Load Specifications
Bullet Manufacturer:Peregrine
Bullet Weight:225 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:1:11.5
Load data in caliber .338 Rem. Ultra Mag. with .338 | 225gr | Peregrine VLR-4 bullet and 185 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, 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% | 56,304 psi | 88% | 2618 fps | 100% |
| Accurate 2495 | <<locked>> | 82% | 56,724 psi | 89% | 2625 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 54,288 psi | 85% | 2651 fps | 99.2% |
| Accurate 2700 | <<locked>> | 82% | 54,549 psi | 85% | 2654 fps | 99.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 56,579 psi | 89% | 2743 fps | 100% |
| Accurate 3100ᴾ | <<locked>> | 100% | 57,058 psi | 89% | 2753 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 56,927 psi | 89% | 2674 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 57,334 psi | 90% | 2680 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 54,621 psi | 86% | 2736 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 54,955 psi | 86% | 2743 fps | 100% |
| Accurate High Country | <<locked>> | 96% | 54,607 psi | 86% | 2841 fps | 98.3% |
| Accurate MAGPRO | <<locked>> | 98% | 55,245 psi | 87% | 2831 fps | 97.2% |
| Accurate MAGPRO | <<locked>> | 98% | 55,753 psi | 87% | 2841 fps | 97.3% |
| ADI AR 2208 | <<locked>> | 86% | 57,261 psi | 90% | 2713 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 57,551 psi | 90% | 2720 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 55,898 psi | 88% | 2785 fps | 99% |
| ADI AR 2209 | <<locked>> | 96% | 56,391 psi | 88% | 2795 fps | 99.1% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 57,334 psi | 90% | 2838 fps | 98.4% |
| ADI AR 2213 | <<locked>> | 98% | 53,824 psi | 84% | 2789 fps | 97.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 36,608 psi | 57% | 2510 fps | 96.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 36,767 psi | 58% | 2513 fps | 96.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 57,072 psi | 89% | 2835 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 57,450 psi | 90% | 2838 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 56,376 psi | 88% | 2789 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 54,636 psi | 86% | 2687 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 54,984 psi | 86% | 2694 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 54,665 psi | 86% | 2707 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 54,984 psi | 86% | 2713 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 55,753 psi | 87% | 2792 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 56,086 psi | 88% | 2799 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 57,174 psi | 90% | 2812 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 57,508 psi | 90% | 2818 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 55,376 psi | 87% | 2776 fps | 99% |
| Alliant Reloder-19 | <<locked>> | 96% | 55,622 psi | 87% | 2779 fps | 99% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 56,463 psi | 88% | 2831 fps | 99.2% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 56,927 psi | 89% | 2838 fps | 99.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 53,359 psi | 84% | 2756 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 53,838 psi | 84% | 2766 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,137 psi | 72% | 2697 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,528 psi | 73% | 2707 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 96% | 53,679 psi | 84% | 2841 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 96% | 53,998 psi | 85% | 2844 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 51,750 psi | 81% | 2759 fps | 98.5% |
| Bofors RP15ᴾ | <<locked>> | 100% | 51,982 psi | 81% | 2766 fps | 98.6% |
| Bofors RP3 | <<locked>> | 84% | 55,492 psi | 87% | 2703 fps | 100% |
| Bofors RP3 | <<locked>> | 84% | 55,608 psi | 87% | 2703 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 56,463 psi | 88% | 2831 fps | 99.2% |
| Bofors RP5ᴾ | <<locked>> | 100% | 56,927 psi | 89% | 2838 fps | 99.3% |
| Bofors RP7 | <<locked>> | 88% | 54,795 psi | 86% | 2694 fps | 99.4% |
| Bofors RP7 | <<locked>> | 88% | 55,100 psi | 86% | 2700 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 45,934 psi | 72% | 2641 fps | 96.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 46,137 psi | 72% | 2648 fps | 96.9% |
