>> | 96% | 53,795 psi | 84% | 2789 fps | 99.8% |
| Norma URP | <<locked>> | 90% | 54,694 psi | 86% | 2710 fps | 100% |
| Norma URP | <<locked>> | 90% | 54,694 psi | 86% | 2710 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 55,985 psi | 88% | 2700 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 55,985 psi | 88% | 2700 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 56,753 psi | 89% | 2818 fps | 98.9% |
| Ramshot Grandᴾ | <<locked>> | 100% | 56,753 psi | 89% | 2818 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 92% | 57,203 psi | 90% | 2762 fps | 100% |
| Ramshot Hunter | <<locked>> | 92% | 57,203 psi | 90% | 2762 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 50,749 psi | 80% | 2700 fps | 99.2% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 50,749 psi | 80% | 2700 fps | 99.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,173 psi | 58% | 1719 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,173 psi | 58% | 1719 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 56,768 psi | 89% | 2690 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 56,768 psi | 89% | 2690 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 53,896 psi | 84% | 2733 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 53,896 psi | 84% | 2733 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 55,985 psi | 88% | 2743 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 55,985 psi | 88% | 2743 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 54,592 psi | 86% | 2776 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 54,592 psi | 86% | 2776 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 46,412 psi | 73% | 2726 fps | 99.5% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 46,412 psi | 73% | 2726 fps | 99.5% |
| Rottweil R 902 | <<locked>> | 82% | 56,043 psi | 88% | 2631 fps | 100% |
| Rottweil R 902 | <<locked>> | 82% | 56,043 psi | 88% | 2631 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 56,652 psi | 89% | 2677 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 56,652 psi | 89% | 2677 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 54,955 psi | 86% | 2694 fps | 98.2% |
| Rottweil R 904 | <<locked>> | 94% | 54,955 psi | 86% | 2694 fps | 98.2% |
| Rottweil R 905 | <<locked>> | 96% | 55,622 psi | 87% | 2746 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 96% | 55,622 psi | 87% | 2746 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 88% | 55,782 psi | 87% | 2677 fps | 99.6% |
| Rottweil R 907 | <<locked>> | 88% | 55,782 psi | 87% | 2677 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 90% | 57,537 psi | 90% | 2694 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 90% | 57,537 psi | 90% | 2694 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 54,230 psi | 85% | 2621 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 54,230 psi | 85% | 2621 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 55,622 psi | 87% | 2690 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 90% | 55,622 psi | 87% | 2690 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 54,708 psi | 86% | 2687 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 54,708 psi | 86% | 2687 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 57,392 psi | 90% | 2566 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 57,392 psi | 90% | 2566 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 57,305 psi | 90% | 2654 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 57,305 psi | 90% | 2654 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 55,158 psi | 86% | 2740 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 55,158 psi | 86% | 2740 fps | 99.2% |
| Somchem S355 | <<locked>> | 86% | 56,536 psi | 89% | 2677 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 56,536 psi | 89% | 2677 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 56,710 psi | 89% | 2684 fps | 97.8% |
| Somchem S361 | <<locked>> | 94% | 56,710 psi | 89% | 2684 fps | 97.8% |
| Somchem S365 | <<locked>> | 92% | 54,360 psi | 85% | 2707 fps | 100% |
| Somchem S365 | <<locked>> | 92% | 54,360 psi | 85% | 2707 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 56,362 psi | 88% | 2723 fps | 99.7% |
| Somchem S385 | <<locked>> | 96% | 56,362 psi | 88% | 2723 fps | 99.7% |
| Vihtavuori N135 | <<locked>> | 82% | 56,652 psi | 89% | 2589 fps | 100% |
