Load Specifications
Load data in caliber .338 Blaser Mag. with .338 | 250gr | Barnes Banded Solid bullet and 102 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-26 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.
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: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 82% | 51,895 psi | 85% | 2461 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 53,055 psi | 87% | 2523 fps | 98.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 49,530 psi | 81% | 2562 fps | 99.6% |
| Accurate 4064 | <<locked>> | 84% | 52,185 psi | 86% | 2513 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 52,025 psi | 85% | 2608 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 51,082 psi | 84% | 2684 fps | 96% |
| ADI AR 2206H | <<locked>> | 82% | 54,882 psi | 90% | 2582 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 52,504 psi | 86% | 2539 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 53,084 psi | 87% | 2648 fps | 98.4% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 50,923 psi | 84% | 2641 fps | 96.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 54,868 psi | 90% | 2703 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 52,953 psi | 87% | 2562 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 53,301 psi | 88% | 2582 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 53,084 psi | 87% | 2661 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 53,925 psi | 89% | 2680 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 52,286 psi | 86% | 2638 fps | 98.4% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 49,356 psi | 81% | 2641 fps | 98.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 46,514 psi | 76% | 2582 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,741 psi | 67% | 2513 fps | 99% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 52,910 psi | 87% | 2756 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 54,578 psi | 90% | 2602 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 45,295 psi | 74% | 2569 fps | 97.1% |
| Bofors RP3 | <<locked>> | 86% | 53,548 psi | 88% | 2575 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 49,356 psi | 81% | 2641 fps | 98.1% |
| Bofors RP7 | <<locked>> | 90% | 53,200 psi | 87% | 2562 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 86% | 54,143 psi | 89% | 2595 fps | 100% |
| Hodgdon H414 | <<locked>> | 92% | 54,317 psi | 89% | 2654 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 90% | 54,665 psi | 90% | 2621 fps | 98.8% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 54,375 psi | 89% | 2641 fps | 96.9% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 53,461 psi | 88% | 2628 fps | 96.7% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 53,055 psi | 87% | 2585 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 51,750 psi | 85% | 2575 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 39,900 psi | 66% | 2533 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 92% | 54,302 psi | 89% | 2694 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,260 psi | 60% | 1572 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 53,040 psi | 87% | 2543 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 52,011 psi | 85% | 2523 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 54,694 psi | 90% | 2556 fps | 99.5% |
| IMR 4350 | <<locked>> | 94% | 53,954 psi | 89% | 2595 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 90% | 55,027 psi | 90% | 2589 fps | 99.5% |
| IMR 4831 | <<locked>> | 94% | 52,562 psi | 86% | 2602 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 54,694 psi | 90% | 2608 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 52,794 psi | 87% | 2582 fps | 96.7% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 48,327 psi | 79% | 2612 fps | 96.3% |
| Lovex D073.6 | <<locked>> | 82% | 55,056 psi | 90% | 2556 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 53,722 psi | 88% | 2507 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 52,083 psi | 86% | 2516 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 54,694 psi | 90% | 2582 fps | 99.9% |
| Lovex S070 | <<locked>> | 92% | 52,692 psi | 87% | 2579 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 41,089 psi | 67% | 2428 fps | 98.4% |
| Norma 201 | <<locked>> | 82% | 53,621 psi | 88% | 2526 fps | 100% |
| Norma 202 | <<locked>> | 82% | 54,215 psi | 89% | 2523 fps | 100% |
| Norma 203B | <<locked>> | 84% | 52,591 psi | 86% | 2569 fps | 100% |
| Norma 204 | <<locked>> | 94% | 54,549 psi | 90% | 2644 fps | 98.5% |
| Norma MRPᴾ | <<locked>> | 100% | 52,098 psi | 86% | 2713 fps | 99.5% |
| Norma URP | <<locked>> | 94% | 54,462 psi | 89% | 2641 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 53,113 psi | 87% | 2595 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 48,283 psi | 79% | 2621 fps | 96.7% |
| Ramshot Hunter | <<locked>> | 94% | 53,214 psi | 87% | 2648 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 42,873 psi | 70% | 2510 fps | 97.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,956 psi | 61% | 1611 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 54,244 psi | 89% | 2582 fps | 99.7% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 54,056 psi | 89% | 2641 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 53,592 psi | 88% | 2674 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 51,764 psi | 85% | 2631 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 54,114 psi | 89% | 2707 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 39,508 psi | 65% | 2523 fps | 97.1% |
