Load Specifications
Bullet Manufacturer:Peregrine
Bullet Weight:231 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:1:12.0
Load data in caliber .338 Win Mag. with .338 | 231gr | Peregrine VLR-5 bullet and 104 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, Alliant Reloder-17 and ReloadSwiss RS 60.
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% | 55,317 psi | 89% | 2500 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 53,722 psi | 86% | 2526 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 53,113 psi | 85% | 2520 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 55,695 psi | 89% | 2585 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 53,490 psi | 86% | 2526 fps | 97% |
| Accurate 4064 | <<locked>> | 92% | 53,272 psi | 85% | 2562 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 52,939 psi | 85% | 2641 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 88% | 54,563 psi | 87% | 2598 fps | 100% |
| ADI AR 2208 | <<locked>> | 94% | 55,709 psi | 89% | 2598 fps | 99.9% |
| ADI Benchmark 8208 | <<locked>> | 86% | 53,708 psi | 86% | 2552 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 54,186 psi | 87% | 2526 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 55,680 psi | 89% | 2651 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 54,056 psi | 87% | 2707 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 55,405 psi | 89% | 2618 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 55,172 psi | 88% | 2500 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 56,101 psi | 90% | 2638 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 51,372 psi | 82% | 2644 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 98% | 56,188 psi | 90% | 2736 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,245 psi | 58% | 2402 fps | 98.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 40,190 psi | 64% | 2539 fps | 97.3% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 54,418 psi | 87% | 2615 fps | 99.7% |
| Bofors RP3 | <<locked>> | 94% | 55,738 psi | 89% | 2631 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 56,028 psi | 90% | 2602 fps | 97.7% |
| Hodgdon Benchmark | <<locked>> | 86% | 55,695 psi | 89% | 2536 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 52,707 psi | 85% | 2582 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 54,868 psi | 88% | 2674 fps | 99.9% |
| Hodgdon H322 | <<locked>> | 82% | 54,433 psi | 87% | 2543 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 55,521 psi | 89% | 2572 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 53,272 psi | 85% | 2595 fps | 99.4% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 56,173 psi | 90% | 2690 fps | 98.4% |
| Hodgdon H4350 | <<locked>> | 96% | 53,795 psi | 86% | 2608 fps | 96.7% |
| Hodgdon H4895 | <<locked>> | 88% | 55,143 psi | 88% | 2608 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 47,514 psi | 76% | 2533 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 54,186 psi | 87% | 2638 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 53,476 psi | 86% | 2677 fps | 97.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,114 psi | 56% | 1549 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 53,026 psi | 85% | 2562 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 54,940 psi | 88% | 2589 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 55,027 psi | 88% | 2579 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 90% | 55,245 psi | 89% | 2566 fps | 98% |
| IMR 4198 | <<locked>> | 82% | 55,637 psi | 89% | 2464 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 52,765 psi | 85% | 2579 fps | 97.2% |
| IMR 4451 Enduron | <<locked>> | 96% | 54,868 psi | 88% | 2589 fps | 97.9% |
| IMR 4831ᴾ | <<locked>> | 100% | 50,227 psi | 81% | 2589 fps | 99.4% |
| IMR 4895 | <<locked>> | 90% | 53,925 psi | 86% | 2618 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 53,708 psi | 86% | 2552 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 53,606 psi | 86% | 2539 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 53,940 psi | 86% | 2572 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 54,520 psi | 87% | 2533 fps | 100% |
| Lovex S062 | <<locked>> | 92% | 54,752 psi | 88% | 2579 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 53,635 psi | 86% | 2579 fps | 98.9% |
| Lovex S070ᴾ | <<locked>> | 100% | 54,520 psi | 87% | 2608 fps | 98.2% |
| Norma 201 | <<locked>> | 88% | 53,229 psi | 85% | 2546 fps | 100% |
| Norma 202 | <<locked>> | 88% | 53,853 psi | 86% | 2549 fps | 100% |
| Norma 203B | <<locked>> | 92% | 55,259 psi | 89% | 2628 fps | 100% |
| Norma 204ᴾ | <<locked>> | 100% | 53,461 psi | 86% | 2625 fps | 95.9% |
| Norma URPᴾ | <<locked>> | 100% | 52,344 psi | 84% | 2631 fps | 99.5% |
| Ramshot Big Game | <<locked>> | 92% | 55,796 psi | 89% | 2651 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 51,285 psi | 82% | 2631 fps | 98.3% |
| Ramshot TAC | <<locked>> | 86% | 53,969 psi | 87% | 2572 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 86% | 53,490 psi | 86% | 2589 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 84% | 54,810 psi | 88% | 2559 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,462 psi | 57% | 1585 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 53,272 psi | 85% | 2533 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 53,809 psi | 86% | 2582 fps | 98.4% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 52,678 psi | 84% | 2648 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 55,840 psi | 90% | 2730 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 52,475 psi | 84% | 2661 fps | 99.5% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 52,707 psi | 85% | 2687 fps | 99.3% |