| Vihtavuori N135 | <<locked>> | 82% | 56,652 psi | 89% | 2589 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 56,985 psi | 89% | 2605 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 56,985 psi | 89% | 2605 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 54,360 psi | 85% | 2605 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 54,360 psi | 85% | 2605 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 56,710 psi | 89% | 2700 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 56,710 psi | 89% | 2700 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 55,738 psi | 87% | 2697 fps | 99.5% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 55,738 psi | 87% | 2697 fps | 99.5% |
| Vihtavuori N540 | <<locked>> | 82% | 55,129 psi | 86% | 2605 fps | 100% |
| Vihtavuori N540 | <<locked>> | 82% | 55,129 psi | 86% | 2605 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 55,796 psi | 87% | 2707 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 55,796 psi | 87% | 2707 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 57,000 psi | 89% | 2762 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 57,000 psi | 89% | 2762 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 53,954 psi | 85% | 2782 fps | 97.8% |
| Vihtavuori N560 | <<locked>> | 96% | 53,954 psi | 85% | 2782 fps | 97.8% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 49,255 psi | 77% | 2694 fps | 97.1% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 49,255 psi | 77% | 2694 fps | 97.1% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 56,507 psi | 89% | 2667 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 56,507 psi | 89% | 2667 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 54,737 psi | 86% | 2726 fps | 99.8% |
| Winchester 760 | <<locked>> | 88% | 54,737 psi | 86% | 2726 fps | 99.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 50,894 psi | 80% | 2808 fps | 100% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 50,894 psi | 80% | 2808 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 56,594 psi | 89% | 2720 fps | 99.2% |
| Winchester Supreme 780 | <<locked>> | 98% | 56,594 psi | 89% | 2720 fps | 99.2% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 53,722 psi | 84% | 2556 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 53,722 psi | 84% | 2556 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 51,634 psi | 81% | 2582 fps | 99% |
| Accurate 2700 | <<locked>> | 80% | 51,634 psi | 81% | 2582 fps | 99% |
| Accurate 3100 | <<locked>> | 82% | 30,777 psi | 48% | 2260 fps | 95.5% |
| Accurate 3100 | <<locked>> | 82% | 30,777 psi | 48% | 2260 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 50,995 psi | 80% | 2566 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 50,995 psi | 80% | 2566 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,276 psi | 62% | 2461 fps | 99.4% |
| Accurate 4350 | <<locked>> | 80% | 39,276 psi | 62% | 2461 fps | 99.4% |
| Accurate High Country | 78.9 gr | 88% | 41,727 psi | 65% | 2589 fps | 95.5% |
| Accurate High Country | 78.9 gr | 88% | 41,727 psi | 65% | 2589 fps | 95.5% |
| Accurate MAGPRO | <<locked>> | 92% | 45,498 psi | 71% | 2644 fps | 95.1% |
| Accurate MAGPRO | <<locked>> | 92% | 45,498 psi | 71% | 2644 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 48,240 psi | 76% | 2552 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 48,240 psi | 76% | 2552 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 38,232 psi | 60% | 2451 fps | 95.3% |
| ADI AR 2209 | <<locked>> | 84% | 38,232 psi | 60% | 2451 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 92% | 44,570 psi | 70% | 2598 fps | 95.9% |
| ADI AR 2213 | <<locked>> | 92% | 44,570 psi | 70% | 2598 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 98% | 35,114 psi | 55% | 2448 fps | 96.2% |
| ADI AR 2225 | <<locked>> | 98% | 35,114 psi | 55% | 2448 fps | 96.2% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 38,421 psi | 60% | 2451 fps | 95.4% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 38,421 psi | 60% | 2451 fps | 95.4% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 38,421 psi | 60% | 2451 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,907 psi | 77% | 2575 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,907 psi | 77% | 2575 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 52,199 psi | 82% | 2641 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 52,199 psi | 82% | 2641 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,203 psi | 60% | 2474 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,203 psi | 60% | 2474 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,845 psi | 69% | 2589 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,845 psi | 69% | 2589 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 38,043 psi | 60% | 2444 fps | 95.3% |
