Load Specifications
Bullet:.338 | 200gr | Barnes Solid
Bullet Manufacturer:Barnes
Bullet Weight:200 gr
Bullet Diameter:0.338"
Bullet Length:<<locked>>
Caliber:.338 Win Mag. load data
Case Length (l3):2.5"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:86 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:62,366 psi
Recommended Twist Rate:1:13.0
Load data in caliber .338 Win Mag. with .338 | 200gr | Barnes Solid bullet and 98 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, ReloadSwiss RS 60 and ReloadSwiss RS 52.
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>> | 88% | 55,883 psi | 90% | 2707 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 54,433 psi | 87% | 2733 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 53,708 psi | 86% | 2723 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 56,391 psi | 90% | 2795 fps | 100% |
| Accurate 4064 | <<locked>> | 94% | 53,563 psi | 86% | 2766 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 49,008 psi | 79% | 2772 fps | 98.3% |
| Accurate LT-30 | <<locked>> | 82% | 55,303 psi | 89% | 2651 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 55,709 psi | 89% | 2677 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 55,013 psi | 88% | 2799 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 96% | 55,840 psi | 90% | 2792 fps | 99.4% |
| ADI AR 2219 | <<locked>> | 82% | 56,333 psi | 90% | 2772 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 88% | 54,259 psi | 87% | 2756 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 54,375 psi | 87% | 2736 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 55,840 psi | 90% | 2858 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 54,375 psi | 87% | 2907 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 55,317 psi | 89% | 2815 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 84% | 55,825 psi | 90% | 2713 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 56,376 psi | 90% | 2838 fps | 99.6% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 48,327 psi | 77% | 2776 fps | 98.3% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 56,130 psi | 90% | 2930 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 54,360 psi | 87% | 2648 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 54,607 psi | 88% | 2808 fps | 99.1% |
| Bofors RP3 | <<locked>> | 96% | 56,014 psi | 90% | 2831 fps | 100% |
| Hodgdon Benchmark | <<locked>> | 88% | 56,304 psi | 90% | 2740 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 53,185 psi | 85% | 2782 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 54,998 psi | 88% | 2874 fps | 99.5% |
| Hodgdon H322 | <<locked>> | 84% | 54,969 psi | 88% | 2753 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 55,912 psi | 90% | 2779 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 53,693 psi | 86% | 2789 fps | 98.5% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 52,620 psi | 84% | 2825 fps | 96.4% |
| Hodgdon H4895 | <<locked>> | 90% | 55,492 psi | 89% | 2808 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,483 psi | 71% | 2664 fps | 98.8% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 54,215 psi | 87% | 2835 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,896 psi | 56% | 1673 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 53,432 psi | 86% | 2762 fps | 99.7% |
| IMR 3031 | <<locked>> | 90% | 54,955 psi | 88% | 2795 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 55,361 psi | 89% | 2776 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 92% | 55,985 psi | 90% | 2756 fps | 96.8% |
| IMR 4198 | <<locked>> | 84% | 56,043 psi | 90% | 2671 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 55,042 psi | 88% | 2772 fps | 96.5% |
| IMR 4831ᴾ | <<locked>> | 100% | 46,731 psi | 75% | 2717 fps | 97.9% |
| IMR 4895 | <<locked>> | 92% | 54,041 psi | 87% | 2815 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 88% | 54,259 psi | 87% | 2756 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 54,404 psi | 87% | 2743 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 54,244 psi | 87% | 2776 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 55,114 psi | 88% | 2730 fps | 99.7% |
| Lovex S062 | <<locked>> | 94% | 55,056 psi | 88% | 2776 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 54,041 psi | 87% | 2766 fps | 97.8% |
| Lovex S070ᴾ | <<locked>> | 100% | 51,314 psi | 82% | 2743 fps | 96.2% |
| Norma 201 | <<locked>> | 90% | 53,766 psi | 86% | 2746 fps | 100% |
| Norma 202 | <<locked>> | 90% | 54,085 psi | 87% | 2749 fps | 100% |
| Norma 203B | <<locked>> | 94% | 55,448 psi | 89% | 2825 fps | 99.7% |
| Norma URPᴾ | <<locked>> | 100% | 48,733 psi | 78% | 2766 fps | 98.1% |
| Ramshot Big Game | <<locked>> | 94% | 55,811 psi | 89% | 2848 fps | 99.7% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 48,008 psi | 77% | 2753 fps | 96.2% |
| Ramshot TAC | <<locked>> | 88% | 54,592 psi | 88% | 2766 fps | 98.1% |
| Ramshot Wild Boar | <<locked>> | 88% | 53,983 psi | 87% | 2789 fps | 99.6% |
| Ramshot X-Terminator | <<locked>> | 86% | 55,463 psi | 89% | 2756 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,201 psi | 56% | 1713 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 53,809 psi | 86% | 2736 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 54,433 psi | 87% | 2772 fps | 97.2% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 56,434 psi | 90% | 2900 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 55,956 psi | 90% | 2936 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 48,718 psi | 78% | 2792 fps | 97.9% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 49,705 psi | 80% | 2815 fps | 97.5% |