| Rottweil R 901 | <<locked>> | 86% | 54,157 psi | 87% | 2526 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 53,577 psi | 86% | 2543 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 55,332 psi | 89% | 2618 fps | 100% |
| Rottweil R 907 | <<locked>> | 98% | 56,028 psi | 90% | 2602 fps | 97.7% |
| Shooters World Long Rifle | <<locked>> | 98% | 53,635 psi | 86% | 2579 fps | 98.9% |
| Shooters World Match Rifle | <<locked>> | 88% | 53,940 psi | 86% | 2572 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 54,752 psi | 88% | 2579 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 54,520 psi | 87% | 2608 fps | 98.2% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 53,911 psi | 86% | 2635 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 56,289 psi | 90% | 2523 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 55,898 psi | 90% | 2602 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 52,910 psi | 85% | 2572 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 55,259 psi | 89% | 2493 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 55,201 psi | 89% | 2490 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 54,128 psi | 87% | 2536 fps | 97.8% |
| Somchem S321 | <<locked>> | 84% | 54,766 psi | 88% | 2582 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 54,273 psi | 87% | 2490 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 55,535 psi | 89% | 2595 fps | 100% |
| Somchem S355 | <<locked>> | 96% | 55,970 psi | 90% | 2618 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 46,528 psi | 75% | 2582 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 54,853 psi | 88% | 2454 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 55,506 psi | 89% | 2477 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 53,403 psi | 86% | 2513 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 54,462 psi | 87% | 2530 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 53,882 psi | 86% | 2552 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 55,056 psi | 88% | 2631 fps | 99.7% |
| Vihtavuori N530 | <<locked>> | 86% | 54,172 psi | 87% | 2552 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 55,782 psi | 89% | 2569 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 53,925 psi | 86% | 2638 fps | 99.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,059 psi | 63% | 2467 fps | 98.2% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 55,579 psi | 89% | 2612 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 53,911 psi | 86% | 2598 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 52,823 psi | 85% | 2644 fps | 97.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 32,271 psi | 52% | 2388 fps | 97.8% |
| Winchester StaBALL Match | <<locked>> | 90% | 56,362 psi | 90% | 2628 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% | 46,035 psi | 74% | 2375 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 50,067 psi | 80% | 2477 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 38,130 psi | 61% | 2303 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 45,397 psi | 73% | 2444 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 46,775 psi | 75% | 2425 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 36,114 psi | 58% | 2297 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 32,169 psi | 52% | 2277 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 42,351 psi | 68% | 2405 fps | 99.1% |
| ADI AR 2208 | <<locked>> | 80% | 36,013 psi | 58% | 2270 fps | 97.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 44,498 psi | 71% | 2415 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 80% | 44,353 psi | 71% | 2398 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 52,054 psi | 83% | 2598 fps | 100% |
| Alliant Power Pro 2000-MR | 54.4 gr | 80% | 38,261 psi | 61% | 2431 fps | 97.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,433 psi | 57% | 2290 fps | 98.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 51,895 psi | 83% | 2461 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,058 psi | 61% | 2346 fps | 97.8% |
| Alliant Reloder-16 | <<locked>> | 86% | 33,214 psi | 53% | 2297 fps | 95.6% |
| Alliant Reloder-17 | 53.6 gr | 80% | 30,414 psi | 49% | 2254 fps | 96.3% |
| Alliant Reloder-23 | <<locked>> | 94% | 30,023 psi | 48% | 2251 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 96% | 34,824 psi | 56% | 2418 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,495 psi | 67% | 2411 fps | 98.1% |
| Bofors RP3 | <<locked>> | 80% | 34,780 psi | 56% | 2290 fps | 98.4% |
| Bofors RP7 | <<locked>> | 90% | 43,613 psi | 70% | 2408 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,296 psi | 74% | 2405 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 42,844 psi | 69% | 2431 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 47,514 psi | 76% | 2566 fps | 99.5% |
| Hodgdon H322 | <<locked>> | 80% | 50,879 psi | 82% | 2497 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 51,808 psi | 83% | 2523 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 35,723 psi | 57% | 2293 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 92% | 43,047 psi | 69% | 2487 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 92% | 47,282 psi | 76% | 2507 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 42,728 psi | 69% | 2415 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 28,369 psi | 45% | 2152 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,667 psi | 62% | 2392 fps | 99.2% |
| Hodgdon Superformance | <<locked>> | 94% | 46,354 psi | 74% | 2562 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,063 psi | 42% | 1381 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,046 psi | 66% | 2372 fps | 99.2% |
| IMR 3031 | <<locked>> | 80% | 42,279 psi | 68% | 2411 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,797 psi | 61% | 2300 fps | 97.8% |