| Hodgdon H380 | <<locked>> | 84% | 55,695 psi | 87% | 2720 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 56,028 psi | 88% | 2726 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 56,956 psi | 89% | 2789 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 90% | 57,261 psi | 90% | 2795 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 88% | 56,521 psi | 89% | 2753 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 88% | 56,826 psi | 89% | 2756 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 98% | 57,667 psi | 90% | 2782 fps | 97.8% |
| Hodgdon H4831 | <<locked>> | 96% | 53,925 psi | 85% | 2733 fps | 97.2% |
| Hodgdon H4831 SC | <<locked>> | 98% | 56,347 psi | 88% | 2766 fps | 97.6% |
| Hodgdon H4831 SC | <<locked>> | 98% | 56,565 psi | 89% | 2772 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 55,970 psi | 88% | 2717 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 56,275 psi | 88% | 2720 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 57,290 psi | 90% | 2749 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 57,638 psi | 90% | 2756 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 45,266 psi | 71% | 2736 fps | 98.2% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 45,498 psi | 71% | 2743 fps | 98.3% |
| Hodgdon Superformance | <<locked>> | 90% | 57,711 psi | 90% | 2828 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 88% | 53,998 psi | 85% | 2779 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,332 psi | 57% | 1699 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,448 psi | 57% | 1703 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 57,609 psi | 90% | 2713 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 56,579 psi | 89% | 2694 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 56,898 psi | 89% | 2700 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 55,593 psi | 87% | 2684 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 82% | 55,898 psi | 88% | 2690 fps | 99.7% |
| IMR 4350 | <<locked>> | 92% | 56,072 psi | 88% | 2726 fps | 99.5% |
| IMR 4350 | <<locked>> | 92% | 56,347 psi | 88% | 2733 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 88% | 56,536 psi | 89% | 2720 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 88% | 56,840 psi | 89% | 2726 fps | 99.7% |
| IMR 4831 | <<locked>> | 92% | 55,201 psi | 87% | 2730 fps | 100% |
| IMR 4831 | <<locked>> | 92% | 55,506 psi | 87% | 2736 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 56,086 psi | 88% | 2730 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 56,434 psi | 88% | 2740 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 55,187 psi | 86% | 2717 fps | 97.5% |
| IMR 4955 Enduron | <<locked>> | 96% | 55,651 psi | 87% | 2726 fps | 97.6% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 54,795 psi | 86% | 2812 fps | 98.1% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 55,056 psi | 86% | 2818 fps | 98.2% |
| Lovex S062 | <<locked>> | 84% | 56,782 psi | 89% | 2687 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 57,130 psi | 90% | 2694 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 56,507 psi | 89% | 2713 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 56,811 psi | 89% | 2717 fps | 100% |
| Lovex S070 | <<locked>> | 90% | 54,578 psi | 86% | 2707 fps | 99.7% |
| Lovex S070 | <<locked>> | 90% | 54,868 psi | 86% | 2713 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 46,702 psi | 73% | 2602 fps | 99.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,166 psi | 74% | 2612 fps | 99.4% |
| Norma 203B | <<locked>> | 84% | 57,725 psi | 90% | 2743 fps | 100% |
| Norma 203B | <<locked>> | 82% | 54,288 psi | 85% | 2697 fps | 100% |
| Norma 204 | <<locked>> | 92% | 57,072 psi | 89% | 2779 fps | 99% |
| Norma 204 | <<locked>> | 92% | 57,334 psi | 90% | 2782 fps | 99.1% |
| Norma MRP | <<locked>> | 98% | 56,420 psi | 88% | 2858 fps | 99.9% |
| Norma MRP | <<locked>> | 98% | 56,681 psi | 89% | 2864 fps | 99.9% |
| Norma URP | <<locked>> | 92% | 57,203 psi | 90% | 2776 fps | 100% |
