Load Specifications
Bullet:.338 | 225gr | Barnes MRX BT
Bullet Manufacturer:Barnes
Bullet Weight:225 gr
Bullet Diameter:0.338"
Bullet Length:<<locked>>
Caliber:.33 Nosler load data
Case Length (l3):2.46"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:96 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:65,000 psi
Recommended Twist Rate:1:13.5
Load data in caliber .33 Nosler with .338 | 225gr | Barnes MRX BT bullet and 111 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon Superformance and Alliant Reloder-17.
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 2015 | <<locked>> | 82% | 56,260 psi | 87% | 2612 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 55,158 psi | 85% | 2638 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 57,014 psi | 88% | 2703 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 57,827 psi | 89% | 2710 fps | 98.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,122 psi | 71% | 2625 fps | 98.4% |
| Accurate 4064 | <<locked>> | 88% | 55,434 psi | 85% | 2687 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 56,115 psi | 86% | 2792 fps | 100% |
| Accurate High Countryᴾ | <<locked>> | 100% | 50,589 psi | 78% | 2808 fps | 96% |
| ADI AR 2206H | <<locked>> | 84% | 55,477 psi | 85% | 2723 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 56,768 psi | 87% | 2726 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 53,969 psi | 83% | 2776 fps | 97.5% |
| ADI Benchmark 8208 | <<locked>> | 84% | 57,914 psi | 89% | 2717 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 55,956 psi | 86% | 2641 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 55,680 psi | 86% | 2848 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 53,737 psi | 83% | 2772 fps | 97.5% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 53,737 psi | 83% | 2772 fps | 97.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 57,130 psi | 88% | 2746 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 57,566 psi | 89% | 2769 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 57,232 psi | 88% | 2848 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 54,839 psi | 84% | 2825 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 52,939 psi | 81% | 2762 fps | 97.4% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 46,557 psi | 72% | 2703 fps | 96.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,787 psi | 67% | 2651 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,305 psi | 59% | 2559 fps | 97.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,501 psi | 76% | 2825 fps | 99.8% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 55,550 psi | 85% | 2743 fps | 100% |
| Bofors RP3 | <<locked>> | 90% | 57,943 psi | 89% | 2766 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 46,557 psi | 72% | 2703 fps | 96.2% |
| Bofors RP7 | <<locked>> | 94% | 57,435 psi | 88% | 2743 fps | 98.8% |
| Hodgdon Benchmark | <<locked>> | 82% | 55,985 psi | 86% | 2654 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 57,711 psi | 89% | 2753 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 58,653 psi | 90% | 2782 fps | 100% |
| Hodgdon H414 | <<locked>> | 94% | 55,042 psi | 85% | 2789 fps | 99% |
| Hodgdon H4350 | <<locked>> | 92% | 55,448 psi | 85% | 2753 fps | 98.1% |
| Hodgdon H4895 | <<locked>> | 84% | 56,115 psi | 86% | 2730 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 57,130 psi | 88% | 2766 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 56,188 psi | 86% | 2769 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 55,347 psi | 85% | 2828 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,897 psi | 55% | 1657 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 57,334 psi | 88% | 2733 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 56,681 psi | 87% | 2710 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 56,173 psi | 86% | 2710 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 55,782 psi | 86% | 2697 fps | 99% |
| IMR 4350 | <<locked>> | 98% | 58,218 psi | 90% | 2776 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 92% | 55,941 psi | 86% | 2726 fps | 99% |
| IMR 4831 | <<locked>> | 98% | 56,478 psi | 87% | 2779 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 55,492 psi | 85% | 2749 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 57,914 psi | 89% | 2717 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 55,622 psi | 86% | 2697 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 58,305 psi | 90% | 2700 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 56,188 psi | 86% | 2703 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 55,448 psi | 85% | 2717 fps | 99.6% |
| Lovex S070 | <<locked>> | 96% | 56,550 psi | 87% | 2756 fps | 99.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,189 psi | 59% | 2480 fps | 96.5% |
| Norma 201 | <<locked>> | 86% | 57,580 psi | 89% | 2713 fps | 100% |
| Norma 202 | <<locked>> | 86% | 58,508 psi | 90% | 2710 fps | 100% |
| Norma 203B | <<locked>> | 88% | 56,797 psi | 87% | 2756 fps | 100% |
| Norma 204 | <<locked>> | 96% | 55,434 psi | 85% | 2776 fps | 97.6% |
| Norma MRPᴾ | <<locked>> | 100% | 49,023 psi | 75% | 2782 fps | 98.2% |
| Norma URP | <<locked>> | 98% | 58,740 psi | 90% | 2828 fps | 100% |
| Ramshot Big Game | <<locked>> | 88% | 57,754 psi | 89% | 2785 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 57,377 psi | 88% | 2831 fps | 99.7% |
| Ramshot TAC | <<locked>> | 84% | 58,131 psi | 89% | 2749 fps | 99.9% |
| Ramshot Wild Boar | <<locked>> | 84% | 58,146 psi | 89% | 2762 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 58,624 psi | 90% | 2723 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,434 psi | 56% | 1699 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 55,129 psi | 85% | 2717 fps | 99.3% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 58,668 psi | 90% | 2838 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 58,479 psi | 90% | 2871 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 55,999 psi | 86% | 2815 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 55,071 psi | 85% | 2844 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 84% | 58,233 psi | 90% | 2687 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 58,291 psi | 90% | 2713 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 57,827 psi | 89% | 2756 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 55,985 psi | 86% | 2749 fps | 96.7% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 52,069 psi | 80% | 2749 fps | 97.4% |