| IMR 4166 Enduron | <<locked>> | 82% | 43,033 psi | 69% | 2369 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 52,301 psi | 84% | 2425 fps | 100% |
| IMR 4350 | <<locked>> | 94% | 43,700 psi | 70% | 2434 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 88% | 42,757 psi | 69% | 2395 fps | 95.3% |
| IMR 4831 | <<locked>> | 86% | 31,531 psi | 51% | 2244 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 39,015 psi | 63% | 2375 fps | 98.6% |
| IMR 8208 XBR | <<locked>> | 80% | 44,498 psi | 71% | 2415 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 80% | 49,980 psi | 80% | 2490 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 41,176 psi | 66% | 2388 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 42,670 psi | 68% | 2349 fps | 99.1% |
| Lovex S062 | <<locked>> | 80% | 37,478 psi | 60% | 2303 fps | 99.1% |
| Lovex S065 | <<locked>> | 86% | 36,970 psi | 59% | 2293 fps | 95.3% |
| Lovex S070 | <<locked>> | 92% | 42,264 psi | 68% | 2415 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 41,365 psi | 66% | 2362 fps | 99.6% |
| Norma 202 | <<locked>> | 80% | 41,742 psi | 67% | 2372 fps | 100% |
| Norma 203B | <<locked>> | 80% | 37,449 psi | 60% | 2336 fps | 98.2% |
| Norma 204 | <<locked>> | 98% | 49,792 psi | 80% | 2569 fps | 95.1% |
| Norma URP | <<locked>> | 86% | 32,967 psi | 53% | 2283 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 36,854 psi | 59% | 2346 fps | 97.9% |
| Ramshot Hunter | <<locked>> | 92% | 39,407 psi | 63% | 2425 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 44,309 psi | 71% | 2421 fps | 97.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 43,700 psi | 70% | 2438 fps | 99.2% |
| Ramshot X-Terminator | <<locked>> | 80% | 47,892 psi | 77% | 2461 fps | 99.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,469 psi | 42% | 1417 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 49,922 psi | 80% | 2487 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 38,841 psi | 62% | 2329 fps | 95% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 39,900 psi | 64% | 2441 fps | 98.3% |
| ReloadSwiss RS 60 | 53.6 gr | 80% | 32,430 psi | 52% | 2316 fps | 99.2% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 34,548 psi | 55% | 2349 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 37,449 psi | 60% | 2411 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 45,034 psi | 72% | 2395 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 39,392 psi | 63% | 2320 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 80% | 32,547 psi | 52% | 2234 fps | 97.5% |
| Rottweil R 907 | <<locked>> | 90% | 43,613 psi | 70% | 2408 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 86% | 36,970 psi | 59% | 2293 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 41,176 psi | 66% | 2388 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 37,478 psi | 60% | 2303 fps | 99.1% |
| Shooters World SW4350 | <<locked>> | 92% | 42,264 psi | 68% | 2415 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,837 psi | 54% | 2287 fps | 97.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 52,852 psi | 85% | 2480 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 42,337 psi | 68% | 2392 fps | 97.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,930 psi | 66% | 2382 fps | 98.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 42,917 psi | 69% | 2320 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,505 psi | 57% | 2201 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 41,495 psi | 67% | 2343 fps | 95.1% |
| Somchem S321 | <<locked>> | 80% | 47,950 psi | 77% | 2487 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 42,496 psi | 68% | 2323 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 42,250 psi | 68% | 2395 fps | 99% |
| Somchem S355 | <<locked>> | 80% | 33,663 psi | 54% | 2247 fps | 97.6% |
| Somchem S365 | <<locked>> | 82% | 25,802 psi | 41% | 2136 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 48,617 psi | 78% | 2375 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 43,250 psi | 69% | 2316 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,667 psi | 62% | 2303 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,363 psi | 63% | 2310 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 31,865 psi | 51% | 2188 fps | 98.3% |
| Vihtavuori N160 | <<locked>> | 86% | 34,534 psi | 55% | 2287 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 44,570 psi | 71% | 2411 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 37,884 psi | 61% | 2303 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 33,823 psi | 54% | 2287 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 92% | 30,008 psi | 48% | 2267 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 28,427 psi | 46% | 2119 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 43,947 psi | 70% | 2451 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 43,279 psi | 69% | 2490 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 96% | 28,253 psi | 45% | 2264 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,263 psi | 65% | 2382 fps | 99.1% |
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 | 231gr | Peregrine VLR-5. Alliant Reloder-17 delivers the highest muzzle velocity at 2,736 fps; across all powders the maximum-charge window runs from 1,549 fps to 2,736 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 49–90 %, leaving at least 10 % headroom. The 231.0 gr projectile in 0.338" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, 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 Power Pro 2000-MR, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for .338 Win Mag. with the .338 | 231gr | Peregrine VLR-5 they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2209, Alliant Reloder-19, Alliant Reloder-22 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.