Load Specifications
Load data in caliber .338 Win Mag. with .338 | 220gr | Peregrine Bushmaster (VRG-3) bullet and 100 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 60 and Alliant Power Pro 2000-MR.
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.
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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>> | 84% | 53,243 psi | 85% | 2559 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 55,143 psi | 88% | 2631 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 54,795 psi | 88% | 2625 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 53,374 psi | 86% | 2644 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 54,781 psi | 88% | 2635 fps | 97.2% |
| Accurate 4064 | <<locked>> | 92% | 54,708 psi | 88% | 2667 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 54,911 psi | 88% | 2756 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 88% | 56,043 psi | 90% | 2707 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 53,737 psi | 86% | 2661 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 86% | 55,071 psi | 88% | 2661 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 55,840 psi | 90% | 2631 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 55,651 psi | 89% | 2822 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 53,447 psi | 86% | 2680 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 56,362 psi | 90% | 2605 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 53,882 psi | 86% | 2697 fps | 99.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 52,939 psi | 85% | 2759 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 96% | 53,925 psi | 86% | 2792 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,434 psi | 60% | 2503 fps | 98.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 41,626 psi | 67% | 2651 fps | 97.7% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 55,796 psi | 89% | 2723 fps | 99.8% |
| Bofors RP3 | <<locked>> | 92% | 53,766 psi | 86% | 2694 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 54,070 psi | 87% | 2664 fps | 97.3% |
| Hodgdon Benchmark | <<locked>> | 84% | 53,592 psi | 86% | 2598 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 54,128 psi | 87% | 2687 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 56,420 psi | 90% | 2785 fps | 100% |
| Hodgdon H322 | <<locked>> | 82% | 55,709 psi | 89% | 2648 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 54,984 psi | 88% | 2707 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 98% | 54,230 psi | 87% | 2753 fps | 98% |
| Hodgdon H4350 | <<locked>> | 96% | 55,158 psi | 88% | 2717 fps | 96.9% |
| Hodgdon H4895 | <<locked>> | 86% | 53,084 psi | 85% | 2667 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 48,921 psi | 78% | 2638 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 56,028 psi | 90% | 2749 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 55,317 psi | 89% | 2792 fps | 97.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,259 psi | 57% | 1617 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 54,491 psi | 87% | 2671 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 56,391 psi | 90% | 2694 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 53,026 psi | 85% | 2641 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 88% | 53,316 psi | 85% | 2625 fps | 97.7% |
| IMR 4350ᴾ | <<locked>> | 100% | 54,346 psi | 87% | 2690 fps | 97.4% |
| IMR 4451 Enduron | <<locked>> | 96% | 56,115 psi | 90% | 2694 fps | 98.1% |
| IMR 4831ᴾ | <<locked>> | 100% | 51,808 psi | 83% | 2697 fps | 99.5% |
| IMR 4895 | <<locked>> | 90% | 55,259 psi | 89% | 2726 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 55,071 psi | 88% | 2661 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 54,897 psi | 88% | 2641 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 55,535 psi | 89% | 2680 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 55,579 psi | 89% | 2638 fps | 100% |
| Lovex S062 | <<locked>> | 92% | 56,086 psi | 90% | 2684 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 55,143 psi | 88% | 2684 fps | 99% |
| Lovex S070ᴾ | <<locked>> | 100% | 56,043 psi | 90% | 2720 fps | 98.4% |
| Norma 201 | <<locked>> | 88% | 54,607 psi | 88% | 2654 fps | 100% |
| Norma 202 | <<locked>> | 88% | 55,216 psi | 89% | 2654 fps | 100% |
| Norma 203B | <<locked>> | 90% | 53,055 psi | 85% | 2684 fps | 99.9% |
| Norma 204ᴾ | <<locked>> | 100% | 55,056 psi | 88% | 2736 fps | 96.2% |
| Norma URPᴾ | <<locked>> | 100% | 53,925 psi | 86% | 2743 fps | 99.6% |
| Ramshot Big Game | <<locked>> | 90% | 53,592 psi | 86% | 2710 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 52,866 psi | 85% | 2740 fps | 98.5% |
| Ramshot TAC | <<locked>> | 86% | 55,390 psi | 89% | 2680 fps | 99.1% |
| Ramshot Wild Boar | <<locked>> | 86% | 54,882 psi | 88% | 2697 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 84% | 55,999 psi | 90% | 2664 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,578 psi | 57% | 1654 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 54,578 psi | 88% | 2641 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 55,288 psi | 89% | 2690 fps | 98.5% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 54,346 psi | 87% | 2762 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 53,838 psi | 86% | 2795 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 54,447 psi | 87% | 2776 fps | 99.6% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 54,505 psi | 87% | 2805 fps | 99.5% |