| Norma URP | <<locked>> | 92% | 57,522 psi | 90% | 2782 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 54,897 psi | 86% | 2717 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 55,216 psi | 87% | 2723 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 55,376 psi | 87% | 2828 fps | 98.5% |
| Ramshot Grandᴾ | <<locked>> | 100% | 55,825 psi | 87% | 2838 fps | 98.6% |
| Ramshot Hunter | <<locked>> | 92% | 56,014 psi | 88% | 2779 fps | 100% |
| Ramshot Hunter | <<locked>> | 92% | 56,318 psi | 88% | 2782 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 49,458 psi | 78% | 2707 fps | 98.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 49,705 psi | 78% | 2713 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,072 psi | 58% | 1739 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,173 psi | 58% | 1742 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 55,767 psi | 87% | 2707 fps | 99.9% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 56,057 psi | 88% | 2713 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 56,637 psi | 89% | 2802 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 57,000 psi | 89% | 2808 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 54,723 psi | 86% | 2759 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 55,013 psi | 86% | 2762 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 57,276 psi | 90% | 2844 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 57,537 psi | 90% | 2848 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 45,266 psi | 71% | 2730 fps | 99.1% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 45,629 psi | 72% | 2740 fps | 99.2% |
| Rottweil R 902 | <<locked>> | 82% | 55,100 psi | 86% | 2651 fps | 100% |
| Rottweil R 902 | <<locked>> | 82% | 55,463 psi | 87% | 2657 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 55,535 psi | 87% | 2697 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 55,898 psi | 88% | 2703 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 57,537 psi | 90% | 2756 fps | 98.4% |
| Rottweil R 904 | <<locked>> | 94% | 54,143 psi | 85% | 2710 fps | 97.9% |
| Rottweil R 905 | <<locked>> | 96% | 54,404 psi | 85% | 2759 fps | 99% |
| Rottweil R 905 | <<locked>> | 96% | 54,926 psi | 86% | 2769 fps | 99% |
| Rottweil R 907 | <<locked>> | 88% | 54,795 psi | 86% | 2694 fps | 99.4% |
| Rottweil R 907 | <<locked>> | 88% | 55,100 psi | 86% | 2700 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 90% | 56,507 psi | 89% | 2713 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 90% | 56,811 psi | 89% | 2717 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 56,782 psi | 89% | 2687 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 57,130 psi | 90% | 2694 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 54,578 psi | 86% | 2707 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 90% | 54,868 psi | 86% | 2713 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 57,406 psi | 90% | 2756 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 57,725 psi | 90% | 2762 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 56,449 psi | 88% | 2585 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 56,608 psi | 89% | 2589 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 56,275 psi | 88% | 2671 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 56,579 psi | 89% | 2674 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 53,940 psi | 85% | 2753 fps | 98.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 54,462 psi | 85% | 2762 fps | 99% |
| Somchem S355 | <<locked>> | 86% | 55,492 psi | 87% | 2694 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 55,796 psi | 87% | 2700 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 55,608 psi | 87% | 2697 fps | 97.4% |
| Somchem S361 | <<locked>> | 94% | 56,014 psi | 88% | 2703 fps | 97.5% |
| Somchem S365 | <<locked>> | 94% | 56,797 psi | 89% | 2772 fps | 100% |
| Somchem S365 | <<locked>> | 94% | 57,130 psi | 90% | 2776 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 55,158 psi | 86% | 2736 fps | 99.5% |
| Somchem S385 | <<locked>> | 96% | 55,448 psi | 87% | 2743 fps | 99.5% |
| Vihtavuori N135 | <<locked>> | 82% | 55,637 psi | 87% | 2608 fps | 100% |
