Load Specifications
Bullet:.375 | 300gr | Norma ORYX
Bullet Manufacturer:Norma
Bullet Weight:300 gr
Bullet Diameter:0.375"
Bullet Length:<<locked>>
Caliber:.375 Blaser Mag. load data
Case Length (l3):2.814"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:107.5 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:25.6"
Max. allowed Pressure:60,916 psi
Recommended Twist Rate:1:6.0
Load data in caliber .375 Blaser Mag. with .375 | 300gr | Norma ORYX bullet and 104 powders. The key underlying parameters are shown in the table above.
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>> | 86% | 54,723 psi | 90% | 2507 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 53,272 psi | 87% | 2523 fps | 98.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 45,179 psi | 74% | 2500 fps | 98.5% |
| Accurate 4064 | <<locked>> | 88% | 54,926 psi | 90% | 2556 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 54,766 psi | 90% | 2651 fps | 100% |
| Accurate High Countryᴾ | <<locked>> | 100% | 49,153 psi | 81% | 2671 fps | 96.2% |
| ADI AR 2206H | <<locked>> | 84% | 54,694 psi | 90% | 2585 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 52,460 psi | 86% | 2543 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 52,837 psi | 87% | 2638 fps | 97.6% |
| ADI Benchmark 8208 | <<locked>> | 82% | 53,577 psi | 88% | 2533 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 55,042 psi | 90% | 2503 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 54,462 psi | 89% | 2703 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 52,736 psi | 87% | 2562 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 53,084 psi | 87% | 2582 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 52,388 psi | 86% | 2654 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 53,243 psi | 87% | 2680 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 51,648 psi | 85% | 2625 fps | 97.5% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 45,324 psi | 74% | 2569 fps | 96.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 42,815 psi | 70% | 2523 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 37,724 psi | 62% | 2441 fps | 97.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 48,109 psi | 79% | 2687 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 54,534 psi | 90% | 2605 fps | 100% |
| Bofors RP3 | <<locked>> | 88% | 53,171 psi | 87% | 2579 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 45,324 psi | 74% | 2569 fps | 96.3% |
| Bofors RP7 | <<locked>> | 92% | 53,171 psi | 87% | 2559 fps | 98.5% |
| Hodgdon BL-C2 | <<locked>> | 82% | 53,142 psi | 87% | 2566 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 53,838 psi | 88% | 2592 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 94% | 53,780 psi | 88% | 2651 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 92% | 54,331 psi | 89% | 2615 fps | 98.2% |
| Hodgdon H4895 | <<locked>> | 82% | 51,953 psi | 85% | 2546 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 52,243 psi | 86% | 2582 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 55,042 psi | 90% | 2628 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 53,925 psi | 89% | 2687 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,911 psi | 59% | 1562 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 53,055 psi | 87% | 2549 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 52,286 psi | 86% | 2526 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 52,069 psi | 85% | 2526 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 54,839 psi | 90% | 2556 fps | 99.1% |
| IMR 4350 | <<locked>> | 96% | 53,548 psi | 88% | 2589 fps | 98.6% |
| IMR 4451 Enduron | <<locked>> | 92% | 54,926 psi | 90% | 2585 fps | 99% |
| IMR 4831 | <<locked>> | 96% | 51,837 psi | 85% | 2595 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 54,418 psi | 89% | 2608 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 52,634 psi | 86% | 2575 fps | 95.8% |
| IMR 8208 XBR | <<locked>> | 82% | 53,577 psi | 88% | 2533 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 54,752 psi | 90% | 2562 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 54,085 psi | 89% | 2516 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 51,953 psi | 85% | 2520 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 54,549 psi | 90% | 2582 fps | 99.7% |
| Lovex S070 | <<locked>> | 94% | 52,272 psi | 86% | 2572 fps | 99% |
| Lovex S071ᴾ | <<locked>> | 100% | 37,550 psi | 62% | 2365 fps | 96.9% |
| Norma 201 | <<locked>> | 84% | 53,621 psi | 88% | 2533 fps | 100% |
| Norma 202 | <<locked>> | 84% | 54,186 psi | 89% | 2530 fps | 100% |
| Norma 203B | <<locked>> | 86% | 52,330 psi | 86% | 2572 fps | 100% |
| Norma 204 | <<locked>> | 96% | 54,012 psi | 89% | 2635 fps | 97.7% |
| Norma MRPᴾ | <<locked>> | 100% | 47,761 psi | 78% | 2644 fps | 98.3% |
| Norma URP | <<locked>> | 96% | 53,621 psi | 88% | 2638 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 52,750 psi | 87% | 2595 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 52,446 psi | 86% | 2641 fps | 99.5% |
| Ramshot TAC | <<locked>> | 82% | 53,664 psi | 88% | 2562 fps | 99.7% |
| Ramshot Wild Boar | <<locked>> | 82% | 53,490 psi | 88% | 2575 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,564 psi | 60% | 1601 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 54,041 psi | 89% | 2579 fps | 99.4% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 53,722 psi | 88% | 2644 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 53,142 psi | 87% | 2677 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 54,331 psi | 89% | 2674 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 53,461 psi | 88% | 2700 fps | 100% |