| Rottweil R 901 | <<locked>> | 88% | 54,940 psi | 88% | 2733 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 54,027 psi | 87% | 2743 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 55,564 psi | 89% | 2818 fps | 99.9% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 54,041 psi | 87% | 2766 fps | 97.8% |
| Shooters World Match Rifle | <<locked>> | 90% | 54,244 psi | 87% | 2776 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 55,056 psi | 88% | 2776 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 51,314 psi | 82% | 2743 fps | 96.2% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 53,708 psi | 86% | 2710 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 53,998 psi | 87% | 2831 fps | 99.6% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 53,490 psi | 86% | 2690 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 56,376 psi | 90% | 2795 fps | 98.7% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 53,490 psi | 86% | 2772 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 55,883 psi | 90% | 2694 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 55,390 psi | 89% | 2687 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 54,723 psi | 88% | 2720 fps | 96.5% |
| Somchem S321 | <<locked>> | 86% | 55,506 psi | 89% | 2789 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 54,853 psi | 88% | 2690 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 55,840 psi | 90% | 2789 fps | 99.7% |
| Somchem S355 | <<locked>> | 98% | 56,144 psi | 90% | 2815 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,511 psi | 70% | 2717 fps | 99.6% |
| Vihtavuori N130 | <<locked>> | 86% | 55,666 psi | 89% | 2664 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 55,869 psi | 90% | 2680 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 53,359 psi | 86% | 2713 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 54,752 psi | 88% | 2730 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 54,201 psi | 87% | 2749 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 51,285 psi | 82% | 2766 fps | 98.4% |
| Vihtavuori N530 | <<locked>> | 88% | 54,708 psi | 88% | 2753 fps | 100% |
| Vihtavuori N540 | <<locked>> | 94% | 56,246 psi | 90% | 2772 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 50,473 psi | 81% | 2769 fps | 98.2% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 52,475 psi | 84% | 2753 fps | 99.8% |
| Winchester 748 | <<locked>> | 88% | 54,157 psi | 87% | 2799 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 52,620 psi | 84% | 2825 fps | 96.4% |
| Winchester StaBALL Match | <<locked>> | 90% | 52,939 psi | 85% | 2776 fps | 99.8% |
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% | 43,816 psi | 70% | 2530 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 47,601 psi | 76% | 2631 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 36,260 psi | 58% | 2444 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 42,902 psi | 69% | 2589 fps | 99.8% |
| Accurate 4064 | <<locked>> | 80% | 34,272 psi | 55% | 2428 fps | 99.4% |
| Accurate 4350 | <<locked>> | 92% | 37,101 psi | 59% | 2549 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 80% | 51,982 psi | 83% | 2605 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 52,373 psi | 84% | 2628 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 40,248 psi | 65% | 2543 fps | 97.5% |
| ADI AR 2208 | <<locked>> | 82% | 36,434 psi | 58% | 2444 fps | 95.6% |
| ADI AR 2219 | <<locked>> | 80% | 52,634 psi | 84% | 2720 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,250 psi | 68% | 2552 fps | 98.9% |
| Alliant AR-Comp | <<locked>> | 80% | 41,756 psi | 67% | 2556 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 49,110 psi | 79% | 2749 fps | 99.5% |
| Alliant Power Pro 2000-MR | 57.9 gr | 82% | 38,899 psi | 62% | 2608 fps | 96% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,446 psi | 54% | 2411 fps | 96.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 49,443 psi | 79% | 2625 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,129 psi | 58% | 2470 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 92% | 37,797 psi | 61% | 2562 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 84% | 33,025 psi | 53% | 2474 fps | 95.4% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 51,082 psi | 82% | 2602 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,117 psi | 63% | 2536 fps | 96% |
| Bofors RP3 | <<locked>> | 80% | 32,895 psi | 53% | 2411 fps | 96.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,251 psi | 71% | 2549 fps | 99.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,466 psi | 65% | 2569 fps | 99.1% |
| Hodgdon CFE223 | <<locked>> | 80% | 44,541 psi | 71% | 2703 fps | 98% |
| Hodgdon H322 | <<locked>> | 80% | 48,124 psi | 77% | 2654 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 48,979 psi | 79% | 2677 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 38,609 psi | 62% | 2516 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 98% | 49,168 psi | 79% | 2766 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 40,567 psi | 65% | 2552 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 32,547 psi | 52% | 2408 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,289 psi | 58% | 2513 fps | 97.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,063 psi | 42% | 1499 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,972 psi | 62% | 2507 fps | 97.7% |
| IMR 3031 | <<locked>> | 80% | 39,697 psi | 64% | 2556 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 35,853 psi | 57% | 2425 fps | 95.7% |