| Vihtavuori N135 | <<locked>> | 82% | 56,014 psi | 88% | 2615 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 56,014 psi | 88% | 2625 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 56,144 psi | 88% | 2628 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 56,927 psi | 89% | 2667 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 57,246 psi | 90% | 2674 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 55,564 psi | 87% | 2717 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 55,883 psi | 88% | 2723 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 54,520 psi | 85% | 2710 fps | 99.2% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 54,955 psi | 86% | 2720 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 84% | 57,682 psi | 90% | 2667 fps | 100% |
| Vihtavuori N540 | <<locked>> | 82% | 54,505 psi | 85% | 2628 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 54,679 psi | 86% | 2723 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 54,955 psi | 86% | 2730 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 55,637 psi | 87% | 2779 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 56,217 psi | 88% | 2789 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 56,565 psi | 89% | 2851 fps | 98% |
| Vihtavuori N560 | <<locked>> | 98% | 56,840 psi | 89% | 2858 fps | 98.1% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 47,993 psi | 75% | 2700 fps | 96.5% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 48,414 psi | 76% | 2710 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 55,332 psi | 87% | 2684 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 55,622 psi | 87% | 2687 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 57,174 psi | 90% | 2795 fps | 99.8% |
| Winchester 760 | <<locked>> | 90% | 57,493 psi | 90% | 2799 fps | 99.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 49,197 psi | 77% | 2822 fps | 100% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 49,748 psi | 78% | 2831 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 55,347 psi | 87% | 2733 fps | 98.9% |
| Winchester Supreme 780 | <<locked>> | 98% | 55,811 psi | 87% | 2740 fps | 99% |
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% | 52,678 psi | 83% | 2575 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 53,040 psi | 83% | 2582 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 50,734 psi | 80% | 2595 fps | 98.7% |
| Accurate 2700 | <<locked>> | 80% | 51,024 psi | 80% | 2602 fps | 98.8% |
| Accurate 3100 | <<locked>> | 84% | 32,285 psi | 51% | 2326 fps | 95.9% |
| Accurate 3100 | <<locked>> | 82% | 30,240 psi | 47% | 2277 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 49,980 psi | 78% | 2585 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 50,357 psi | 79% | 2589 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,348 psi | 60% | 2470 fps | 99.1% |
| Accurate 4350 | <<locked>> | 80% | 38,682 psi | 61% | 2477 fps | 99.1% |
| Accurate High Country | <<locked>> | 90% | 44,034 psi | 69% | 2661 fps | 95.9% |
| Accurate MAGPRO | <<locked>> | 94% | 47,659 psi | 75% | 2710 fps | 95.4% |
| Accurate MAGPRO | <<locked>> | 94% | 48,124 psi | 75% | 2720 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 47,413 psi | 74% | 2572 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 47,732 psi | 75% | 2579 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 40,045 psi | 63% | 2513 fps | 95.5% |
| ADI AR 2209 | <<locked>> | 86% | 40,277 psi | 63% | 2520 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 92% | 43,627 psi | 68% | 2608 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 92% | 43,888 psi | 69% | 2615 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 98% | 34,316 psi | 54% | 2451 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 98% | 34,505 psi | 54% | 2457 fps | 95.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 53,113 psi | 83% | 2779 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 53,476 psi | 84% | 2785 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 40,451 psi | 63% | 2520 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,993 psi | 75% | 2592 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,327 psi | 76% | 2598 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,242 psi | 80% | 2657 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,561 psi | 81% | 2664 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,391 psi | 59% | 2484 fps | 99.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,695 psi | 59% | 2490 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 42,830 psi | 67% | 2602 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,120 psi | 68% | 2608 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 39,769 psi | 62% | 2507 fps | 95.6% |
