Load Specifications
Bullet Manufacturer:Rhino Bullets
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:1:15.0
Load data in caliber .338 Blaser Mag. with .338 | 250gr | Rhino Solid Shank bullet and 101 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% | 52,272 psi | 86% | 2467 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 53,534 psi | 88% | 2533 fps | 99% |
| Accurate 3100ᴾ | <<locked>> | 100% | 49,980 psi | 82% | 2572 fps | 99.6% |
| Accurate 4064 | <<locked>> | 84% | 52,547 psi | 86% | 2520 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 52,591 psi | 86% | 2618 fps | 100% |
| Accurate High Countryᴾ | <<locked>> | 100% | 54,549 psi | 90% | 2759 fps | 98.1% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 51,706 psi | 85% | 2700 fps | 96.2% |
| ADI AR 2208 | <<locked>> | 86% | 53,011 psi | 87% | 2552 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 53,722 psi | 88% | 2661 fps | 98.5% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 51,285 psi | 84% | 2651 fps | 97% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 51,605 psi | 85% | 2661 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 53,679 psi | 88% | 2657 fps | 98.6% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 53,679 psi | 88% | 2657 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 53,534 psi | 88% | 2572 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 53,650 psi | 88% | 2589 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 53,606 psi | 88% | 2671 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 54,447 psi | 89% | 2690 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 52,910 psi | 87% | 2651 fps | 98.5% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 49,734 psi | 82% | 2648 fps | 98.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 46,978 psi | 77% | 2589 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,075 psi | 67% | 2523 fps | 99.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 53,592 psi | 88% | 2769 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 54,824 psi | 90% | 2608 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 45,658 psi | 75% | 2579 fps | 97.3% |
| Bofors RP3 | <<locked>> | 86% | 54,114 psi | 89% | 2585 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 49,734 psi | 82% | 2648 fps | 98.2% |
| Bofors RP7 | <<locked>> | 90% | 53,693 psi | 88% | 2572 fps | 99.2% |
| Hodgdon H380 | <<locked>> | 86% | 54,679 psi | 90% | 2602 fps | 100% |
| Hodgdon H414 | <<locked>> | 92% | 54,839 psi | 90% | 2667 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 90% | 54,940 psi | 90% | 2628 fps | 98.9% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 55,042 psi | 90% | 2654 fps | 97.1% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 53,809 psi | 88% | 2635 fps | 96.8% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 53,592 psi | 88% | 2595 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 52,301 psi | 86% | 2585 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 40,248 psi | 66% | 2546 fps | 96.3% |
| Hodgdon Superformance | <<locked>> | 92% | 54,926 psi | 90% | 2707 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,260 psi | 60% | 1575 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 53,403 psi | 88% | 2552 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 52,359 psi | 86% | 2533 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 54,984 psi | 90% | 2566 fps | 99.5% |
| IMR 4350 | <<locked>> | 94% | 54,404 psi | 89% | 2605 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 88% | 52,156 psi | 86% | 2552 fps | 99.3% |
| IMR 4831 | <<locked>> | 94% | 53,069 psi | 87% | 2612 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 55,056 psi | 90% | 2615 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 53,403 psi | 88% | 2595 fps | 96.9% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 48,704 psi | 80% | 2621 fps | 96.5% |
| Lovex S060 | <<locked>> | 82% | 54,273 psi | 89% | 2520 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 52,649 psi | 86% | 2530 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 52,069 psi | 85% | 2549 fps | 99.8% |
| Lovex S070 | <<locked>> | 92% | 53,185 psi | 87% | 2589 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 41,742 psi | 69% | 2441 fps | 98.6% |
| Norma 201 | <<locked>> | 82% | 54,027 psi | 89% | 2536 fps | 100% |
| Norma 202 | <<locked>> | 82% | 54,549 psi | 90% | 2530 fps | 100% |
| Norma 203B | <<locked>> | 84% | 52,939 psi | 87% | 2575 fps | 100% |
| Norma 204 | <<locked>> | 94% | 54,969 psi | 90% | 2654 fps | 98.6% |
| Norma MRPᴾ | <<locked>> | 100% | 52,692 psi | 87% | 2726 fps | 99.5% |
| Norma URP | <<locked>> | 94% | 54,969 psi | 90% | 2654 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 53,432 psi | 88% | 2602 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 48,907 psi | 80% | 2638 fps | 96.9% |
| Ramshot Hunter | <<locked>> | 94% | 53,679 psi | 88% | 2657 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 43,395 psi | 71% | 2523 fps | 97.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,941 psi | 61% | 1614 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 54,520 psi | 90% | 2589 fps | 99.8% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 54,447 psi | 89% | 2651 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 54,143 psi | 89% | 2684 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 52,243 psi | 86% | 2641 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 54,563 psi | 90% | 2720 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 39,943 psi | 66% | 2539 fps | 97.4% |
