Load Specifications
Bullet Manufacturer:Nosler
Bullet Weight:250 gr
Bullet Diameter:0.338"
Bullet Length:<<locked>>
Caliber:.338 Blaser Mag. load data
Case Length (l3):2.5078"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:92.6 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:25.6"
Max. allowed Pressure:60,916 psi
Recommended Twist Rate:1:12.5
Load data in caliber .338 Blaser Mag. with .338 | 250gr | Nosler AccuBond 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 70, Hodgdon Superformance and Alliant Reloder-16.
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: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 84% | 52,736 psi | 87% | 2461 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 54,636 psi | 90% | 2523 fps | 98.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,760 psi | 77% | 2507 fps | 99.1% |
| Accurate 4064 | <<locked>> | 86% | 53,127 psi | 87% | 2510 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 52,794 psi | 87% | 2605 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 52,649 psi | 86% | 2536 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 53,766 psi | 88% | 2543 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 54,157 psi | 89% | 2641 fps | 98.3% |
| ADI Benchmark 8208 | <<locked>> | 82% | 54,839 psi | 90% | 2530 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 52,286 psi | 86% | 2651 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 54,128 psi | 89% | 2562 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 54,520 psi | 90% | 2582 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 53,896 psi | 88% | 2654 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 55,071 psi | 90% | 2684 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 53,214 psi | 87% | 2631 fps | 98.2% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 46,920 psi | 77% | 2582 fps | 97.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,150 psi | 72% | 2530 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,740 psi | 64% | 2454 fps | 98.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,821 psi | 82% | 2697 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 52,228 psi | 86% | 2552 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 42,960 psi | 71% | 2510 fps | 96.1% |
| Bofors RP3 | <<locked>> | 88% | 54,621 psi | 90% | 2575 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 46,920 psi | 77% | 2582 fps | 97.3% |
| Bofors RP7 | <<locked>> | 92% | 54,520 psi | 90% | 2562 fps | 99% |
| Hodgdon BL-C2 | <<locked>> | 82% | 54,433 psi | 89% | 2562 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 51,953 psi | 85% | 2546 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 92% | 51,851 psi | 85% | 2605 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 90% | 52,214 psi | 86% | 2566 fps | 98.3% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 52,025 psi | 85% | 2585 fps | 96% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 51,024 psi | 84% | 2569 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 82% | 53,243 psi | 87% | 2543 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 53,925 psi | 89% | 2582 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 52,939 psi | 87% | 2579 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 51,779 psi | 85% | 2638 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,158 psi | 59% | 1552 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 54,244 psi | 89% | 2546 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 53,650 psi | 88% | 2520 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 53,156 psi | 87% | 2523 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 52,852 psi | 87% | 2510 fps | 99.1% |
| IMR 4350 | <<locked>> | 96% | 55,042 psi | 90% | 2592 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 90% | 52,866 psi | 87% | 2539 fps | 99.1% |
| IMR 4831 | <<locked>> | 96% | 53,432 psi | 88% | 2598 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 52,489 psi | 86% | 2559 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 53,896 psi | 88% | 2575 fps | 96.6% |
| IMR 8208 XBR | <<locked>> | 82% | 54,839 psi | 90% | 2530 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 52,779 psi | 87% | 2513 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 52,112 psi | 86% | 2467 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 53,374 psi | 88% | 2520 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 52,750 psi | 87% | 2539 fps | 99.8% |
| Lovex S070 | <<locked>> | 94% | 53,534 psi | 88% | 2572 fps | 99.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,870 psi | 64% | 2372 fps | 97.7% |
| Norma 201 | <<locked>> | 84% | 54,737 psi | 90% | 2526 fps | 100% |
| Norma 202 | <<locked>> | 82% | 52,141 psi | 86% | 2484 fps | 100% |
| Norma 203B | <<locked>> | 86% | 53,795 psi | 88% | 2569 fps | 100% |
| Norma 204 | <<locked>> | 94% | 52,040 psi | 85% | 2592 fps | 97.8% |
| Norma MRPᴾ | <<locked>> | 100% | 49,400 psi | 81% | 2654 fps | 98.9% |
| Norma URP | <<locked>> | 94% | 51,851 psi | 85% | 2592 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 54,288 psi | 89% | 2595 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 54,012 psi | 89% | 2644 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 40,582 psi | 67% | 2448 fps | 96% |
| Ramshot TAC | <<locked>> | 82% | 54,969 psi | 90% | 2562 fps | 99.9% |
| Ramshot Wild Boar | <<locked>> | 82% | 54,795 psi | 90% | 2572 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,651 psi | 60% | 1588 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 52,054 psi | 85% | 2530 fps | 99.4% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 51,648 psi | 85% | 2595 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 54,665 psi | 90% | 2674 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 52,663 psi | 86% | 2628 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 51,517 psi | 85% | 2654 fps | 100% |