| Rottweil R 901 | <<locked>> | 86% | 55,434 psi | 89% | 2631 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 54,897 psi | 88% | 2651 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 53,635 psi | 86% | 2684 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 54,070 psi | 87% | 2664 fps | 97.3% |
| Shooters World Long Rifle | <<locked>> | 98% | 55,143 psi | 88% | 2684 fps | 99% |
| Shooters World Match Rifle | <<locked>> | 88% | 55,535 psi | 89% | 2680 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 56,086 psi | 90% | 2684 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 56,043 psi | 90% | 2720 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 55,680 psi | 89% | 2746 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 53,650 psi | 86% | 2657 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 54,346 psi | 87% | 2680 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 56,376 psi | 90% | 2595 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 53,142 psi | 85% | 2552 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 55,608 psi | 89% | 2641 fps | 98% |
| Somchem S321 | <<locked>> | 84% | 56,289 psi | 90% | 2694 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 55,622 psi | 89% | 2595 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 53,359 psi | 86% | 2651 fps | 99.9% |
| Somchem S355 | <<locked>> | 94% | 54,085 psi | 87% | 2684 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 48,327 psi | 77% | 2694 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 56,086 psi | 90% | 2556 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 53,258 psi | 85% | 2536 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 54,766 psi | 88% | 2615 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 55,854 psi | 90% | 2635 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 55,521 psi | 89% | 2661 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 53,098 psi | 85% | 2690 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 86% | 55,477 psi | 89% | 2657 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 53,896 psi | 86% | 2635 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 55,463 psi | 89% | 2743 fps | 99.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 40,611 psi | 65% | 2572 fps | 98.4% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 53,577 psi | 86% | 2674 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 55,303 psi | 89% | 2703 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 54,491 psi | 87% | 2756 fps | 98.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,330 psi | 53% | 2497 fps | 98.1% |
| Winchester StaBALL Match | <<locked>> | 88% | 54,114 psi | 87% | 2687 fps | 100% |
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% | 46,978 psi | 75% | 2474 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 51,358 psi | 82% | 2582 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 39,204 psi | 63% | 2398 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 46,659 psi | 75% | 2546 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 48,080 psi | 77% | 2530 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 37,144 psi | 60% | 2392 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 33,388 psi | 54% | 2375 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 43,366 psi | 70% | 2507 fps | 99.1% |
| ADI AR 2208 | <<locked>> | 80% | 36,869 psi | 59% | 2365 fps | 97.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 45,527 psi | 73% | 2516 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 80% | 45,629 psi | 73% | 2500 fps | 100% |
| Alliant Power Pro 2000-MR | 58.2 gr | 80% | 39,407 psi | 63% | 2536 fps | 97.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,318 psi | 58% | 2385 fps | 98.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 52,997 psi | 85% | 2562 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,088 psi | 63% | 2444 fps | 98% |
| Alliant Reloder-16 | <<locked>> | 86% | 34,142 psi | 55% | 2395 fps | 95.8% |
| Alliant Reloder-17 | 57.3 gr | 80% | 31,270 psi | 50% | 2349 fps | 96.5% |
| Alliant Reloder-23 | <<locked>> | 92% | 29,080 psi | 47% | 2293 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 96% | 36,013 psi | 58% | 2523 fps | 95.7% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 42,670 psi | 68% | 2513 fps | 98.3% |
| Bofors RP3 | <<locked>> | 80% | 35,752 psi | 57% | 2385 fps | 98.5% |
| Bofors RP7 | <<locked>> | 90% | 44,773 psi | 72% | 2513 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 47,369 psi | 76% | 2507 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 44,222 psi | 71% | 2536 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 48,834 psi | 78% | 2674 fps | 99.5% |
| Hodgdon H322 | <<locked>> | 80% | 52,098 psi | 84% | 2602 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 36,724 psi | 59% | 2388 fps | 96% |
| Hodgdon H414 | <<locked>> | 90% | 41,452 psi | 66% | 2536 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 92% | 48,675 psi | 78% | 2615 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 43,772 psi | 70% | 2516 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 29,225 psi | 47% | 2244 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,682 psi | 64% | 2490 fps | 99.3% |
| Hodgdon Superformance | <<locked>> | 92% | 44,382 psi | 71% | 2608 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,194 psi | 42% | 1444 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,047 psi | 67% | 2474 fps | 99.2% |
| IMR 3031 | <<locked>> | 80% | 43,482 psi | 70% | 2513 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,711 psi | 62% | 2398 fps | 97.9% |
| IMR 4166 Enduron | <<locked>> | 82% | 43,932 psi | 70% | 2467 fps | 95.6% |
