Load Specifications
Bullet:.338 | 225gr | CutEdge MTH
Bullet Manufacturer:Cutting Edge
Bullet Weight:225 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:1:11.0
Load data in caliber .338 Win Mag. with .338 | 225gr | CutEdge MTH bullet and 105 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Power Pro 2000-MR 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.
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>> | 86% | 53,258 psi | 85% | 2500 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 55,027 psi | 88% | 2569 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 53,983 psi | 87% | 2556 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 53,374 psi | 86% | 2582 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 54,824 psi | 88% | 2562 fps | 96.7% |
| Accurate 4064 | <<locked>> | 94% | 54,128 psi | 87% | 2602 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 49,980 psi | 80% | 2625 fps | 99.1% |
| Accurate LT-30 | <<locked>> | 82% | 55,956 psi | 90% | 2487 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 56,376 psi | 90% | 2513 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 55,680 psi | 89% | 2638 fps | 100% |
| ADI AR 2208 | <<locked>> | 94% | 53,374 psi | 86% | 2589 fps | 99.6% |
| ADI Benchmark 8208 | <<locked>> | 88% | 55,071 psi | 88% | 2595 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 55,332 psi | 89% | 2569 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 53,098 psi | 85% | 2641 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 55,288 psi | 89% | 2749 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 56,246 psi | 90% | 2654 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 56,405 psi | 90% | 2543 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 53,621 psi | 86% | 2631 fps | 99.7% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 49,197 psi | 79% | 2635 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 98% | 53,229 psi | 85% | 2720 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,418 psi | 55% | 2379 fps | 97.2% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 55,114 psi | 88% | 2490 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 55,637 psi | 89% | 2657 fps | 99.7% |
| Bofors RP3 | <<locked>> | 94% | 53,142 psi | 85% | 2621 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 53,766 psi | 86% | 2589 fps | 96.8% |
| Hodgdon Benchmark | <<locked>> | 86% | 53,650 psi | 86% | 2533 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 53,983 psi | 87% | 2625 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 56,115 psi | 90% | 2717 fps | 99.9% |
| Hodgdon H322 | <<locked>> | 84% | 55,709 psi | 89% | 2589 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 53,055 psi | 85% | 2566 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 54,447 psi | 87% | 2635 fps | 99.2% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 53,476 psi | 86% | 2674 fps | 97.5% |
| Hodgdon H4350 | <<locked>> | 98% | 54,795 psi | 88% | 2641 fps | 96.3% |
| Hodgdon H4895 | <<locked>> | 90% | 56,188 psi | 90% | 2648 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 45,005 psi | 72% | 2516 fps | 99.5% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 55,245 psi | 89% | 2677 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 54,839 psi | 88% | 2713 fps | 97.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,041 psi | 56% | 1558 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 54,447 psi | 87% | 2605 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 55,825 psi | 90% | 2628 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 56,231 psi | 90% | 2621 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 90% | 53,374 psi | 86% | 2556 fps | 97.3% |
| IMR 4198 | <<locked>> | 82% | 53,534 psi | 86% | 2464 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 50,343 psi | 81% | 2562 fps | 96.2% |
| IMR 4451 Enduron | <<locked>> | 98% | 55,985 psi | 90% | 2621 fps | 97.6% |
| IMR 4831ᴾ | <<locked>> | 100% | 47,572 psi | 76% | 2572 fps | 98.8% |
| IMR 4895 | <<locked>> | 92% | 54,969 psi | 88% | 2657 fps | 100% |
| IMR 8208 XBR | <<locked>> | 88% | 55,071 psi | 88% | 2595 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 54,940 psi | 88% | 2579 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 54,926 psi | 88% | 2612 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 55,782 psi | 89% | 2572 fps | 99.9% |
