Load Specifications
Load data in caliber .338 RCM with .338 | 200gr | Federal Fusion bullet and 91 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, Hodgdon CFE223 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>> | 92% | 55,622 psi | 89% | 2644 fps | 100% |
| Accurate 2200 | <<locked>> | 84% | 56,173 psi | 90% | 2733 fps | 98.7% |
| Accurate 2230 | <<locked>> | 82% | 53,258 psi | 85% | 2690 fps | 98.6% |
| Accurate 2460 | <<locked>> | 88% | 54,070 psi | 87% | 2667 fps | 100% |
| Accurate 2495 | <<locked>> | 98% | 55,535 psi | 89% | 2697 fps | 100% |
| Accurate 2520 | <<locked>> | 92% | 55,477 psi | 89% | 2723 fps | 100% |
| Accurate 4064ᴾ | <<locked>> | 100% | 54,882 psi | 88% | 2733 fps | 100% |
| Accurate LT-30 | <<locked>> | 86% | 56,202 psi | 90% | 2598 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 53,374 psi | 86% | 2575 fps | 100% |
| ADI AR 2206H | <<locked>> | 94% | 54,360 psi | 87% | 2720 fps | 99.1% |
| ADI AR 2207 | <<locked>> | 82% | 54,099 psi | 87% | 2575 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 55,245 psi | 89% | 2713 fps | 98.6% |
| ADI AR 2219 | <<locked>> | 86% | 56,246 psi | 90% | 2713 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 92% | 54,012 psi | 87% | 2687 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 92% | 52,823 psi | 85% | 2671 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 88% | 55,376 psi | 89% | 2785 fps | 99.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 96% | 53,853 psi | 86% | 2818 fps | 98.4% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 54,201 psi | 87% | 2733 fps | 99.6% |
| Alliant Reloder-10x | <<locked>> | 88% | 55,608 psi | 89% | 2654 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 98% | 55,085 psi | 88% | 2753 fps | 98.8% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 47,906 psi | 77% | 2726 fps | 98.6% |
| Alliant Reloder-7 | <<locked>> | 82% | 55,288 psi | 89% | 2595 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 55,114 psi | 88% | 2595 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 94% | 54,201 psi | 87% | 2736 fps | 98.2% |
| Bofors RP3ᴾ | <<locked>> | 100% | 54,302 psi | 87% | 2746 fps | 99.6% |
| Hodgdon Benchmark | <<locked>> | 90% | 53,055 psi | 85% | 2628 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 94% | 56,057 psi | 90% | 2762 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 90% | 54,056 psi | 87% | 2795 fps | 98.7% |
| Hodgdon H322 | <<locked>> | 88% | 54,708 psi | 88% | 2694 fps | 100% |
| Hodgdon H335 | <<locked>> | 88% | 55,767 psi | 89% | 2717 fps | 100% |
| Hodgdon H380ᴾ | <<locked>> | 100% | 56,246 psi | 90% | 2756 fps | 97.9% |
| Hodgdon H4198 | <<locked>> | 82% | 54,911 psi | 88% | 2602 fps | 100% |
| Hodgdon H4895 | <<locked>> | 94% | 54,766 psi | 88% | 2733 fps | 99.4% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 38,043 psi | 61% | 2470 fps | 96% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 53,258 psi | 85% | 2759 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,113 psi | 55% | 1601 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 53,200 psi | 85% | 2690 fps | 99.2% |
| IMR 3031 | <<locked>> | 94% | 53,592 psi | 86% | 2726 fps | 100% |
| IMR 4064 | <<locked>> | 98% | 54,868 psi | 88% | 2700 fps | 98.8% |
| IMR 4198 | <<locked>> | 88% | 56,130 psi | 90% | 2615 fps | 100% |
| IMR 4895 | <<locked>> | 98% | 56,391 psi | 90% | 2785 fps | 99.3% |
| IMR 8208 XBR | <<locked>> | 92% | 54,012 psi | 87% | 2687 fps | 99.6% |
| Lovex D073.4 | <<locked>> | 82% | 53,983 psi | 87% | 2677 fps | 100% |
| Lovex D073.5 | <<locked>> | 88% | 54,128 psi | 87% | 2677 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 94% | 53,142 psi | 85% | 2703 fps | 100% |
| Lovex S060 | <<locked>> | 94% | 55,245 psi | 89% | 2661 fps | 99.1% |