| Alliant Reloder-19 | <<locked>> | 84% | 38,043 psi | 60% | 2444 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 88% | 38,276 psi | 60% | 2490 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 88% | 38,276 psi | 60% | 2490 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,876 psi | 44% | 2244 fps | 97.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,876 psi | 44% | 2244 fps | 97.9% |
| Alliant Reloder-25 | <<locked>> | 86% | 29,820 psi | 47% | 2306 fps | 95.6% |
| Alliant Reloder-25 | <<locked>> | 86% | 29,820 psi | 47% | 2306 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 80% | 30,008 psi | 47% | 2352 fps | 96.7% |
| Alliant Reloder-26 | <<locked>> | 80% | 30,008 psi | 47% | 2352 fps | 96.7% |
| Baschieri & Pellagri 109 | <<locked>> | 98% | 54,012 psi | 85% | 2684 fps | 95% |
| Baschieri & Pellagri 109 | <<locked>> | 98% | 54,012 psi | 85% | 2684 fps | 95% |
| Bofors RP15 | <<locked>> | 90% | 37,927 psi | 59% | 2480 fps | 95.3% |
| Bofors RP15 | <<locked>> | 90% | 37,927 psi | 59% | 2480 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 49,371 psi | 77% | 2585 fps | 100% |
| Bofors RP3 | <<locked>> | 80% | 49,371 psi | 77% | 2585 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 40,248 psi | 63% | 2559 fps | 95.5% |
| Bofors RP30 | <<locked>> | 98% | 40,248 psi | 63% | 2559 fps | 95.5% |
| Bofors RP5 | <<locked>> | 88% | 38,276 psi | 60% | 2490 fps | 95.6% |
| Bofors RP5 | <<locked>> | 88% | 38,276 psi | 60% | 2490 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 43,236 psi | 68% | 2477 fps | 97.8% |
| Bofors RP7 | <<locked>> | 80% | 43,236 psi | 68% | 2477 fps | 97.8% |
| Hodgdon H1000 | <<locked>> | 96% | 40,843 psi | 64% | 2520 fps | 95.6% |
| Hodgdon H1000 | <<locked>> | 96% | 40,843 psi | 64% | 2520 fps | 95.6% |
| Hodgdon H380 | <<locked>> | 80% | 49,647 psi | 78% | 2602 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 49,647 psi | 78% | 2602 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 41,423 psi | 65% | 2510 fps | 98% |
| Hodgdon H414 | <<locked>> | 80% | 41,423 psi | 65% | 2510 fps | 98% |
| Hodgdon H4350 | <<locked>> | 80% | 44,382 psi | 70% | 2526 fps | 97.4% |
| Hodgdon H4350 | <<locked>> | 80% | 44,382 psi | 70% | 2526 fps | 97.4% |
| Hodgdon H4831 | <<locked>> | 90% | 44,657 psi | 70% | 2552 fps | 95.2% |
| Hodgdon H4831 | <<locked>> | 90% | 44,657 psi | 70% | 2552 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 90% | 43,787 psi | 69% | 2536 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 90% | 43,787 psi | 69% | 2536 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,824 psi | 56% | 2369 fps | 99.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,824 psi | 56% | 2369 fps | 99.7% |
| Hodgdon Retumbo | <<locked>> | 94% | 37,898 psi | 59% | 2549 fps | 96% |
| Hodgdon Retumbo | <<locked>> | 94% | 37,898 psi | 59% | 2549 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 40,495 psi | 63% | 2523 fps | 97.5% |
| Hodgdon Superformance | <<locked>> | 80% | 40,495 psi | 63% | 2523 fps | 97.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,296 psi | 43% | 1503 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,296 psi | 43% | 1503 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,763 psi | 80% | 2582 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,763 psi | 80% | 2582 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 53,055 psi | 83% | 2615 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 80% | 53,055 psi | 83% | 2615 fps | 99.6% |
| IMR 4350 | <<locked>> | 80% | 38,914 psi | 61% | 2411 fps | 96.7% |
| IMR 4350 | <<locked>> | 80% | 38,914 psi | 61% | 2411 fps | 96.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,701 psi | 70% | 2503 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,701 psi | 70% | 2503 fps | 98.5% |
| IMR 4831 | <<locked>> | 80% | 37,811 psi | 59% | 2418 fps | 99.2% |
| IMR 4831 | <<locked>> | 80% | 37,811 psi | 59% | 2418 fps | 99.2% |