| Rottweil R 902 | <<locked>> | 84% | 54,520 psi | 90% | 2536 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 54,244 psi | 89% | 2582 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 52,083 psi | 86% | 2582 fps | 97.3% |
| Rottweil R 905 | <<locked>> | 98% | 51,924 psi | 85% | 2635 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 90% | 53,693 psi | 88% | 2572 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 90% | 52,069 psi | 85% | 2549 fps | 99.8% |
| Shooters World Precision | <<locked>> | 84% | 52,649 psi | 86% | 2530 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 53,185 psi | 87% | 2589 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 52,286 psi | 86% | 2592 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 53,461 psi | 88% | 2566 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 54,868 psi | 90% | 2467 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 52,330 psi | 86% | 2431 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 54,984 psi | 90% | 2549 fps | 99.5% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 55,085 psi | 90% | 2680 fps | 98.9% |
| Somchem S335 | <<locked>> | 82% | 54,592 psi | 90% | 2470 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 54,317 psi | 89% | 2579 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 53,693 psi | 88% | 2579 fps | 96.7% |
| Somchem S365 | <<locked>> | 96% | 53,722 psi | 88% | 2651 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 52,576 psi | 86% | 2612 fps | 99.1% |
| Vihtavuori N135 | <<locked>> | 84% | 54,795 psi | 90% | 2493 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 51,706 psi | 85% | 2470 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 52,170 psi | 86% | 2510 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 53,708 psi | 88% | 2598 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 48,443 psi | 80% | 2539 fps | 98.2% |
| Vihtavuori N540 | <<locked>> | 84% | 53,287 psi | 87% | 2513 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 52,634 psi | 86% | 2605 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 52,634 psi | 86% | 2661 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 53,272 psi | 87% | 2717 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 53,185 psi | 87% | 2572 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 55,056 psi | 90% | 2671 fps | 99.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 42,293 psi | 69% | 2644 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 53,447 psi | 88% | 2572 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 52,678 psi | 86% | 2608 fps | 98.3% |
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% | 49,095 psi | 81% | 2428 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,123 psi | 77% | 2434 fps | 98% |
| Accurate 3100 | <<locked>> | 86% | 31,227 psi | 51% | 2228 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 46,514 psi | 76% | 2434 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,954 psi | 57% | 2320 fps | 98.5% |
| Accurate High Country | <<locked>> | 92% | 41,394 psi | 68% | 2536 fps | 95.1% |
| Accurate MAGPRO | <<locked>> | 98% | 48,312 psi | 79% | 2644 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 80% | 44,063 psi | 72% | 2415 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 38,986 psi | 64% | 2402 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 96% | 45,063 psi | 74% | 2543 fps | 95.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,051 psi | 79% | 2605 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 39,059 psi | 64% | 2405 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 39,059 psi | 64% | 2405 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,425 psi | 73% | 2438 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,355 psi | 78% | 2497 fps | 100% |
| Alliant Reloder-16 | 56.9 gr | 80% | 34,490 psi | 57% | 2329 fps | 98.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,740 psi | 64% | 2441 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 38,638 psi | 63% | 2398 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 92% | 38,406 psi | 63% | 2441 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 25,237 psi | 41% | 2116 fps | 96.5% |
| Alliant Reloder-25 | <<locked>> | 90% | 30,284 psi | 50% | 2267 fps | 95.4% |
| Alliant Reloder-26 | 64.4 gr | 82% | 28,442 psi | 47% | 2264 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 51,503 psi | 85% | 2562 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 40,277 psi | 66% | 2477 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 44,556 psi | 73% | 2448 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 38,406 psi | 63% | 2441 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 39,349 psi | 65% | 2333 fps | 96.5% |
| Hodgdon H380 | <<locked>> | 80% | 44,918 psi | 74% | 2457 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 80% | 36,898 psi | 61% | 2359 fps | 96.5% |
| Hodgdon H4350 | <<locked>> | 80% | 40,118 psi | 66% | 2379 fps | 96% |
| Hodgdon H4831 | <<locked>> | 96% | 48,138 psi | 79% | 2549 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 96% | 47,253 psi | 78% | 2533 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,966 psi | 52% | 2234 fps | 99.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 48,820 psi | 80% | 2536 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 37,884 psi | 62% | 2490 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 35,969 psi | 59% | 2369 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,122 psi | 45% | 1404 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,038 psi | 82% | 2507 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,354 psi | 76% | 2441 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,631 psi | 80% | 2470 fps | 98.9% |