| Lovex S062 | <<locked>> | 98% | 53,940 psi | 86% | 2697 fps | 99.7% |
| Norma 200 | <<locked>> | 84% | 55,593 psi | 89% | 2628 fps | 100% |
| Norma 201 | <<locked>> | 94% | 53,330 psi | 86% | 2674 fps | 99.6% |
| Norma 202 | <<locked>> | 94% | 53,258 psi | 85% | 2680 fps | 100% |
| Norma 203B | <<locked>> | 98% | 54,085 psi | 87% | 2740 fps | 99.1% |
| Ramshot Big Game | <<locked>> | 98% | 54,592 psi | 88% | 2766 fps | 99% |
| Ramshot TAC | <<locked>> | 92% | 54,592 psi | 88% | 2690 fps | 97% |
| Ramshot Wild Boar | <<locked>> | 92% | 53,403 psi | 86% | 2713 fps | 98.9% |
| Ramshot X-Terminator | <<locked>> | 90% | 55,535 psi | 89% | 2687 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,389 psi | 55% | 1640 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 53,969 psi | 87% | 2677 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 98% | 53,635 psi | 86% | 2684 fps | 95.7% |
| ReloadSwiss RS 52 | <<locked>> | 96% | 54,795 psi | 88% | 2815 fps | 98.8% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 51,256 psi | 82% | 2792 fps | 100% |
| Rottweil R 901 | <<locked>> | 92% | 54,230 psi | 87% | 2664 fps | 100% |
| Rottweil R 902 | <<locked>> | 96% | 53,461 psi | 86% | 2667 fps | 99.6% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 50,517 psi | 81% | 2684 fps | 99.1% |
| Shooters World AR Plus | <<locked>> | 82% | 53,983 psi | 87% | 2677 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 94% | 53,142 psi | 85% | 2703 fps | 100% |
| Shooters World Precision | <<locked>> | 98% | 53,940 psi | 86% | 2697 fps | 99.7% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 54,172 psi | 87% | 2648 fps | 99.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 53,838 psi | 86% | 2329 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 53,156 psi | 85% | 2674 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 52,620 psi | 84% | 2746 fps | 98.8% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 53,200 psi | 85% | 2628 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 94% | 56,130 psi | 90% | 2720 fps | 97.7% |
| SNPE Vectan SP 9 | <<locked>> | 96% | 56,318 psi | 90% | 2743 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 55,782 psi | 89% | 2628 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 55,056 psi | 88% | 2621 fps | 100% |
| Somchem S321 | <<locked>> | 90% | 55,332 psi | 89% | 2723 fps | 99.8% |
| Somchem S335 | <<locked>> | 94% | 54,679 psi | 88% | 2628 fps | 100% |
| Somchem S341 | <<locked>> | 94% | 55,521 psi | 89% | 2717 fps | 99.1% |
| Somchem S355ᴾ | <<locked>> | 100% | 51,256 psi | 82% | 2684 fps | 99% |
| Somchem S365ᴾ | <<locked>> | 100% | 36,941 psi | 59% | 2516 fps | 97.3% |
| Vihtavuori N120 | <<locked>> | 82% | 54,012 psi | 87% | 2526 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 55,622 psi | 89% | 2605 fps | 100% |
| Vihtavuori N133 | <<locked>> | 94% | 55,477 psi | 89% | 2618 fps | 100% |
| Vihtavuori N135 | <<locked>> | 98% | 55,564 psi | 89% | 2690 fps | 100% |
| Vihtavuori N140 | <<locked>> | 96% | 53,911 psi | 86% | 2661 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 49,719 psi | 80% | 2628 fps | 99.6% |
| Vihtavuori N530 | <<locked>> | 92% | 54,723 psi | 88% | 2687 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 98% | 55,550 psi | 89% | 2707 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 45,397 psi | 73% | 2566 fps | 98% |
| Winchester 748 | <<locked>> | 92% | 53,417 psi | 86% | 2730 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 96% | 55,840 psi | 90% | 2753 fps | 99.5% |
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% | 38,203 psi | 61% | 2382 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 49,400 psi | 79% | 2631 fps | 97.6% |
| Accurate 2230 | <<locked>> | 80% | 49,763 psi | 80% | 2638 fps | 98.1% |
| Accurate 2460 | <<locked>> | 80% | 41,481 psi | 67% | 2474 fps | 99.5% |
