Load Specifications
Load data in caliber .338 Win Mag. with .338 | 250gr | Peregrine VRG-3 bullet and 103 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 Hodgdon H414.
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>> | 84% | 56,289 psi | 90% | 2415 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 54,810 psi | 88% | 2438 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 53,098 psi | 85% | 2457 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 54,157 psi | 87% | 2457 fps | 98.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 41,945 psi | 67% | 2375 fps | 97.6% |
| Accurate 4064 | <<locked>> | 90% | 55,013 psi | 88% | 2487 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 54,795 psi | 88% | 2572 fps | 100% |
| ADI AR 2206H | <<locked>> | 86% | 55,521 psi | 89% | 2516 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 53,258 psi | 85% | 2477 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 50,009 psi | 80% | 2510 fps | 96.6% |
| ADI Benchmark 8208 | <<locked>> | 84% | 54,563 psi | 87% | 2470 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 55,579 psi | 89% | 2441 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 55,492 psi | 89% | 2635 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 53,301 psi | 85% | 2497 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 53,679 psi | 86% | 2516 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 52,895 psi | 85% | 2579 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 53,809 psi | 86% | 2608 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 49,023 psi | 79% | 2503 fps | 96.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,001 psi | 64% | 2398 fps | 99.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 44,701 psi | 72% | 2549 fps | 99.3% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 55,448 psi | 89% | 2539 fps | 100% |
| Bofors RP3 | <<locked>> | 90% | 53,664 psi | 86% | 2510 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 53,751 psi | 86% | 2490 fps | 98.3% |
| Hodgdon Benchmark | <<locked>> | 84% | 56,289 psi | 90% | 2454 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 53,853 psi | 86% | 2500 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 55,956 psi | 90% | 2592 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 54,578 psi | 88% | 2523 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 96% | 54,360 psi | 87% | 2579 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 94% | 55,027 psi | 88% | 2543 fps | 98% |
| Hodgdon H4895 | <<locked>> | 86% | 56,086 psi | 90% | 2526 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 52,475 psi | 84% | 2510 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 55,796 psi | 89% | 2562 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 54,882 psi | 88% | 2618 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,636 psi | 57% | 1503 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 53,824 psi | 86% | 2484 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 56,304 psi | 90% | 2503 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 56,130 psi | 90% | 2503 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 56,057 psi | 90% | 2493 fps | 99% |
| IMR 4350 | <<locked>> | 98% | 54,128 psi | 87% | 2516 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 94% | 55,738 psi | 89% | 2516 fps | 98.9% |
| IMR 4831ᴾ | <<locked>> | 100% | 55,434 psi | 89% | 2566 fps | 100% |
| IMR 4895 | <<locked>> | 88% | 55,071 psi | 88% | 2539 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 54,563 psi | 87% | 2470 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 55,201 psi | 89% | 2493 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 55,085 psi | 88% | 2454 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 55,767 psi | 89% | 2497 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 55,056 psi | 88% | 2510 fps | 99.6% |
| Lovex S070 | <<locked>> | 98% | 56,043 psi | 90% | 2546 fps | 99.1% |
| Norma 201 | <<locked>> | 86% | 54,157 psi | 87% | 2467 fps | 100% |
| Norma 202 | <<locked>> | 86% | 54,824 psi | 88% | 2467 fps | 100% |
| Norma 203B | <<locked>> | 90% | 56,318 psi | 90% | 2546 fps | 100% |
| Norma 204 | <<locked>> | 98% | 54,636 psi | 88% | 2562 fps | 97.4% |
| Norma MRPᴾ | <<locked>> | 100% | 44,831 psi | 72% | 2513 fps | 97.2% |
| Norma URP | <<locked>> | 98% | 54,215 psi | 87% | 2566 fps | 100% |
| Ramshot Big Game | <<locked>> | 88% | 53,519 psi | 86% | 2530 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 52,721 psi | 85% | 2566 fps | 99.3% |
| Ramshot TAC | <<locked>> | 84% | 54,679 psi | 88% | 2497 fps | 99.6% |
| Ramshot Wild Boar | <<locked>> | 84% | 54,476 psi | 87% | 2510 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 55,230 psi | 89% | 2474 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,056 psi | 58% | 1539 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 54,911 psi | 88% | 2510 fps | 99.2% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 54,186 psi | 87% | 2572 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 53,795 psi | 86% | 2608 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 54,679 psi | 88% | 2598 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 54,186 psi | 87% | 2628 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 84% | 55,042 psi | 88% | 2444 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 54,737 psi | 88% | 2464 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 53,548 psi | 86% | 2503 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 51,663 psi | 83% | 2487 fps | 95.7% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 47,674 psi | 76% | 2487 fps | 96.5% |