| Rottweil R 907 | <<locked>> | 94% | 57,435 psi | 88% | 2743 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 94% | 55,448 psi | 85% | 2717 fps | 99.6% |
| Shooters World Match Rifle | <<locked>> | 84% | 55,622 psi | 86% | 2697 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 56,188 psi | 86% | 2703 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 56,550 psi | 87% | 2756 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 55,869 psi | 86% | 2766 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 56,855 psi | 87% | 2730 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 57,638 psi | 89% | 2746 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 55,622 psi | 86% | 2605 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 56,144 psi | 86% | 2605 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 55,448 psi | 85% | 2674 fps | 98.9% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 51,576 psi | 79% | 2743 fps | 97.3% |
| Somchem S335 | <<locked>> | 86% | 58,305 psi | 90% | 2644 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 56,536 psi | 87% | 2717 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 57,798 psi | 89% | 2753 fps | 100% |
| Somchem S361ᴾ | <<locked>> | 100% | 57,870 psi | 89% | 2746 fps | 96.2% |
| Somchem S365ᴾ | <<locked>> | 100% | 57,261 psi | 88% | 2825 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,649 psi | 81% | 2726 fps | 98.2% |
| Vihtavuori N130 | <<locked>> | 82% | 58,523 psi | 90% | 2602 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 56,057 psi | 86% | 2589 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 58,363 psi | 90% | 2671 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 55,419 psi | 85% | 2644 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 55,825 psi | 86% | 2684 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 57,537 psi | 89% | 2776 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 45,194 psi | 70% | 2592 fps | 96.3% |
| Vihtavuori N530 | <<locked>> | 84% | 58,479 psi | 90% | 2720 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 57,058 psi | 88% | 2690 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 56,449 psi | 87% | 2779 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,631 psi | 75% | 2723 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 57,363 psi | 88% | 2746 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 55,158 psi | 85% | 2717 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 55,303 psi | 85% | 2792 fps | 99.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,117 psi | 60% | 2680 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 86% | 57,696 psi | 89% | 2753 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 49,371 psi | 76% | 2667 fps | 96.5% |
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 2015 | <<locked>> | 80% | 52,765 psi | 81% | 2569 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 45,368 psi | 70% | 2503 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 53,243 psi | 82% | 2657 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,266 psi | 68% | 2497 fps | 96.2% |
| Accurate 3100 | <<locked>> | 92% | 34,853 psi | 54% | 2408 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 43,004 psi | 66% | 2507 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 31,952 psi | 49% | 2352 fps | 96.2% |
| Accurate High Country | <<locked>> | 98% | 47,268 psi | 73% | 2753 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 48,979 psi | 75% | 2625 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 41,582 psi | 64% | 2484 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 94% | 44,425 psi | 68% | 2612 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,111 psi | 79% | 2625 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 52,301 psi | 80% | 2595 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,165 psi | 69% | 2674 fps | 99.7% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 44,338 psi | 68% | 2612 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 44,338 psi | 68% | 2612 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,524 psi | 64% | 2503 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,512 psi | 68% | 2566 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,140 psi | 49% | 2369 fps | 96.4% |
| Alliant Reloder-17 | 64 gr | 80% | 36,056 psi | 55% | 2490 fps | 99.1% |
| Alliant Reloder-19 | <<locked>> | 94% | 43,772 psi | 67% | 2602 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 98% | 43,468 psi | 67% | 2644 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 84% | 26,179 psi | 40% | 2231 fps | 95.1% |
| Alliant Reloder-25 | <<locked>> | 96% | 33,779 psi | 52% | 2448 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 88% | 32,053 psi | 49% | 2451 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,472 psi | 75% | 2635 fps | 99.7% |
| Bofors RP3 | <<locked>> | 80% | 41,191 psi | 63% | 2507 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 43,468 psi | 67% | 2644 fps | 95.3% |
| Bofors RP7 | <<locked>> | 82% | 39,421 psi | 61% | 2438 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,663 psi | 81% | 2608 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,502 psi | 78% | 2651 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,003 psi | 65% | 2516 fps | 98.5% |
| Hodgdon H414 | <<locked>> | 84% | 39,320 psi | 60% | 2516 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 84% | 42,743 psi | 66% | 2536 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 49,472 psi | 76% | 2635 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,530 psi | 45% | 2274 fps | 97.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,788 psi | 70% | 2615 fps | 100% |
| Hodgdon Superformance | 72.7 gr | 86% | 41,452 psi | 64% | 2585 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,614 psi | 41% | 1476 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,442 psi | 73% | 2585 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 49,617 psi | 76% | 2615 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,714 psi | 67% | 2513 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,151 psi | 71% | 2539 fps | 97.5% |