| Lovex S062 | <<locked>> | 94% | 55,564 psi | 89% | 2612 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 54,621 psi | 88% | 2612 fps | 98.7% |
| Lovex S070ᴾ | <<locked>> | 100% | 52,025 psi | 83% | 2595 fps | 97.3% |
| Norma 201 | <<locked>> | 90% | 54,273 psi | 87% | 2585 fps | 100% |
| Norma 202 | <<locked>> | 90% | 54,882 psi | 88% | 2589 fps | 100% |
| Norma 203B | <<locked>> | 94% | 56,101 psi | 90% | 2664 fps | 100% |
| Norma URPᴾ | <<locked>> | 100% | 49,603 psi | 80% | 2618 fps | 99% |
| Ramshot Big Game | <<locked>> | 92% | 53,040 psi | 85% | 2641 fps | 99.8% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 48,675 psi | 78% | 2612 fps | 97.4% |
| Ramshot TAC | <<locked>> | 88% | 55,463 psi | 89% | 2615 fps | 98.9% |
| Ramshot Wild Boar | <<locked>> | 88% | 54,882 psi | 88% | 2631 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 86% | 56,289 psi | 90% | 2602 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,360 psi | 57% | 1594 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 54,592 psi | 88% | 2579 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 55,100 psi | 88% | 2618 fps | 98.2% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 53,838 psi | 86% | 2690 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 53,142 psi | 85% | 2720 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 49,676 psi | 80% | 2648 fps | 98.9% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 50,430 psi | 81% | 2671 fps | 98.6% |
| Rottweil R 901 | <<locked>> | 88% | 55,114 psi | 88% | 2566 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 54,679 psi | 88% | 2582 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 52,707 psi | 85% | 2612 fps | 100% |
| Rottweil R 907 | <<locked>> | 98% | 53,766 psi | 86% | 2589 fps | 96.8% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 54,621 psi | 88% | 2612 fps | 98.7% |
| Shooters World Match Rifle | <<locked>> | 90% | 54,926 psi | 88% | 2612 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 55,564 psi | 89% | 2612 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 52,025 psi | 83% | 2595 fps | 97.3% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 54,389 psi | 87% | 2552 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 54,781 psi | 88% | 2671 fps | 99.9% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 54,360 psi | 87% | 2526 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 53,519 psi | 86% | 2592 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 54,273 psi | 87% | 2615 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 53,113 psi | 85% | 2490 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 56,217 psi | 90% | 2526 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 55,376 psi | 89% | 2572 fps | 97.6% |
| Somchem S321 | <<locked>> | 86% | 56,159 psi | 90% | 2628 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 55,434 psi | 89% | 2530 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 53,185 psi | 85% | 2585 fps | 99.8% |
| Somchem S355 | <<locked>> | 96% | 53,490 psi | 86% | 2612 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 44,048 psi | 71% | 2569 fps | 100% |
| Vihtavuori N130 | <<locked>> | 86% | 56,217 psi | 90% | 2497 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 53,272 psi | 85% | 2477 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 54,346 psi | 87% | 2552 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 55,608 psi | 89% | 2572 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 55,129 psi | 88% | 2595 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 52,344 psi | 84% | 2618 fps | 99.2% |
| Vihtavuori N530 | <<locked>> | 88% | 55,608 psi | 89% | 2595 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 53,447 psi | 86% | 2566 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 51,068 psi | 82% | 2618 fps | 99% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 36,912 psi | 59% | 2448 fps | 97.2% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 53,055 psi | 85% | 2602 fps | 100% |
| Winchester 748 | <<locked>> | 88% | 55,216 psi | 89% | 2641 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 53,751 psi | 86% | 2680 fps | 97.6% |