| IMR 4350 | <<locked>> | 80% | 35,157 psi | 58% | 2267 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,770 psi | 67% | 2359 fps | 97.3% |
| IMR 4831 | <<locked>> | 80% | 33,721 psi | 55% | 2277 fps | 98.2% |
| IMR 4895 | <<locked>> | 80% | 48,573 psi | 80% | 2523 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 47,210 psi | 78% | 2497 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 98% | 45,774 psi | 75% | 2569 fps | 95.7% |
| Lovex S060 | <<locked>> | 80% | 50,937 psi | 84% | 2474 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 46,456 psi | 76% | 2438 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,450 psi | 63% | 2320 fps | 98.1% |
| Lovex S070 | <<locked>> | 80% | 36,608 psi | 60% | 2300 fps | 96.6% |
| Lovex S071 | <<locked>> | 90% | 30,400 psi | 50% | 2208 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 50,850 psi | 83% | 2493 fps | 100% |
| Norma 202 | <<locked>> | 80% | 51,358 psi | 84% | 2490 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,731 psi | 77% | 2484 fps | 100% |
| Norma 204 | <<locked>> | 84% | 39,233 psi | 64% | 2392 fps | 95.1% |
| Norma MRP | <<locked>> | 88% | 35,244 psi | 58% | 2402 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 35,027 psi | 57% | 2316 fps | 98.4% |
| Ramshot Big Game | <<locked>> | 80% | 46,688 psi | 77% | 2507 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 42,366 psi | 70% | 2516 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 33,837 psi | 56% | 2303 fps | 96.4% |
| Ramshot Magnum | <<locked>> | 96% | 37,652 psi | 62% | 2411 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,644 psi | 45% | 1440 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,049 psi | 74% | 2441 fps | 98.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 50,879 psi | 84% | 2602 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 41,220 psi | 68% | 2490 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,563 psi | 57% | 2336 fps | 98.1% |
| ReloadSwiss RS 70 | 62.2 gr | 80% | 33,881 psi | 56% | 2339 fps | 97.5% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 34,766 psi | 57% | 2415 fps | 95.1% |
| Rottweil R 902 | <<locked>> | 80% | 48,283 psi | 79% | 2448 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,901 psi | 69% | 2398 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 43,134 psi | 71% | 2434 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 88% | 37,492 psi | 62% | 2382 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 39,349 psi | 65% | 2333 fps | 96.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,450 psi | 63% | 2320 fps | 98.1% |
| Shooters World Precision | <<locked>> | 80% | 46,456 psi | 76% | 2438 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 36,608 psi | 60% | 2300 fps | 96.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,844 psi | 70% | 2448 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,198 psi | 82% | 2520 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,547 psi | 85% | 2425 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,468 psi | 71% | 2310 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 37,594 psi | 62% | 2267 fps | 96.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 39,537 psi | 65% | 2425 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 51,488 psi | 85% | 2428 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 42,453 psi | 70% | 2398 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 47,108 psi | 77% | 2477 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 31,488 psi | 52% | 2280 fps | 99.8% |
| Somchem S385 | <<locked>> | 86% | 35,737 psi | 59% | 2320 fps | 95.4% |
| Vihtavuori N135 | <<locked>> | 80% | 48,356 psi | 79% | 2411 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,689 psi | 80% | 2428 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,393 psi | 66% | 2336 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 36,318 psi | 60% | 2313 fps | 98.6% |
| Vihtavuori N165 | <<locked>> | 92% | 37,434 psi | 61% | 2346 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 46,949 psi | 77% | 2428 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,839 psi | 59% | 2316 fps | 98.3% |
| Vihtavuori N555 | <<locked>> | 80% | 27,398 psi | 45% | 2182 fps | 96.6% |
| Vihtavuori N560 | <<locked>> | 96% | 46,702 psi | 77% | 2608 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,621 psi | 58% | 2290 fps | 99.8% |
| Winchester 760 | <<locked>> | 80% | 37,101 psi | 61% | 2365 fps | 96.6% |
| Winchester StaBALL HD | <<locked>> | 82% | 23,598 psi | 39% | 2136 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,125 psi | 82% | 2526 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 40,059 psi | 66% | 2402 fps | 95.5% |
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 101 powders for .338 Blaser Mag. loaded with the .338 | 250gr | Rhino Solid Shank. Alliant Reloder-26 delivers the highest muzzle velocity at 2,769 fps; across all powders the maximum-charge window runs from 1,575 fps to 2,769 fps. Accurate 3100 gives the best case fill at 100 %, and 101 of the 101 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 60–90 %, leaving at least 10 % headroom. The 250.0 gr projectile in 0.338" calls for a 1:15.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, Accurate MAGPRO 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 | Rhino Solid Shank 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.