| IMR 4166 Enduron | <<locked>> | 88% | 49,588 psi | 80% | 2654 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 49,806 psi | 80% | 2589 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 94% | 48,805 psi | 78% | 2671 fps | 95.2% |
| IMR 4831 | <<locked>> | 94% | 38,522 psi | 62% | 2562 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 36,941 psi | 59% | 2503 fps | 96.7% |
| IMR 8208 XBR | <<locked>> | 80% | 42,250 psi | 68% | 2552 fps | 98.9% |
| Lovex D073.5 | <<locked>> | 80% | 47,355 psi | 76% | 2638 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 38,827 psi | 62% | 2523 fps | 99.4% |
| Lovex S060 | <<locked>> | 80% | 40,683 psi | 65% | 2484 fps | 97.6% |
| Lovex S062 | <<locked>> | 80% | 35,592 psi | 57% | 2431 fps | 97.6% |
| Lovex S065 | <<locked>> | 92% | 42,322 psi | 68% | 2566 fps | 95.2% |
| Lovex S070 | <<locked>> | 98% | 48,225 psi | 77% | 2690 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 39,378 psi | 63% | 2497 fps | 98.5% |
| Norma 202 | <<locked>> | 80% | 39,494 psi | 63% | 2510 fps | 99.8% |
| Norma 203B | <<locked>> | 80% | 35,491 psi | 57% | 2461 fps | 96.2% |
| Norma URP | <<locked>> | 92% | 37,753 psi | 61% | 2552 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 34,824 psi | 56% | 2464 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 98% | 44,976 psi | 72% | 2697 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 42,076 psi | 67% | 2549 fps | 95.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,321 psi | 66% | 2572 fps | 97.7% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,774 psi | 73% | 2602 fps | 98.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,223 psi | 42% | 1532 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 47,355 psi | 76% | 2638 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 44,672 psi | 72% | 2608 fps | 95% |
| ReloadSwiss RS 52 | 54.7 gr | 80% | 37,260 psi | 60% | 2562 fps | 96.1% |
| ReloadSwiss RS 60 | 55.6 gr | 80% | 30,821 psi | 49% | 2428 fps | 97.1% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 39,610 psi | 64% | 2621 fps | 95.6% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 43,265 psi | 69% | 2690 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 43,192 psi | 69% | 2546 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 80% | 37,579 psi | 60% | 2454 fps | 98.1% |
| Rottweil R 903 | <<locked>> | 80% | 30,864 psi | 49% | 2356 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 92% | 42,322 psi | 68% | 2566 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,827 psi | 62% | 2523 fps | 99.4% |
| Shooters World Precision | <<locked>> | 80% | 35,592 psi | 57% | 2431 fps | 97.6% |
| Shooters World SW4350 | <<locked>> | 98% | 48,225 psi | 77% | 2690 fps | 95.5% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 49,966 psi | 80% | 2654 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 34,156 psi | 55% | 2457 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 50,140 psi | 80% | 2641 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 40,103 psi | 64% | 2520 fps | 95.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,711 psi | 62% | 2510 fps | 97.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,988 psi | 66% | 2464 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,779 psi | 54% | 2333 fps | 99.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 47,761 psi | 77% | 2615 fps | 95.1% |
| Somchem S321 | <<locked>> | 80% | 45,368 psi | 73% | 2631 fps | 99.5% |
| Somchem S335 | <<locked>> | 80% | 40,480 psi | 65% | 2467 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 39,842 psi | 64% | 2523 fps | 97.3% |
| Somchem S355 | <<locked>> | 80% | 31,908 psi | 51% | 2365 fps | 95.4% |
| Somchem S365 | <<locked>> | 88% | 29,718 psi | 48% | 2395 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 46,441 psi | 74% | 2533 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,162 psi | 66% | 2464 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,593 psi | 59% | 2444 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,362 psi | 60% | 2448 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 80% | 30,298 psi | 49% | 2306 fps | 96.4% |
| Vihtavuori N160 | <<locked>> | 92% | 39,552 psi | 63% | 2556 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 42,264 psi | 68% | 2549 fps | 99% |
| Vihtavuori N540 | <<locked>> | 80% | 35,897 psi | 58% | 2434 fps | 99.3% |
| Vihtavuori N550 | <<locked>> | 92% | 38,885 psi | 62% | 2559 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 33,025 psi | 53% | 2382 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 41,394 psi | 66% | 2592 fps | 99.4% |
| Winchester 760 | <<locked>> | 98% | 49,400 psi | 79% | 2772 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,014 psi | 61% | 2510 fps | 97.5% |
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 98 powders for .338 Win Mag. loaded with the .338 | 200gr | Barnes Solid. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,936 fps; across all powders the maximum-charge window runs from 1,673 fps to 2,936 fps. Accurate 4350 gives the best case fill at 100 %, and 98 of the 98 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 200.0 gr projectile in 0.338" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-17 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 Power Pro 2000-MR, ReloadSwiss RS 60, ReloadSwiss RS 52 rank at the top here: for .338 Win Mag. with the .338 | 200gr | Barnes Solid 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.