| Rottweil R 901 | <<locked>> | 82% | 54,476 psi | 89% | 2507 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 54,128 psi | 89% | 2533 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 53,243 psi | 87% | 2572 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 54,505 psi | 89% | 2608 fps | 96.8% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 50,633 psi | 83% | 2612 fps | 97.5% |
| Rottweil R 907 | <<locked>> | 92% | 53,171 psi | 87% | 2559 fps | 98.5% |
| Shooters World Long Rifle | <<locked>> | 94% | 54,549 psi | 90% | 2582 fps | 99.7% |
| Shooters World Match Rifle | <<locked>> | 84% | 54,752 psi | 90% | 2562 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 51,953 psi | 85% | 2520 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 52,272 psi | 86% | 2572 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 54,737 psi | 90% | 2628 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 52,228 psi | 86% | 2543 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 53,229 psi | 87% | 2562 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 54,926 psi | 90% | 2470 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 51,996 psi | 85% | 2431 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 54,549 psi | 90% | 2539 fps | 99% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 50,154 psi | 82% | 2605 fps | 97.4% |
| Somchem S335 | <<locked>> | 84% | 54,360 psi | 89% | 2470 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 51,837 psi | 85% | 2530 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 53,548 psi | 88% | 2572 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 52,083 psi | 86% | 2641 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 51,242 psi | 84% | 2589 fps | 98.3% |
| Vihtavuori N133 | <<locked>> | 82% | 51,880 psi | 85% | 2411 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 54,186 psi | 89% | 2493 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 54,563 psi | 90% | 2510 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 54,752 psi | 90% | 2546 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 52,605 psi | 86% | 2585 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 44,208 psi | 73% | 2464 fps | 96.4% |
| Vihtavuori N530 | <<locked>> | 82% | 54,056 psi | 89% | 2536 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 52,750 psi | 87% | 2513 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 51,750 psi | 85% | 2592 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 47,587 psi | 78% | 2592 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 52,359 psi | 86% | 2562 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 54,230 psi | 89% | 2579 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 53,969 psi | 89% | 2654 fps | 99.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,348 psi | 63% | 2559 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 52,997 psi | 87% | 2569 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 48,182 psi | 79% | 2533 fps | 96.6% |
Start Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 45,281 psi | 74% | 2382 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 43,888 psi | 72% | 2375 fps | 96.5% |
| Accurate 3100 | <<locked>> | 90% | 32,198 psi | 53% | 2251 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 42,859 psi | 70% | 2388 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 31,705 psi | 52% | 2251 fps | 96.8% |
| Accurate High Country | <<locked>> | 98% | 45,876 psi | 75% | 2615 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 48,283 psi | 79% | 2490 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 41,075 psi | 67% | 2359 fps | 99.3% |
| ADI AR 2209 | <<locked>> | 94% | 43,584 psi | 72% | 2480 fps | 95.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,357 psi | 83% | 2490 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 51,503 psi | 85% | 2461 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,382 psi | 73% | 2543 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,046 psi | 67% | 2382 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 43,932 psi | 72% | 2441 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 31,937 psi | 52% | 2264 fps | 96.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 35,607 psi | 58% | 2379 fps | 99.4% |
| Alliant Reloder-19 | <<locked>> | 94% | 42,815 psi | 70% | 2474 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 98% | 42,496 psi | 70% | 2516 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 84% | 26,194 psi | 43% | 2139 fps | 95.9% |
| Alliant Reloder-25 | <<locked>> | 96% | 33,373 psi | 55% | 2339 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 88% | 31,633 psi | 52% | 2346 fps | 96.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 47,674 psi | 78% | 2503 fps | 99.8% |
| Bofors RP3 | <<locked>> | 80% | 40,973 psi | 67% | 2392 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 42,496 psi | 70% | 2516 fps | 95.5% |
| Bofors RP7 | <<locked>> | 82% | 38,957 psi | 64% | 2316 fps | 95.4% |
| Hodgdon BL-C2 | <<locked>> | 80% | 49,719 psi | 82% | 2520 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 41,568 psi | 68% | 2395 fps | 98.7% |
| Hodgdon H414 | <<locked>> | 82% | 36,158 psi | 59% | 2343 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 84% | 42,134 psi | 69% | 2415 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 48,805 psi | 80% | 2500 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,356 psi | 48% | 2172 fps | 97.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,092 psi | 74% | 2484 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 37,956 psi | 62% | 2405 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,818 psi | 44% | 1394 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 46,775 psi | 77% | 2457 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 48,936 psi | 80% | 2480 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,149 psi | 71% | 2388 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 80% | 45,571 psi | 75% | 2411 fps | 97.7% |