| IMR 4350 | <<locked>> | 94% | 44,918 psi | 72% | 2536 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 88% | 43,787 psi | 70% | 2493 fps | 95.5% |
| IMR 4831 | <<locked>> | 86% | 32,460 psi | 52% | 2336 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 40,030 psi | 64% | 2474 fps | 98.7% |
| IMR 8208 XBR | <<locked>> | 80% | 45,527 psi | 73% | 2516 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 80% | 51,372 psi | 82% | 2595 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 42,322 psi | 68% | 2487 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 43,540 psi | 70% | 2448 fps | 99.2% |
| Lovex S062 | <<locked>> | 80% | 38,450 psi | 62% | 2398 fps | 99.2% |
| Lovex S065 | <<locked>> | 86% | 37,985 psi | 61% | 2392 fps | 95.5% |
| Lovex S070 | <<locked>> | 90% | 40,915 psi | 66% | 2467 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 42,322 psi | 68% | 2461 fps | 99.7% |
| Norma 202 | <<locked>> | 80% | 42,714 psi | 68% | 2470 fps | 100% |
| Norma 203B | <<locked>> | 80% | 38,435 psi | 62% | 2434 fps | 98.3% |
| Norma 204 | <<locked>> | 98% | 51,430 psi | 82% | 2680 fps | 95.4% |
| Norma URP | <<locked>> | 86% | 34,069 psi | 55% | 2382 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 38,043 psi | 61% | 2448 fps | 98.1% |
| Ramshot Hunter | <<locked>> | 92% | 40,495 psi | 65% | 2523 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 45,426 psi | 73% | 2523 fps | 97.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 44,759 psi | 72% | 2539 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 49,168 psi | 79% | 2562 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,556 psi | 43% | 1480 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 51,140 psi | 82% | 2592 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 39,769 psi | 64% | 2428 fps | 95.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 41,075 psi | 66% | 2543 fps | 98.4% |
| ReloadSwiss RS 60 | 57.3 gr | 80% | 33,388 psi | 54% | 2418 fps | 99.3% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 33,330 psi | 53% | 2392 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 36,114 psi | 58% | 2457 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 46,195 psi | 74% | 2500 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 40,176 psi | 64% | 2415 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 80% | 33,576 psi | 54% | 2333 fps | 97.7% |
| Rottweil R 907 | <<locked>> | 90% | 44,773 psi | 72% | 2513 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 86% | 37,985 psi | 61% | 2392 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 42,322 psi | 68% | 2487 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 38,450 psi | 62% | 2398 fps | 99.2% |
| Shooters World SW4350 | <<locked>> | 90% | 40,915 psi | 66% | 2467 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,766 psi | 56% | 2382 fps | 97.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 43,555 psi | 70% | 2497 fps | 97.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 41,945 psi | 67% | 2480 fps | 98.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,859 psi | 70% | 2418 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,347 psi | 58% | 2293 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 42,786 psi | 69% | 2444 fps | 95.4% |
| Somchem S321 | <<locked>> | 80% | 49,226 psi | 79% | 2592 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 43,381 psi | 70% | 2418 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 43,424 psi | 70% | 2497 fps | 99.1% |
| Somchem S355 | <<locked>> | 80% | 34,519 psi | 55% | 2339 fps | 97.7% |
| Somchem S365 | <<locked>> | 82% | 26,571 psi | 43% | 2228 fps | 96% |
| Vihtavuori N130 | <<locked>> | 80% | 49,617 psi | 80% | 2474 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 44,237 psi | 71% | 2411 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 39,711 psi | 64% | 2398 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,437 psi | 65% | 2408 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,822 psi | 53% | 2280 fps | 98.5% |
| Vihtavuori N160 | <<locked>> | 84% | 33,272 psi | 53% | 2333 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 45,585 psi | 73% | 2513 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 38,885 psi | 62% | 2398 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 34,983 psi | 56% | 2385 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 92% | 31,169 psi | 50% | 2365 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,196 psi | 47% | 2211 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 45,252 psi | 73% | 2556 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 41,655 psi | 67% | 2539 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 96% | 29,240 psi | 47% | 2369 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 41,365 psi | 66% | 2484 fps | 99.2% |
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 100 powders for .338 Win Mag. loaded with the .338 | 220gr | Peregrine Bushmaster (VRG-3). Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,822 fps; across all powders the maximum-charge window runs from 1,617 fps to 2,822 fps. Accurate 4350 gives the best case fill at 100 %, and 100 of the 100 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 220.0 gr projectile in 0.338" calls for a 1:14.5 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, 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. Alliant Reloder-17, ReloadSwiss RS 60, Alliant Power Pro 2000-MR rank at the top here: for .338 Win Mag. with the .338 | 220gr | Peregrine Bushmaster (VRG-3) 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.