| Alliant Reloder-19 | <<locked>> | 86% | 40,016 psi | 63% | 2513 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 90% | 40,118 psi | 63% | 2556 fps | 95.9% |
| Alliant Reloder-22 | <<locked>> | 88% | 37,623 psi | 59% | 2503 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,224 psi | 43% | 2251 fps | 97.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,441 psi | 43% | 2260 fps | 97.5% |
| Alliant Reloder-25 | <<locked>> | 88% | 31,125 psi | 49% | 2369 fps | 95.9% |
| Alliant Reloder-25 | <<locked>> | 88% | 31,314 psi | 49% | 2375 fps | 96.1% |
| Alliant Reloder-26 | 74.3 gr | 80% | 29,240 psi | 46% | 2356 fps | 95.9% |
| Alliant Reloder-26 | 74.3 gr | 80% | 29,457 psi | 46% | 2365 fps | 96.1% |
| Bofors RP15 | <<locked>> | 92% | 39,581 psi | 62% | 2543 fps | 95.6% |
| Bofors RP15 | <<locked>> | 92% | 39,827 psi | 62% | 2549 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 48,385 psi | 76% | 2605 fps | 100% |
| Bofors RP3 | <<locked>> | 80% | 48,544 psi | 76% | 2608 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 40,118 psi | 63% | 2556 fps | 95.9% |
| Bofors RP5 | <<locked>> | 88% | 37,623 psi | 59% | 2503 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 42,453 psi | 67% | 2490 fps | 97.3% |
| Bofors RP7 | <<locked>> | 80% | 42,569 psi | 67% | 2493 fps | 97.4% |
| Hodgdon H1000 | <<locked>> | 98% | 42,728 psi | 67% | 2582 fps | 95.8% |
| Hodgdon H1000 | <<locked>> | 98% | 43,091 psi | 68% | 2592 fps | 96% |
| Hodgdon H380 | <<locked>> | 80% | 48,704 psi | 76% | 2618 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 80% | 49,008 psi | 77% | 2625 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 40,538 psi | 64% | 2520 fps | 97.5% |
| Hodgdon H414 | <<locked>> | 80% | 40,814 psi | 64% | 2526 fps | 97.6% |
| Hodgdon H4350 | <<locked>> | 80% | 43,526 psi | 68% | 2539 fps | 96.9% |
| Hodgdon H4350 | <<locked>> | 80% | 43,656 psi | 68% | 2543 fps | 97% |
| Hodgdon H4831 | <<locked>> | 92% | 46,746 psi | 73% | 2615 fps | 95.5% |
| Hodgdon H4831 | <<locked>> | 92% | 46,978 psi | 74% | 2621 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 92% | 45,832 psi | 72% | 2598 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 92% | 46,064 psi | 72% | 2605 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,983 psi | 55% | 2382 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,128 psi | 55% | 2385 fps | 99.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 53,519 psi | 84% | 2700 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 53,853 psi | 84% | 2707 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 37,028 psi | 58% | 2552 fps | 95.1% |
| Hodgdon Retumbo | <<locked>> | 94% | 37,217 psi | 58% | 2559 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 39,595 psi | 62% | 2530 fps | 96.9% |
| Hodgdon Superformance | <<locked>> | 80% | 39,842 psi | 62% | 2539 fps | 97.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,224 psi | 43% | 1522 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,209 psi | 43% | 1522 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 54,041 psi | 85% | 2667 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,879 psi | 78% | 2602 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,227 psi | 79% | 2608 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 52,199 psi | 82% | 2635 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 80% | 52,489 psi | 82% | 2641 fps | 99.4% |
| IMR 4350 | <<locked>> | 80% | 38,145 psi | 60% | 2421 fps | 96.2% |
| IMR 4350 | <<locked>> | 80% | 38,261 psi | 60% | 2425 fps | 96.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,932 psi | 69% | 2520 fps | 98.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,222 psi | 69% | 2523 fps | 98.2% |
| IMR 4831 | <<locked>> | 80% | 36,970 psi | 58% | 2431 fps | 98.8% |
| IMR 4831 | <<locked>> | 80% | 37,086 psi | 58% | 2434 fps | 98.9% |
| IMR 4895 | <<locked>> | 80% | 52,576 psi | 82% | 2684 fps | 100% |