| Rottweil R 907 | <<locked>> | 94% | 53,751 psi | 86% | 2490 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 96% | 55,056 psi | 88% | 2510 fps | 99.6% |
| Shooters World Match Rifle | <<locked>> | 86% | 55,201 psi | 89% | 2493 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 55,767 psi | 89% | 2497 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 56,043 psi | 90% | 2546 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 55,448 psi | 89% | 2559 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 53,040 psi | 85% | 2477 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 53,853 psi | 86% | 2493 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 55,854 psi | 90% | 2408 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 56,144 psi | 90% | 2408 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 55,288 psi | 89% | 2470 fps | 98.8% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 47,224 psi | 76% | 2480 fps | 96.4% |
| Somchem S321 | <<locked>> | 82% | 55,695 psi | 89% | 2503 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 55,042 psi | 88% | 2405 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 52,837 psi | 85% | 2467 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 53,838 psi | 86% | 2497 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 52,069 psi | 83% | 2566 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 48,254 psi | 77% | 2467 fps | 97.4% |
| Vihtavuori N130 | <<locked>> | 82% | 55,506 psi | 89% | 2369 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 56,231 psi | 90% | 2392 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 54,650 psi | 88% | 2428 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 55,390 psi | 89% | 2448 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 55,419 psi | 89% | 2480 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 52,982 psi | 85% | 2513 fps | 99.9% |
| Vihtavuori N530 | <<locked>> | 84% | 54,984 psi | 88% | 2470 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 53,505 psi | 86% | 2448 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 55,419 psi | 89% | 2566 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 44,179 psi | 71% | 2467 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 53,084 psi | 85% | 2493 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 55,172 psi | 88% | 2516 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 54,360 psi | 87% | 2579 fps | 98.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 35,752 psi | 57% | 2418 fps | 99.8% |
| Winchester StaBALL Match | <<locked>> | 86% | 53,896 psi | 86% | 2503 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% | 49,676 psi | 80% | 2333 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 42,134 psi | 68% | 2274 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 49,516 psi | 79% | 2411 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 41,684 psi | 67% | 2264 fps | 95.5% |
| Accurate 3100 | <<locked>> | 94% | 33,852 psi | 54% | 2224 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 39,900 psi | 64% | 2274 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 29,211 psi | 47% | 2126 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 45,934 psi | 74% | 2382 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 39,117 psi | 63% | 2254 fps | 98.8% |
| ADI AR 2209 | <<locked>> | 96% | 43,947 psi | 70% | 2411 fps | 95% |
| ADI Benchmark 8208 | <<locked>> | 80% | 48,109 psi | 77% | 2385 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 48,762 psi | 78% | 2359 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 41,901 psi | 67% | 2421 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,827 psi | 62% | 2274 fps | 99.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,582 psi | 67% | 2329 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 29,965 psi | 48% | 2142 fps | 95.5% |
| Alliant Reloder-17 | 54.8 gr | 80% | 33,446 psi | 54% | 2257 fps | 98.6% |
| Alliant Reloder-19 | <<locked>> | 98% | 45,788 psi | 73% | 2451 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 86% | 25,860 psi | 41% | 2064 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 90% | 31,386 psi | 50% | 2267 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 45,295 psi | 73% | 2392 fps | 99.4% |
| Bofors RP3 | <<locked>> | 80% | 38,334 psi | 61% | 2277 fps | 99.6% |
| Bofors RP7 | <<locked>> | 84% | 39,262 psi | 63% | 2254 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 49,748 psi | 80% | 2369 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 46,949 psi | 75% | 2405 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 52,214 psi | 84% | 2543 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 39,073 psi | 63% | 2280 fps | 97.9% |
| Hodgdon H414 | 57.6 gr | 86% | 38,885 psi | 62% | 2326 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 86% | 42,496 psi | 68% | 2346 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 46,398 psi | 74% | 2392 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 27,412 psi | 44% | 2057 fps | 96.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,438 psi | 68% | 2369 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 88% | 41,133 psi | 66% | 2395 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,498 psi | 42% | 1339 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,483 psi | 71% | 2346 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 46,238 psi | 74% | 2372 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,089 psi | 66% | 2280 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 80% | 43,453 psi | 70% | 2300 fps | 96.8% |
| IMR 4350 | <<locked>> | 88% | 39,494 psi | 63% | 2280 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 82% | 38,551 psi | 62% | 2238 fps | 95.3% |