| Accurate 2495 | <<locked>> | 80% | 30,864 psi | 49% | 2293 fps | 99.6% |
| Accurate 2520 | <<locked>> | 80% | 36,796 psi | 59% | 2421 fps | 98.5% |
| Accurate 4064 | <<locked>> | 80% | 29,225 psi | 47% | 2270 fps | 97.5% |
| Accurate LT-30 | <<locked>> | 80% | 46,963 psi | 75% | 2470 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 47,340 psi | 76% | 2487 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 82% | 37,434 psi | 60% | 2425 fps | 95.6% |
| ADI AR 2207 | <<locked>> | 80% | 50,836 psi | 82% | 2533 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 38,464 psi | 62% | 2428 fps | 95% |
| ADI AR 2219 | <<locked>> | 80% | 46,180 psi | 74% | 2569 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 37,217 psi | 60% | 2395 fps | 96.9% |
| Alliant AR-Comp | <<locked>> | 80% | 35,665 psi | 57% | 2408 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 42,685 psi | 68% | 2575 fps | 97.8% |
| Alliant Power Pro 2000-MR | 54.1 gr | 88% | 41,220 psi | 66% | 2589 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 32,677 psi | 52% | 2346 fps | 95.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 43,482 psi | 70% | 2480 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 37,768 psi | 61% | 2451 fps | 95.1% |
| Alliant Reloder-17 | <<locked>> | 92% | 36,999 psi | 59% | 2507 fps | 95.6% |
| Alliant Reloder-7 | <<locked>> | 80% | 52,025 psi | 83% | 2552 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 45,600 psi | 73% | 2464 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 41,452 psi | 66% | 2523 fps | 95.5% |
| Bofors RP3 | <<locked>> | 86% | 34,142 psi | 55% | 2395 fps | 95.8% |
| Hodgdon Benchmark | <<locked>> | 80% | 39,407 psi | 63% | 2398 fps | 98% |
| Hodgdon BL-C2 | <<locked>> | 80% | 34,911 psi | 56% | 2402 fps | 97% |
| Hodgdon CFE223 | 50.3 gr | 80% | 38,319 psi | 61% | 2513 fps | 95.2% |
| Hodgdon H322 | <<locked>> | 80% | 42,148 psi | 68% | 2503 fps | 99.9% |
| Hodgdon H335 | <<locked>> | 80% | 42,699 psi | 68% | 2520 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 92% | 43,221 psi | 69% | 2549 fps | 95.2% |
| Hodgdon H4198 | <<locked>> | 80% | 51,706 psi | 83% | 2556 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 35,462 psi | 57% | 2388 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 35,839 psi | 57% | 2425 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 33,576 psi | 54% | 2392 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,454 psi | 41% | 1434 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 34,156 psi | 55% | 2343 fps | 95% |
| IMR 3031 | <<locked>> | 80% | 33,953 psi | 54% | 2398 fps | 99.6% |
| IMR 4064 | <<locked>> | 86% | 37,942 psi | 61% | 2411 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 44,512 psi | 71% | 2454 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 36,361 psi | 58% | 2434 fps | 95.4% |
| IMR 8208 XBR | <<locked>> | 80% | 37,217 psi | 60% | 2395 fps | 96.9% |
| Lovex D073.4 | <<locked>> | 80% | 50,473 psi | 81% | 2628 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 80% | 41,118 psi | 66% | 2470 fps | 98.7% |
| Lovex D073.6 | <<locked>> | 80% | 33,156 psi | 53% | 2356 fps | 97.6% |
| Lovex S060 | <<locked>> | 80% | 36,260 psi | 58% | 2329 fps | 95.2% |
| Lovex S062 | <<locked>> | 82% | 32,953 psi | 53% | 2316 fps | 95.7% |
| Norma 200 | <<locked>> | 80% | 49,298 psi | 79% | 2546 fps | 100% |
| Norma 201 | <<locked>> | 80% | 34,621 psi | 56% | 2339 fps | 96.3% |
| Norma 202 | <<locked>> | 80% | 34,389 psi | 55% | 2356 fps | 98.5% |
| Norma 203B | <<locked>> | 86% | 37,057 psi | 59% | 2444 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 86% | 36,854 psi | 59% | 2451 fps | 95% |
| Ramshot TAC | <<locked>> | 88% | 47,921 psi | 77% | 2589 fps | 95.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 35,839 psi | 57% | 2398 fps | 95% |