| Rottweil R 902 | <<locked>> | 84% | 54,128 psi | 89% | 2526 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 53,664 psi | 88% | 2572 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 54,926 psi | 90% | 2618 fps | 97.7% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 54,839 psi | 90% | 2671 fps | 98.8% |
| Rottweil R 907 | <<locked>> | 90% | 53,200 psi | 87% | 2562 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 92% | 54,694 psi | 90% | 2582 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 82% | 55,056 psi | 90% | 2556 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 52,083 psi | 86% | 2516 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 52,692 psi | 87% | 2579 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 51,779 psi | 85% | 2582 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 53,171 psi | 87% | 2556 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 54,505 psi | 89% | 2461 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 55,114 psi | 90% | 2464 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 54,534 psi | 90% | 2543 fps | 99.5% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 54,346 psi | 89% | 2667 fps | 98.8% |
| Somchem S335 | <<locked>> | 82% | 54,273 psi | 89% | 2461 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 53,751 psi | 88% | 2569 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 53,113 psi | 87% | 2566 fps | 96.5% |
| Somchem S365 | <<locked>> | 96% | 53,185 psi | 87% | 2641 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 52,112 psi | 86% | 2602 fps | 99% |
| Vihtavuori N133 | <<locked>> | 82% | 54,955 psi | 90% | 2441 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 54,404 psi | 89% | 2487 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 54,578 psi | 90% | 2503 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 54,926 psi | 90% | 2543 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 53,200 psi | 87% | 2589 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 48,022 psi | 79% | 2530 fps | 98.1% |
| Vihtavuori N540 | <<locked>> | 84% | 52,750 psi | 87% | 2503 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 52,170 psi | 86% | 2595 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 52,141 psi | 86% | 2651 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 52,663 psi | 86% | 2703 fps | 97% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 52,765 psi | 87% | 2562 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 54,563 psi | 90% | 2661 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,756 psi | 69% | 2628 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 53,171 psi | 87% | 2562 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 52,069 psi | 85% | 2592 fps | 98.2% |
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% | 48,486 psi | 80% | 2418 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,659 psi | 77% | 2425 fps | 97.9% |
| Accurate 3100 | <<locked>> | 86% | 30,821 psi | 51% | 2218 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 45,948 psi | 75% | 2425 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,577 psi | 57% | 2310 fps | 98.3% |
| Accurate MAGPRO | <<locked>> | 98% | 47,747 psi | 78% | 2631 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 51,430 psi | 84% | 2536 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 43,743 psi | 72% | 2405 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 90% | 41,205 psi | 68% | 2441 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 96% | 44,512 psi | 73% | 2530 fps | 95.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 47,688 psi | 78% | 2598 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,063 psi | 72% | 2428 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,992 psi | 77% | 2487 fps | 100% |
| Alliant Reloder-16 | 56.4 gr | 80% | 34,200 psi | 56% | 2320 fps | 98.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,290 psi | 63% | 2431 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 90% | 40,625 psi | 67% | 2434 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 92% | 38,029 psi | 62% | 2428 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 24,918 psi | 41% | 2103 fps | 96.3% |
| Alliant Reloder-25 | <<locked>> | 90% | 29,979 psi | 49% | 2254 fps | 95.2% |
| Alliant Reloder-26 | 63.8 gr | 82% | 28,123 psi | 46% | 2251 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,995 psi | 84% | 2552 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 39,856 psi | 65% | 2467 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 43,990 psi | 72% | 2434 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 38,029 psi | 62% | 2428 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 39,059 psi | 64% | 2323 fps | 96.3% |
| Hodgdon H380 | <<locked>> | 80% | 44,628 psi | 73% | 2448 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 80% | 36,637 psi | 60% | 2352 fps | 96.4% |
| Hodgdon H4350 | <<locked>> | 80% | 39,653 psi | 65% | 2369 fps | 95.8% |
| Hodgdon H4831 | <<locked>> | 96% | 47,718 psi | 78% | 2536 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 96% | 46,673 psi | 77% | 2520 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,662 psi | 52% | 2224 fps | 98.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 48,457 psi | 80% | 2530 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 37,420 psi | 61% | 2477 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 35,578 psi | 58% | 2356 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,050 psi | 44% | 1401 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,719 psi | 82% | 2497 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,006 psi | 76% | 2434 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,341 psi | 79% | 2461 fps | 98.8% |
| IMR 4350 | <<locked>> | 80% | 34,867 psi | 57% | 2260 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,480 psi | 66% | 2352 fps | 97.2% |