| IMR 4350 | <<locked>> | 86% | 39,233 psi | 64% | 2349 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 38,058 psi | 62% | 2300 fps | 95.6% |
| IMR 4831 | <<locked>> | 80% | 30,850 psi | 51% | 2215 fps | 96.5% |
| IMR 4895 | <<locked>> | 80% | 45,034 psi | 74% | 2467 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 98% | 49,443 psi | 81% | 2526 fps | 95% |
| IMR 8208 XBR | <<locked>> | 80% | 50,357 psi | 83% | 2490 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 47,979 psi | 79% | 2470 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,979 psi | 79% | 2428 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 43,279 psi | 71% | 2392 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 35,665 psi | 59% | 2257 fps | 96.5% |
| Lovex S070 | <<locked>> | 82% | 36,056 psi | 59% | 2287 fps | 95.4% |
| Lovex S071 | <<locked>> | 96% | 33,112 psi | 54% | 2274 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 47,442 psi | 78% | 2444 fps | 100% |
| Norma 202 | <<locked>> | 80% | 47,747 psi | 78% | 2444 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,308 psi | 71% | 2431 fps | 99.8% |
| Norma 204 | <<locked>> | 90% | 44,164 psi | 73% | 2477 fps | 95.5% |
| Norma MRP | <<locked>> | 92% | 36,593 psi | 60% | 2425 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 32,039 psi | 53% | 2251 fps | 96.7% |
| Ramshot Big Game | <<locked>> | 80% | 43,163 psi | 71% | 2451 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 82% | 33,257 psi | 55% | 2287 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 50,183 psi | 82% | 2510 fps | 99.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,096 psi | 82% | 2526 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,180 psi | 45% | 1427 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 41,858 psi | 69% | 2382 fps | 97.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 46,702 psi | 77% | 2539 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 37,884 psi | 62% | 2428 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 31,430 psi | 52% | 2264 fps | 96.2% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 31,314 psi | 51% | 2267 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 51,387 psi | 84% | 2467 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,136 psi | 74% | 2402 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 38,580 psi | 63% | 2343 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 96% | 48,138 psi | 79% | 2510 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 94% | 41,568 psi | 68% | 2457 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 82% | 38,957 psi | 64% | 2316 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,665 psi | 59% | 2257 fps | 96.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 47,979 psi | 79% | 2470 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,279 psi | 71% | 2392 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 36,056 psi | 59% | 2287 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,407 psi | 65% | 2388 fps | 99.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 48,863 psi | 80% | 2490 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 46,717 psi | 77% | 2467 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,428 psi | 80% | 2385 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,582 psi | 67% | 2270 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 37,115 psi | 61% | 2254 fps | 95.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 41,191 psi | 68% | 2454 fps | 95.2% |
| Somchem S335 | <<locked>> | 80% | 48,240 psi | 79% | 2388 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 48,530 psi | 80% | 2484 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 39,291 psi | 65% | 2346 fps | 99.7% |
| Somchem S365 | <<locked>> | 80% | 28,761 psi | 47% | 2211 fps | 98.7% |
| Somchem S385 | <<locked>> | 92% | 39,624 psi | 65% | 2395 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 80% | 48,878 psi | 80% | 2372 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 44,860 psi | 74% | 2372 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,295 psi | 74% | 2385 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,318 psi | 61% | 2283 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 33,315 psi | 55% | 2251 fps | 97% |
| Vihtavuori N165 | <<locked>> | 98% | 41,452 psi | 68% | 2418 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 50,676 psi | 83% | 2490 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 43,613 psi | 72% | 2382 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 32,837 psi | 54% | 2254 fps | 96.7% |
| Vihtavuori N555 | <<locked>> | 82% | 26,440 psi | 43% | 2159 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,895 psi | 54% | 2228 fps | 98.8% |
| Winchester 748 | <<locked>> | 80% | 50,705 psi | 83% | 2533 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 36,303 psi | 60% | 2346 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 86% | 24,555 psi | 40% | 2156 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 46,427 psi | 76% | 2470 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 42,018 psi | 69% | 2428 fps | 95% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 118 powders for .375 Blaser Mag. loaded with the .375 | 300gr | Norma ORYX. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,703 fps; across all powders the maximum-charge window runs from 1,562 fps to 2,703 fps. Accurate 3100 gives the best case fill at 100 %, and 118 of the 118 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 300.0 gr projectile in 0.375" calls for a 1:6.0 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. As outliers, Accurate MAGPRO, ADI AR 2213, Hodgdon H1000 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.