| Rottweil R 902 | <<locked>> | 84% | 52,127 psi | 86% | 2484 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 54,781 psi | 90% | 2569 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 52,736 psi | 87% | 2566 fps | 97% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 52,286 psi | 86% | 2618 fps | 98.2% |
| Rottweil R 907 | <<locked>> | 92% | 54,520 psi | 90% | 2562 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 92% | 52,750 psi | 87% | 2539 fps | 99.8% |
| Shooters World Match Rifle | <<locked>> | 82% | 52,779 psi | 87% | 2513 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 53,374 psi | 88% | 2520 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 53,534 psi | 88% | 2572 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 52,837 psi | 87% | 2582 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 53,693 psi | 88% | 2543 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 54,433 psi | 89% | 2559 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 52,649 psi | 86% | 2418 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 53,243 psi | 87% | 2425 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 52,446 psi | 86% | 2493 fps | 99.1% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 51,808 psi | 85% | 2615 fps | 98.2% |
| Somchem S335 | <<locked>> | 82% | 52,330 psi | 86% | 2421 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 53,171 psi | 87% | 2526 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 54,868 psi | 90% | 2566 fps | 100% |
| Somchem S361 | <<locked>> | 98% | 54,186 psi | 89% | 2559 fps | 96.3% |
| Somchem S365 | <<locked>> | 98% | 53,679 psi | 88% | 2635 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 53,040 psi | 87% | 2598 fps | 98.9% |
| Vihtavuori N133 | <<locked>> | 82% | 53,055 psi | 87% | 2405 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 52,098 psi | 86% | 2444 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 52,663 psi | 86% | 2464 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 52,794 psi | 87% | 2500 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 54,056 psi | 89% | 2585 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 45,629 psi | 75% | 2474 fps | 97.3% |
| Vihtavuori N540 | <<locked>> | 86% | 54,070 psi | 89% | 2507 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 53,287 psi | 87% | 2595 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 49,110 psi | 81% | 2595 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 50,111 psi | 82% | 2644 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 53,824 psi | 88% | 2559 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 52,112 psi | 86% | 2608 fps | 99.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,697 psi | 65% | 2572 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 54,505 psi | 89% | 2566 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 49,632 psi | 81% | 2539 fps | 97.5% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 46,441 psi | 76% | 2375 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 45,063 psi | 74% | 2379 fps | 97.3% |
| Accurate 3100 | <<locked>> | 88% | 31,227 psi | 51% | 2215 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 43,961 psi | 72% | 2382 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,793 psi | 54% | 2257 fps | 97.6% |
| ADI AR 2206H | <<locked>> | 80% | 49,429 psi | 81% | 2490 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 42,105 psi | 69% | 2362 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 92% | 42,003 psi | 69% | 2441 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,532 psi | 85% | 2487 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,687 psi | 75% | 2549 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,119 psi | 69% | 2382 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,049 psi | 74% | 2441 fps | 99.9% |
| Alliant Reloder-16 | 54 gr | 80% | 32,779 psi | 54% | 2270 fps | 97.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 36,709 psi | 60% | 2385 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 92% | 41,510 psi | 68% | 2438 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 96% | 41,249 psi | 68% | 2477 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 23,844 psi | 39% | 2054 fps | 95.1% |
| Alliant Reloder-25 | <<locked>> | 94% | 32,300 psi | 53% | 2300 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 84% | 28,601 psi | 47% | 2251 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,037 psi | 81% | 2507 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 40,480 psi | 66% | 2461 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 42,061 psi | 69% | 2392 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 41,249 psi | 68% | 2477 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 37,565 psi | 62% | 2277 fps | 95.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 51,097 psi | 84% | 2516 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,627 psi | 70% | 2398 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 80% | 34,969 psi | 57% | 2300 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 82% | 40,524 psi | 67% | 2369 fps | 95.7% |
| Hodgdon H4831 | <<locked>> | 98% | 48,689 psi | 80% | 2533 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 98% | 47,805 psi | 78% | 2520 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 49,966 psi | 82% | 2497 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,211 psi | 50% | 2178 fps | 98.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,282 psi | 76% | 2484 fps | 100% |
| Hodgdon Superformance | 63 gr | 82% | 36,434 psi | 60% | 2359 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,948 psi | 44% | 1385 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,993 psi | 79% | 2457 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 50,430 psi | 83% | 2477 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,266 psi | 73% | 2388 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,659 psi | 77% | 2415 fps | 98.3% |