| IMR 4895 | <<locked>> | 80% | 52,924 psi | 83% | 2687 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 45,614 psi | 71% | 2562 fps | 95.4% |
| IMR 4955 Enduron | <<locked>> | 90% | 45,861 psi | 72% | 2569 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 94% | 44,570 psi | 70% | 2641 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 94% | 44,802 psi | 70% | 2644 fps | 95.8% |
| Lovex S062 | <<locked>> | 80% | 50,140 psi | 79% | 2598 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 50,270 psi | 79% | 2602 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,220 psi | 65% | 2467 fps | 98.6% |
| Lovex S065 | <<locked>> | 80% | 41,495 psi | 65% | 2474 fps | 98.7% |
| Lovex S070 | <<locked>> | 80% | 39,537 psi | 62% | 2454 fps | 97.4% |
| Lovex S070 | <<locked>> | 80% | 39,668 psi | 62% | 2457 fps | 97.4% |
| Lovex S071 | <<locked>> | 88% | 31,401 psi | 49% | 2303 fps | 95.5% |
| Lovex S071 | <<locked>> | 88% | 31,633 psi | 50% | 2310 fps | 95.6% |
| Norma 203B | <<locked>> | 80% | 50,589 psi | 79% | 2644 fps | 100% |
| Norma 203B | <<locked>> | 80% | 50,937 psi | 80% | 2651 fps | 100% |
| Norma 204 | <<locked>> | 82% | 40,263 psi | 63% | 2500 fps | 95.5% |
| Norma 204 | <<locked>> | 82% | 40,524 psi | 64% | 2507 fps | 95.6% |
| Norma MRP | 75.7 gr | 84% | 34,040 psi | 53% | 2448 fps | 95.1% |
| Norma MRP | 75.7 gr | 84% | 34,272 psi | 54% | 2457 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 38,290 psi | 60% | 2470 fps | 99% |
| Norma URP | <<locked>> | 80% | 38,450 psi | 60% | 2474 fps | 99% |
| Ramshot Big Game | <<locked>> | 80% | 51,285 psi | 80% | 2667 fps | 100% |
| Ramshot Big Game | <<locked>> | 80% | 51,619 psi | 81% | 2671 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 44,454 psi | 70% | 2648 fps | 96% |
| Ramshot Grand | <<locked>> | 92% | 41,539 psi | 65% | 2592 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 37,217 psi | 58% | 2457 fps | 97.4% |
| Ramshot Hunter | <<locked>> | 80% | 37,333 psi | 59% | 2461 fps | 97.4% |
| Ramshot Magnum | <<locked>> | 92% | 36,535 psi | 57% | 2467 fps | 95.4% |
| Ramshot Magnum | <<locked>> | 92% | 36,927 psi | 58% | 2474 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,644 psi | 43% | 1558 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,630 psi | 43% | 1558 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,776 psi | 76% | 2602 fps | 99.3% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,095 psi | 77% | 2608 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,542 psi | 71% | 2648 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,876 psi | 72% | 2654 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,334 psi | 60% | 2490 fps | 98.9% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,609 psi | 61% | 2497 fps | 98.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,173 psi | 58% | 2500 fps | 98.5% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,434 psi | 59% | 2507 fps | 98.6% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 33,982 psi | 53% | 2474 fps | 95% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 34,142 psi | 54% | 2477 fps | 95.1% |
| Rottweil R 902 | <<locked>> | 80% | 51,866 psi | 81% | 2605 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 51,996 psi | 81% | 2612 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,513 psi | 71% | 2552 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,643 psi | 72% | 2556 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 44,266 psi | 69% | 2546 fps | 95.6% |
| Rottweil R 904 | <<locked>> | 88% | 44,541 psi | 70% | 2552 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 86% | 38,740 psi | 61% | 2490 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 86% | 39,001 psi | 61% | 2497 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 42,453 psi | 67% | 2490 fps | 97.3% |
| Rottweil R 907 | <<locked>> | 80% | 42,569 psi | 67% | 2493 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,220 psi | 65% | 2467 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,495 psi | 65% | 2474 fps | 98.7% |
| Shooters World Precision | <<locked>> | 80% | 50,140 psi | 79% | 2598 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 50,270 psi | 79% | 2602 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,537 psi | 62% | 2454 fps | 97.4% |