| IMR 4895 | <<locked>> | 80% | 53,563 psi | 84% | 2664 fps | 100% |
| IMR 4895 | <<locked>> | 80% | 53,563 psi | 84% | 2664 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 43,627 psi | 68% | 2500 fps | 95.1% |
| IMR 4955 Enduron | <<locked>> | 88% | 43,627 psi | 68% | 2500 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 92% | 42,612 psi | 67% | 2572 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 92% | 42,612 psi | 67% | 2572 fps | 95.4% |
| Lovex S062 | <<locked>> | 80% | 51,053 psi | 80% | 2579 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 51,053 psi | 80% | 2579 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 42,018 psi | 66% | 2454 fps | 99% |
| Lovex S065 | <<locked>> | 80% | 42,018 psi | 66% | 2454 fps | 99% |
| Lovex S070 | <<locked>> | 80% | 40,335 psi | 63% | 2441 fps | 97.8% |
| Lovex S070 | <<locked>> | 80% | 40,335 psi | 63% | 2441 fps | 97.8% |
| Lovex S071 | <<locked>> | 86% | 30,139 psi | 47% | 2247 fps | 95.2% |
| Lovex S071 | <<locked>> | 86% | 30,139 psi | 47% | 2247 fps | 95.2% |
| Norma 203B | <<locked>> | 80% | 51,547 psi | 81% | 2628 fps | 100% |
| Norma 203B | <<locked>> | 80% | 51,547 psi | 81% | 2628 fps | 100% |
| Norma 204 | <<locked>> | 80% | 38,450 psi | 60% | 2434 fps | 95.2% |
| Norma 204 | <<locked>> | 80% | 38,450 psi | 60% | 2434 fps | 95.2% |
| Norma MRP | 75.3 gr | 84% | 34,882 psi | 55% | 2441 fps | 95.9% |
| Norma MRP | 75.3 gr | 84% | 34,882 psi | 55% | 2441 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 39,146 psi | 61% | 2457 fps | 99.3% |
| Norma URP | <<locked>> | 80% | 39,146 psi | 61% | 2457 fps | 99.3% |
| Ramshot Big Game | <<locked>> | 80% | 52,330 psi | 82% | 2651 fps | 100% |
| Ramshot Big Game | <<locked>> | 80% | 52,330 psi | 82% | 2651 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 42,279 psi | 66% | 2579 fps | 95.7% |
| Ramshot Grand | <<locked>> | 92% | 42,279 psi | 66% | 2579 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 38,072 psi | 60% | 2448 fps | 97.9% |
| Ramshot Hunter | <<locked>> | 80% | 38,072 psi | 60% | 2448 fps | 97.9% |
| Ramshot Magnum | <<locked>> | 90% | 34,838 psi | 55% | 2402 fps | 95.1% |
| Ramshot Magnum | <<locked>> | 90% | 34,838 psi | 55% | 2402 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,731 psi | 43% | 1539 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,731 psi | 43% | 1539 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,676 psi | 78% | 2589 fps | 99.6% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,676 psi | 78% | 2589 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,601 psi | 73% | 2635 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,601 psi | 73% | 2635 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,276 psi | 62% | 2480 fps | 99.2% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,276 psi | 62% | 2480 fps | 99.2% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 38,000 psi | 60% | 2490 fps | 98.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 38,000 psi | 60% | 2490 fps | 98.9% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 34,809 psi | 55% | 2470 fps | 95.9% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 34,809 psi | 55% | 2470 fps | 95.9% |
| Rottweil R 902 | <<locked>> | 80% | 52,765 psi | 83% | 2589 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 52,765 psi | 83% | 2589 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 46,456 psi | 73% | 2536 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 46,456 psi | 73% | 2536 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 42,308 psi | 66% | 2484 fps | 95.4% |
| Rottweil R 904 | <<locked>> | 86% | 42,308 psi | 66% | 2484 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 84% | 37,028 psi | 58% | 2425 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 84% | 37,028 psi | 58% | 2425 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 43,236 psi | 68% | 2477 fps | 97.8% |
| Rottweil R 907 | <<locked>> | 80% | 43,236 psi | 68% | 2477 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,018 psi | 66% | 2454 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,018 psi | 66% | 2454 fps | 99% |
| Shooters World Precision | <<locked>> | 80% | 51,053 psi | 80% | 2579 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 51,053 psi | 80% | 2579 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,335 psi | 63% | 2441 fps | 97.8% |