| IMR 4831 | <<locked>> | 80% | 28,631 psi | 46% | 2096 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 42,612 psi | 68% | 2352 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 80% | 48,109 psi | 77% | 2385 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 45,165 psi | 72% | 2359 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 45,905 psi | 74% | 2323 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 40,915 psi | 66% | 2280 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 33,504 psi | 54% | 2146 fps | 95.3% |
| Lovex S070 | <<locked>> | 86% | 38,319 psi | 61% | 2264 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 44,918 psi | 72% | 2336 fps | 100% |
| Norma 202 | <<locked>> | 80% | 45,440 psi | 73% | 2339 fps | 100% |
| Norma 203B | <<locked>> | 80% | 40,930 psi | 66% | 2316 fps | 99.5% |
| Norma 204 | <<locked>> | 92% | 44,643 psi | 72% | 2408 fps | 95.2% |
| Norma MRP | <<locked>> | 96% | 39,175 psi | 63% | 2405 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 29,820 psi | 48% | 2133 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 40,596 psi | 65% | 2333 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 86% | 35,476 psi | 57% | 2264 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 47,950 psi | 77% | 2398 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 80% | 47,630 psi | 76% | 2415 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 51,735 psi | 83% | 2428 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,774 psi | 43% | 1371 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 39,552 psi | 63% | 2267 fps | 96.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 44,106 psi | 71% | 2425 fps | 99.6% |
| ReloadSwiss RS 60 | 54.8 gr | 80% | 35,636 psi | 57% | 2313 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 31,270 psi | 50% | 2195 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 33,591 psi | 54% | 2251 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 48,762 psi | 78% | 2362 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 42,612 psi | 68% | 2290 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 35,955 psi | 58% | 2224 fps | 99.2% |
| Rottweil R 904 | <<locked>> | 98% | 48,414 psi | 78% | 2438 fps | 95% |
| Rottweil R 905 | <<locked>> | 98% | 44,585 psi | 71% | 2434 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 84% | 39,262 psi | 63% | 2254 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 80% | 33,504 psi | 54% | 2146 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 45,165 psi | 72% | 2359 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 40,915 psi | 66% | 2280 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 86% | 38,319 psi | 61% | 2264 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,115 psi | 60% | 2274 fps | 98.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 46,195 psi | 74% | 2375 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 44,425 psi | 71% | 2356 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 46,398 psi | 74% | 2287 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,638 psi | 62% | 2172 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 37,173 psi | 60% | 2188 fps | 95.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 44,179 psi | 71% | 2431 fps | 95.6% |
| Somchem S321 | <<locked>> | 80% | 52,083 psi | 84% | 2454 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 45,890 psi | 74% | 2287 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 46,137 psi | 74% | 2372 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 36,883 psi | 59% | 2231 fps | 99.2% |
| Somchem S365 | <<locked>> | 80% | 26,643 psi | 43% | 2090 fps | 97.6% |
| Somchem S385 | <<locked>> | 94% | 39,465 psi | 63% | 2320 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 52,344 psi | 84% | 2329 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 46,833 psi | 75% | 2277 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 42,496 psi | 68% | 2270 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 42,873 psi | 69% | 2280 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,998 psi | 56% | 2172 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 31,198 psi | 50% | 2136 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 48,283 psi | 77% | 2382 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 41,205 psi | 66% | 2274 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 30,574 psi | 49% | 2136 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 86% | 27,615 psi | 44% | 2129 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,995 psi | 50% | 2116 fps | 97.9% |
| Winchester 748 | <<locked>> | 80% | 47,993 psi | 77% | 2421 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 38,885 psi | 62% | 2326 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 90% | 25,701 psi | 41% | 2126 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 43,874 psi | 70% | 2359 fps | 99.9% |
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 120 powders for .338 Win Mag. loaded with the .338 | 250gr | Peregrine VRG-3. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,635 fps; across all powders the maximum-charge window runs from 1,503 fps to 2,635 fps. Accurate 3100 gives the best case fill at 100 %, and 120 of the 120 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 250.0 gr projectile in 0.338" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, 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. Alliant Reloder-17, ReloadSwiss RS 60, Hodgdon H414 rank at the top here: for .338 Win Mag. with the .338 | 250gr | Peregrine VRG-3 they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2213, Bofors RP15 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.