| IMR 4831 | <<locked>> | 80% | 33,402 psi | 55% | 2267 fps | 98.1% |
| IMR 4895 | <<locked>> | 80% | 48,182 psi | 79% | 2513 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 46,818 psi | 77% | 2487 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 98% | 45,165 psi | 74% | 2556 fps | 95.5% |
| Lovex D073.6 | <<locked>> | 80% | 51,532 psi | 85% | 2510 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,589 psi | 83% | 2464 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 46,108 psi | 76% | 2431 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,971 psi | 62% | 2306 fps | 97.9% |
| Lovex S070 | <<locked>> | 80% | 36,303 psi | 60% | 2290 fps | 96.4% |
| Lovex S071 | <<locked>> | 90% | 29,994 psi | 49% | 2198 fps | 95% |
| Norma 201 | <<locked>> | 80% | 50,270 psi | 83% | 2480 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,995 psi | 84% | 2480 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,340 psi | 76% | 2477 fps | 100% |
| Norma 204 | <<locked>> | 84% | 39,015 psi | 64% | 2382 fps | 95% |
| Norma MRP | <<locked>> | 88% | 34,867 psi | 57% | 2392 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 34,664 psi | 57% | 2306 fps | 98.2% |
| Ramshot Big Game | <<locked>> | 80% | 46,398 psi | 76% | 2497 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 45,005 psi | 74% | 2562 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 33,591 psi | 55% | 2293 fps | 96.2% |
| Ramshot Magnum | <<locked>> | 96% | 37,159 psi | 61% | 2395 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,557 psi | 45% | 1437 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,585 psi | 73% | 2431 fps | 98.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 50,488 psi | 83% | 2592 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 40,727 psi | 67% | 2477 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,272 psi | 56% | 2326 fps | 98% |
| ReloadSwiss RS 70 | 61.7 gr | 80% | 33,634 psi | 55% | 2333 fps | 97.3% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 36,796 psi | 60% | 2461 fps | 96% |
| Rottweil R 902 | <<locked>> | 80% | 47,921 psi | 79% | 2441 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,568 psi | 68% | 2392 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 45,629 psi | 75% | 2474 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 90% | 39,508 psi | 65% | 2418 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 39,059 psi | 64% | 2323 fps | 96.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,971 psi | 62% | 2306 fps | 97.9% |
| Shooters World Match Rifle | <<locked>> | 80% | 51,532 psi | 85% | 2510 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 46,108 psi | 76% | 2431 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 36,303 psi | 60% | 2290 fps | 96.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,496 psi | 70% | 2438 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,908 psi | 82% | 2510 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,416 psi | 84% | 2421 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,294 psi | 71% | 2306 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 37,188 psi | 61% | 2257 fps | 96.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 39,131 psi | 64% | 2415 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 50,908 psi | 84% | 2418 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 41,901 psi | 69% | 2388 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 46,514 psi | 76% | 2464 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 31,183 psi | 51% | 2270 fps | 99.7% |
| Somchem S385 | <<locked>> | 86% | 35,331 psi | 58% | 2306 fps | 95.2% |
| Vihtavuori N133 | <<locked>> | 80% | 51,924 psi | 85% | 2405 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 48,124 psi | 79% | 2408 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,312 psi | 79% | 2421 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,074 psi | 66% | 2326 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 36,027 psi | 59% | 2303 fps | 98.5% |
| Vihtavuori N165 | <<locked>> | 92% | 37,057 psi | 61% | 2336 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 46,615 psi | 77% | 2421 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,534 psi | 58% | 2310 fps | 98.2% |
| Vihtavuori N555 | <<locked>> | 80% | 27,108 psi | 45% | 2172 fps | 96.4% |
| Vihtavuori N560 | <<locked>> | 96% | 46,137 psi | 76% | 2595 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,230 psi | 58% | 2280 fps | 99.7% |
| Winchester 760 | <<locked>> | 80% | 36,782 psi | 60% | 2356 fps | 96.4% |
| Winchester StaBALL HD | <<locked>> | 82% | 23,409 psi | 38% | 2126 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 49,821 psi | 82% | 2516 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 39,682 psi | 65% | 2388 fps | 95.3% |
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 108 powders for .338 Blaser Mag. loaded with the .338 | 250gr | Barnes Banded Solid. Alliant Reloder-26 delivers the highest muzzle velocity at 2,756 fps; across all powders the maximum-charge window runs from 1,572 fps to 2,756 fps. Accurate 3100 gives the best case fill at 100 %, and 108 of the 108 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 250.0 gr projectile in 0.338" calls for a 1:14.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2213 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, Alliant Reloder-26, Alliant Reloder-16 rank at the top here: for .338 Blaser Mag. with the .338 | 250gr | Barnes Banded Solid they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, ADI AR 2225, Baschieri & Pellagri 109 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.