| Shooters World SW4350 | <<locked>> | 80% | 39,668 psi | 62% | 2457 fps | 97.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,978 psi | 74% | 2608 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,079 psi | 74% | 2612 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,746 psi | 73% | 2461 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,876 psi | 73% | 2464 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,408 psi | 63% | 2418 fps | 97.4% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,553 psi | 64% | 2421 fps | 97.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 38,377 psi | 60% | 2484 fps | 95.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 38,653 psi | 61% | 2490 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 45,672 psi | 72% | 2552 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 46,006 psi | 72% | 2559 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 45,339 psi | 71% | 2536 fps | 95% |
| Somchem S361 | <<locked>> | 88% | 45,745 psi | 72% | 2543 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 34,809 psi | 55% | 2428 fps | 100% |
| Somchem S365 | <<locked>> | 80% | 34,940 psi | 55% | 2431 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 36,840 psi | 58% | 2421 fps | 95.7% |
| Somchem S385 | <<locked>> | 84% | 36,956 psi | 58% | 2425 fps | 95.8% |
| Vihtavuori N135 | <<locked>> | 80% | 52,272 psi | 82% | 2569 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 52,417 psi | 82% | 2572 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 52,533 psi | 82% | 2582 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 52,663 psi | 83% | 2585 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,743 psi | 69% | 2484 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,903 psi | 69% | 2487 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,682 psi | 62% | 2467 fps | 99.2% |
| Vihtavuori N160 | <<locked>> | 80% | 39,958 psi | 63% | 2474 fps | 99.2% |
| Vihtavuori N165 | <<locked>> | 88% | 36,303 psi | 57% | 2402 fps | 95.1% |
| Vihtavuori N165 | <<locked>> | 88% | 36,550 psi | 57% | 2408 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 50,676 psi | 79% | 2579 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 50,966 psi | 80% | 2582 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,088 psi | 61% | 2467 fps | 98.9% |
| Vihtavuori N550 | <<locked>> | 80% | 39,378 psi | 62% | 2477 fps | 99% |
| Vihtavuori N555 | <<locked>> | 80% | 30,211 psi | 47% | 2323 fps | 97.4% |
| Vihtavuori N555 | <<locked>> | 80% | 30,371 psi | 48% | 2329 fps | 97.5% |
| Vihtavuori N560 | 82.9 gr | 92% | 45,759 psi | 72% | 2674 fps | 95.6% |
| Vihtavuori N560 | 82.9 gr | 92% | 45,992 psi | 72% | 2680 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 98% | 44,817 psi | 70% | 2648 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 98% | 45,063 psi | 71% | 2651 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,957 psi | 61% | 2441 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,030 psi | 61% | 2441 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 40,698 psi | 64% | 2523 fps | 97.5% |
| Winchester 760 | <<locked>> | 80% | 40,973 psi | 64% | 2530 fps | 97.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,018 psi | 38% | 2224 fps | 96.2% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,105 psi | 38% | 2228 fps | 96.4% |
| Winchester Supreme 780 | <<locked>> | 88% | 38,725 psi | 61% | 2457 fps | 95.2% |
| Winchester Supreme 780 | <<locked>> | 88% | 38,972 psi | 61% | 2464 fps | 95.3% |
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 185 powders for .338 Rem. Ultra Mag. loaded with the .338 | 225gr | Peregrine VLR-4. Norma MRP delivers the highest muzzle velocity at 2,864 fps; across all powders the maximum-charge window runs from 1,699 fps to 2,864 fps. Accurate 3100 gives the best case fill at 100 %, and 185 of the 185 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 225.0 gr projectile in 0.338" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 3100, ADI AR 2213 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. Alliant Reloder-26, Norma MRP, Vihtavuori N560 rank at the top here: for .338 Rem. Ultra Mag. with the .338 | 225gr | Peregrine VLR-4 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.