| Winchester StaBALL Match | <<locked>> | 90% | 53,925 psi | 86% | 2621 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% | 44,092 psi | 71% | 2375 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 48,095 psi | 77% | 2477 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 36,230 psi | 58% | 2297 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 43,192 psi | 69% | 2438 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 48,080 psi | 77% | 2464 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 34,287 psi | 55% | 2287 fps | 99.8% |
| Accurate 4350 | <<locked>> | 90% | 34,969 psi | 56% | 2359 fps | 95.8% |
| Accurate LT-30 | <<locked>> | 80% | 52,620 psi | 84% | 2444 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 53,026 psi | 85% | 2470 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 40,640 psi | 65% | 2398 fps | 98.5% |
| ADI AR 2208 | <<locked>> | 80% | 34,534 psi | 55% | 2257 fps | 96.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,714 psi | 68% | 2408 fps | 99.5% |
| Alliant AR-Comp | <<locked>> | 80% | 42,424 psi | 68% | 2402 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 49,806 psi | 80% | 2592 fps | 99.9% |
| Alliant Power Pro 2000-MR | 53.2 gr | 80% | 36,535 psi | 59% | 2411 fps | 96.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,779 psi | 54% | 2277 fps | 97.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 50,024 psi | 80% | 2464 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,405 psi | 58% | 2333 fps | 97% |
| Alliant Reloder-16 | <<locked>> | 88% | 33,895 psi | 54% | 2329 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 82% | 30,980 psi | 50% | 2287 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 96% | 30,487 psi | 49% | 2277 fps | 95.4% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 51,808 psi | 83% | 2448 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,639 psi | 64% | 2398 fps | 97.3% |
| Bofors RP3 | <<locked>> | 80% | 32,909 psi | 53% | 2274 fps | 97.5% |
| Bofors RP7 | <<locked>> | 94% | 47,311 psi | 76% | 2490 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,599 psi | 72% | 2398 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,886 psi | 66% | 2421 fps | 99.6% |
| Hodgdon CFE223 | <<locked>> | 80% | 45,252 psi | 73% | 2552 fps | 98.9% |
| Hodgdon H322 | <<locked>> | 80% | 48,849 psi | 78% | 2497 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 49,647 psi | 80% | 2520 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 36,550 psi | 59% | 2329 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 94% | 43,845 psi | 70% | 2520 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 96% | 51,271 psi | 82% | 2592 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 40,944 psi | 66% | 2408 fps | 98.9% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 28,892 psi | 46% | 2182 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,767 psi | 59% | 2375 fps | 98.5% |
| Hodgdon Superformance | <<locked>> | 96% | 47,340 psi | 76% | 2595 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,831 psi | 41% | 1388 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,392 psi | 63% | 2365 fps | 98.6% |
| IMR 3031 | <<locked>> | 80% | 40,248 psi | 65% | 2405 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,172 psi | 58% | 2290 fps | 97% |
| IMR 4166 Enduron | <<locked>> | 84% | 44,106 psi | 71% | 2408 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 50,488 psi | 81% | 2425 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 47,369 psi | 76% | 2516 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 90% | 43,845 psi | 70% | 2434 fps | 95% |
| IMR 4831 | <<locked>> | 90% | 34,127 psi | 55% | 2323 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 37,275 psi | 60% | 2362 fps | 97.8% |
| IMR 8208 XBR | <<locked>> | 80% | 42,714 psi | 68% | 2408 fps | 99.5% |
| Lovex D073.5 | <<locked>> | 80% | 47,805 psi | 77% | 2484 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 39,102 psi | 63% | 2375 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 41,060 psi | 66% | 2343 fps | 98.5% |
| Lovex S062 | <<locked>> | 80% | 35,839 psi | 57% | 2293 fps | 98.5% |
| Lovex S065 | <<locked>> | 90% | 40,118 psi | 64% | 2375 fps | 95.7% |
| Lovex S070 | <<locked>> | 94% | 43,018 psi | 69% | 2451 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 39,624 psi | 64% | 2352 fps | 99.2% |
| Norma 202 | <<locked>> | 80% | 39,987 psi | 64% | 2365 fps | 100% |
| Norma 203B | <<locked>> | 80% | 35,795 psi | 57% | 2323 fps | 97.4% |
| Norma URP | <<locked>> | 88% | 33,533 psi | 54% | 2316 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 35,114 psi | 56% | 2329 fps | 96.9% |