| Ramshot X-Terminator | <<locked>> | 80% | 40,364 psi | 65% | 2438 fps | 96.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,614 psi | 41% | 1467 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 41,771 psi | 67% | 2484 fps | 99.1% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 50,285 psi | 81% | 2635 fps | 95% |
| ReloadSwiss RS 52 | 51.2 gr | 86% | 39,001 psi | 63% | 2543 fps | 95.5% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 30,472 psi | 49% | 2349 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 38,029 psi | 61% | 2395 fps | 99% |
| Rottweil R 902 | <<locked>> | 80% | 32,822 psi | 53% | 2293 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 88% | 34,084 psi | 55% | 2385 fps | 95.4% |
| Shooters World AR Plus | <<locked>> | 80% | 50,473 psi | 81% | 2628 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 80% | 33,156 psi | 53% | 2356 fps | 97.6% |
| Shooters World Precision | <<locked>> | 82% | 32,953 psi | 53% | 2316 fps | 95.7% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 44,135 psi | 71% | 2493 fps | 98.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 51,227 psi | 82% | 2300 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 46,485 psi | 75% | 2575 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 38,130 psi | 61% | 2487 fps | 95.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 44,077 psi | 71% | 2493 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 45,759 psi | 73% | 2562 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 36,056 psi | 58% | 2395 fps | 95.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 36,216 psi | 58% | 2316 fps | 98.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,486 psi | 47% | 2185 fps | 98% |
| Somchem S321 | <<locked>> | 80% | 39,581 psi | 63% | 2467 fps | 97.9% |
| Somchem S335 | <<locked>> | 80% | 35,795 psi | 57% | 2323 fps | 99.3% |
| Somchem S341 | <<locked>> | 82% | 36,869 psi | 59% | 2405 fps | 95.3% |
| Somchem S355 | <<locked>> | 88% | 35,462 psi | 57% | 2398 fps | 95.6% |
| Somchem S365 | <<locked>> | 96% | 32,605 psi | 52% | 2411 fps | 95.6% |
| Vihtavuori N120 | <<locked>> | 80% | 50,792 psi | 81% | 2484 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 41,133 psi | 66% | 2395 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 36,201 psi | 58% | 2323 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 80% | 31,314 psi | 50% | 2293 fps | 99.6% |
| Vihtavuori N140 | <<locked>> | 80% | 32,561 psi | 52% | 2297 fps | 98.3% |
| Vihtavuori N150 | <<locked>> | 86% | 31,618 psi | 51% | 2293 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 36,985 psi | 59% | 2388 fps | 97% |
| Vihtavuori N540 | <<locked>> | 80% | 31,256 psi | 50% | 2280 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 37,347 psi | 60% | 2411 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 35,578 psi | 57% | 2421 fps | 97.5% |
| Winchester StaBALL Match | <<locked>> | 82% | 35,041 psi | 56% | 2395 fps | 95.5% |
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 91 powders for .338 RCM loaded with the .338 | 200gr | Federal Fusion. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,818 fps; across all powders the maximum-charge window runs from 1,601 fps to 2,818 fps. Accurate 4064 gives the best case fill at 100 %, and 91 of the 91 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 200.0 gr projectile in 0.338" calls for a 1:17.0 twist; slower twists will usually not stabilise this weight. Accurate 4064, ADI AR 2208, Alliant Reloder- TS 15.5 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, Hodgdon CFE223, ReloadSwiss RS 52 rank at the top here: for .338 RCM with the .338 | 200gr | Federal Fusion 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.