| IMR 4350 | <<locked>> | 84% | 37,898 psi | 62% | 2306 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 39,044 psi | 64% | 2306 fps | 96.5% |
| IMR 4831 | <<locked>> | 80% | 31,865 psi | 52% | 2221 fps | 97.4% |
| IMR 4895 | <<locked>> | 80% | 46,195 psi | 76% | 2467 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 47,761 psi | 78% | 2484 fps | 95.2% |
| IMR 8208 XBR | <<locked>> | 80% | 51,532 psi | 85% | 2487 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 49,226 psi | 81% | 2464 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,921 psi | 80% | 2425 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 44,324 psi | 73% | 2388 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 36,492 psi | 60% | 2260 fps | 97.3% |
| Lovex S070 | <<locked>> | 80% | 34,679 psi | 57% | 2241 fps | 95.5% |
| Lovex S071 | <<locked>> | 94% | 32,155 psi | 53% | 2238 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 48,443 psi | 80% | 2441 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,921 psi | 80% | 2438 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,425 psi | 73% | 2431 fps | 100% |
| Norma 204 | <<locked>> | 88% | 42,598 psi | 70% | 2434 fps | 95.7% |
| Norma MRP | <<locked>> | 90% | 35,433 psi | 58% | 2388 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 32,953 psi | 54% | 2257 fps | 97.5% |
| Ramshot Big Game | <<locked>> | 80% | 44,396 psi | 73% | 2451 fps | 100% |
| Ramshot Hunter | <<locked>> | 80% | 32,024 psi | 53% | 2244 fps | 95.3% |
| Ramshot Magnum | <<locked>> | 98% | 37,956 psi | 62% | 2392 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 51,488 psi | 85% | 2513 fps | 99.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,271 psi | 84% | 2523 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,296 psi | 45% | 1417 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,946 psi | 71% | 2385 fps | 98.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,109 psi | 79% | 2543 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,044 psi | 64% | 2434 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,489 psi | 53% | 2277 fps | 97.2% |
| ReloadSwiss RS 70 | 59.1 gr | 80% | 32,227 psi | 53% | 2280 fps | 96.4% |
| Rottweil R 902 | <<locked>> | 80% | 46,340 psi | 76% | 2402 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 39,624 psi | 65% | 2343 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 94% | 46,340 psi | 76% | 2467 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 92% | 40,234 psi | 66% | 2418 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 37,565 psi | 62% | 2277 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,492 psi | 60% | 2260 fps | 97.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,226 psi | 81% | 2464 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,324 psi | 73% | 2388 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 34,679 psi | 57% | 2241 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,538 psi | 67% | 2392 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,169 psi | 82% | 2493 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,863 psi | 79% | 2464 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,545 psi | 81% | 2379 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,582 psi | 68% | 2267 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 35,766 psi | 59% | 2211 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 39,871 psi | 65% | 2411 fps | 95.4% |
| Somchem S335 | <<locked>> | 80% | 49,182 psi | 81% | 2382 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,951 psi | 82% | 2484 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 40,219 psi | 66% | 2343 fps | 99.9% |
| Somchem S361 | <<locked>> | 96% | 50,923 psi | 84% | 2513 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 29,602 psi | 49% | 2221 fps | 99.3% |
| Somchem S385 | <<locked>> | 88% | 35,795 psi | 59% | 2303 fps | 95% |
| Vihtavuori N133 | <<locked>> | 80% | 50,009 psi | 82% | 2365 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,064 psi | 76% | 2365 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,369 psi | 76% | 2379 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,305 psi | 63% | 2283 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 34,316 psi | 56% | 2257 fps | 97.8% |
| Vihtavuori N165 | <<locked>> | 94% | 37,550 psi | 62% | 2326 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 44,643 psi | 73% | 2379 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,808 psi | 56% | 2260 fps | 97.5% |
| Vihtavuori N555 | <<locked>> | 80% | 25,672 psi | 42% | 2123 fps | 95.4% |
| Vihtavuori N560 | <<locked>> | 98% | 47,007 psi | 77% | 2592 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,866 psi | 56% | 2234 fps | 99.3% |
| Winchester 760 | <<locked>> | 80% | 34,969 psi | 57% | 2300 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 84% | 23,757 psi | 39% | 2123 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,805 psi | 78% | 2474 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 40,393 psi | 66% | 2385 fps | 95.1% |
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 105 powders for .338 Blaser Mag. loaded with the .338 | 250gr | Nosler AccuBond. Alliant Reloder-26 delivers the highest muzzle velocity at 2,697 fps; across all powders the maximum-charge window runs from 1,552 fps to 2,697 fps. Accurate 3100 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 (420 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 250.0 gr projectile in 0.338" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Reloder-19 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 70, Hodgdon Superformance, Alliant Reloder-16 rank at the top here: for .338 Blaser Mag. with the .338 | 250gr | Nosler AccuBond 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.