| Ramshot Hunter | <<locked>> | 94% | 40,147 psi | 64% | 2457 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 42,569 psi | 68% | 2411 fps | 96.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,771 psi | 67% | 2428 fps | 98.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 46,253 psi | 74% | 2454 fps | 99.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,208 psi | 42% | 1424 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 48,066 psi | 77% | 2487 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 42,395 psi | 68% | 2418 fps | 95.5% |
| ReloadSwiss RS 52 | 51.6 gr | 80% | 37,768 psi | 61% | 2421 fps | 97.4% |
| ReloadSwiss RS 60 | 52.4 gr | 80% | 30,908 psi | 50% | 2297 fps | 98.4% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 34,998 psi | 56% | 2379 fps | 95.3% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 38,261 psi | 61% | 2441 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 43,381 psi | 70% | 2395 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 37,695 psi | 60% | 2310 fps | 98.8% |
| Rottweil R 903 | <<locked>> | 80% | 30,922 psi | 50% | 2221 fps | 96.5% |
| Rottweil R 907 | <<locked>> | 94% | 47,311 psi | 76% | 2490 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 90% | 40,118 psi | 64% | 2375 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,102 psi | 63% | 2375 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 35,839 psi | 57% | 2293 fps | 98.5% |
| Shooters World SW4350 | <<locked>> | 94% | 43,018 psi | 69% | 2451 fps | 95.3% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 50,604 psi | 81% | 2500 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 32,213 psi | 52% | 2270 fps | 96% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 50,981 psi | 82% | 2484 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 40,451 psi | 65% | 2379 fps | 96.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,117 psi | 63% | 2369 fps | 98.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,437 psi | 66% | 2320 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,142 psi | 55% | 2198 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 45,368 psi | 73% | 2425 fps | 95.6% |
| Somchem S321 | <<locked>> | 80% | 45,919 psi | 74% | 2480 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 40,799 psi | 65% | 2320 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 40,379 psi | 65% | 2385 fps | 98.3% |
| Somchem S355 | <<locked>> | 80% | 32,082 psi | 51% | 2231 fps | 96.7% |
| Somchem S365 | <<locked>> | 84% | 26,194 psi | 42% | 2165 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 46,978 psi | 75% | 2379 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,713 psi | 67% | 2316 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,014 psi | 59% | 2300 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,666 psi | 60% | 2306 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 30,371 psi | 49% | 2175 fps | 97.5% |
| Vihtavuori N160 | <<locked>> | 88% | 35,201 psi | 56% | 2320 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 42,569 psi | 68% | 2402 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 80% | 36,289 psi | 58% | 2297 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 34,432 psi | 55% | 2323 fps | 95% |
| Vihtavuori N555 | <<locked>> | 96% | 32,300 psi | 52% | 2346 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 29,037 psi | 47% | 2152 fps | 95.1% |
| Winchester 748 | <<locked>> | 80% | 41,858 psi | 67% | 2441 fps | 99.8% |
| Winchester 760 | <<locked>> | 94% | 43,845 psi | 70% | 2520 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,348 psi | 61% | 2369 fps | 98.5% |
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 105 powders for .338 Win Mag. loaded with the .338 | 225gr | CutEdge MTH. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,749 fps; across all powders the maximum-charge window runs from 1,558 fps to 2,749 fps. Accurate 4350 gives the best case fill at 100 %, and 105 of the 105 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 225.0 gr projectile in 0.338" calls for a 1:11.0 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. ReloadSwiss RS 60, Alliant Power Pro 2000-MR, ReloadSwiss RS 52 rank at the top here: for .338 Win Mag. with the .338 | 225gr | CutEdge MTH 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.