| IMR 4350 | <<locked>> | 86% | 39,813 psi | 61% | 2467 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 38,522 psi | 59% | 2418 fps | 95.3% |
| IMR 4831 | <<locked>> | 80% | 31,067 psi | 48% | 2316 fps | 95.9% |
| IMR 4895 | <<locked>> | 80% | 45,643 psi | 70% | 2595 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 80% | 51,111 psi | 79% | 2625 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 48,443 psi | 75% | 2598 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,428 psi | 75% | 2556 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 43,598 psi | 67% | 2513 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 35,853 psi | 55% | 2369 fps | 96% |
| Lovex S070 | <<locked>> | 84% | 38,566 psi | 59% | 2444 fps | 95.7% |
| Lovex S071 | <<locked>> | 98% | 35,665 psi | 55% | 2428 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 47,819 psi | 74% | 2572 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,370 psi | 74% | 2572 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,888 psi | 68% | 2556 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 44,991 psi | 69% | 2605 fps | 95.3% |
| Norma MRP | <<locked>> | 94% | 39,972 psi | 61% | 2605 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 32,271 psi | 50% | 2356 fps | 96.1% |
| Ramshot Big Game | <<locked>> | 80% | 43,874 psi | 67% | 2575 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 84% | 35,926 psi | 55% | 2451 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 51,126 psi | 79% | 2644 fps | 99.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,952 psi | 78% | 2661 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 80% | 54,984 psi | 85% | 2674 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,006 psi | 42% | 1512 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,235 psi | 65% | 2500 fps | 97.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,674 psi | 73% | 2674 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,450 psi | 59% | 2549 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 31,749 psi | 49% | 2369 fps | 95.7% |
| ReloadSwiss RS 70 | 66.6 gr | 82% | 33,823 psi | 52% | 2431 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 51,605 psi | 79% | 2595 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,426 psi | 70% | 2526 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 38,783 psi | 60% | 2457 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 96% | 48,965 psi | 75% | 2641 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 94% | 42,409 psi | 65% | 2582 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 82% | 39,421 psi | 61% | 2438 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,853 psi | 55% | 2369 fps | 96% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,443 psi | 75% | 2598 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,598 psi | 67% | 2513 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 38,566 psi | 59% | 2444 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,089 psi | 62% | 2510 fps | 99.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,443 psi | 76% | 2618 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,500 psi | 73% | 2595 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,052 psi | 75% | 2516 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,089 psi | 63% | 2392 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 37,318 psi | 57% | 2362 fps | 95.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 44,875 psi | 69% | 2631 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 48,660 psi | 75% | 2516 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,284 psi | 76% | 2612 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 39,566 psi | 61% | 2461 fps | 99.5% |
| Somchem S361 | <<locked>> | 98% | 54,114 psi | 83% | 2690 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 28,950 psi | 45% | 2313 fps | 98.3% |
| Somchem S385 | <<locked>> | 92% | 40,263 psi | 62% | 2513 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 55,187 psi | 85% | 2562 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 49,574 psi | 76% | 2503 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,455 psi | 70% | 2500 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,803 psi | 70% | 2510 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,623 psi | 58% | 2395 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 33,721 psi | 52% | 2359 fps | 96.6% |
| Vihtavuori N165 | <<locked>> | 98% | 42,337 psi | 65% | 2539 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 51,242 psi | 79% | 2618 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,121 psi | 68% | 2503 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,127 psi | 51% | 2359 fps | 96.2% |
| Vihtavuori N555 | <<locked>> | 84% | 28,340 psi | 44% | 2303 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,170 psi | 51% | 2336 fps | 98.5% |
| Winchester 748 | <<locked>> | 80% | 51,532 psi | 79% | 2667 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 39,494 psi | 61% | 2516 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 88% | 26,223 psi | 40% | 2306 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,152 psi | 73% | 2602 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 45,948 psi | 71% | 2608 fps | 95.7% |
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 111 powders for .33 Nosler loaded with the .338 | 225gr | Barnes MRX BT. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,871 fps; across all powders the maximum-charge window runs from 1,657 fps to 2,871 fps. Accurate 3100 gives the best case fill at 100 %, and 111 of the 111 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 225.0 gr projectile in 0.338" calls for a 1:13.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, ADI AR 2209 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. ReloadSwiss RS 70, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .33 Nosler with the .338 | 225gr | Barnes MRX BT 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.