| Shooters World SW4350 | <<locked>> | 80% | 40,335 psi | 63% | 2441 fps | 97.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,935 psi | 75% | 2592 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,935 psi | 75% | 2592 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,558 psi | 75% | 2441 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,558 psi | 75% | 2441 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,176 psi | 65% | 2405 fps | 97.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,176 psi | 65% | 2405 fps | 97.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 36,680 psi | 57% | 2418 fps | 95% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 36,680 psi | 57% | 2418 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 46,557 psi | 73% | 2536 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 46,557 psi | 73% | 2536 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 46,253 psi | 72% | 2526 fps | 95.6% |
| Somchem S361 | <<locked>> | 88% | 46,253 psi | 72% | 2526 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 35,723 psi | 56% | 2418 fps | 100% |
| Somchem S365 | <<locked>> | 80% | 35,723 psi | 56% | 2418 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 35,114 psi | 55% | 2359 fps | 95.4% |
| Somchem S385 | <<locked>> | 82% | 35,114 psi | 55% | 2359 fps | 95.4% |
| Vihtavuori N135 | <<locked>> | 80% | 53,243 psi | 83% | 2546 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 53,243 psi | 83% | 2546 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 53,461 psi | 84% | 2562 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 53,461 psi | 84% | 2562 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 44,599 psi | 70% | 2467 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 44,599 psi | 70% | 2467 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,538 psi | 64% | 2454 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 80% | 40,538 psi | 64% | 2454 fps | 99.4% |
| Vihtavuori N165 | <<locked>> | 88% | 37,159 psi | 58% | 2392 fps | 95.8% |
| Vihtavuori N165 | <<locked>> | 88% | 37,159 psi | 58% | 2392 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 51,590 psi | 81% | 2556 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 51,590 psi | 81% | 2556 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,929 psi | 63% | 2457 fps | 99.3% |
| Vihtavuori N550 | <<locked>> | 80% | 39,929 psi | 63% | 2457 fps | 99.3% |
| Vihtavuori N555 | <<locked>> | 80% | 31,024 psi | 49% | 2316 fps | 97.9% |
| Vihtavuori N555 | <<locked>> | 80% | 31,024 psi | 49% | 2316 fps | 97.9% |
| Vihtavuori N560 | 80.7 gr | 90% | 43,671 psi | 68% | 2608 fps | 95.3% |
| Vihtavuori N560 | 80.7 gr | 90% | 43,671 psi | 68% | 2608 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 96% | 42,830 psi | 67% | 2582 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 96% | 42,830 psi | 67% | 2582 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,784 psi | 62% | 2425 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,784 psi | 62% | 2425 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 41,597 psi | 65% | 2513 fps | 98% |
| Winchester 760 | <<locked>> | 80% | 41,597 psi | 65% | 2513 fps | 98% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,598 psi | 39% | 2228 fps | 97.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,598 psi | 39% | 2228 fps | 97.3% |
| Winchester Supreme 780 | <<locked>> | 88% | 39,639 psi | 62% | 2448 fps | 95.9% |
| Winchester Supreme 780 | <<locked>> | 88% | 39,639 psi | 62% | 2448 fps | 95.9% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 187 powders for .338 Rem. Ultra Mag. loaded with the .338 | 231gr | Peregrine VLR5 (VLR-5). Alliant Reloder-26 delivers the highest muzzle velocity at 2,828 fps; across all powders the maximum-charge window runs from 1,680 fps to 2,828 fps. ADI AR 2225 gives the best case fill at 100 %, and 187 of the 187 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 231.0 gr projectile in 0.338" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. ADI AR 2225, ADI AR 2225, Alliant Reloder-23 reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. Accurate High Country, Norma MRP, Vihtavuori N560 rank at the top here: for .338 Rem. Ultra Mag. with the .338 | 231gr | Peregrine VLR5 (VLR-5) they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.