Load Specifications
Bullet Manufacturer:Woodleigh
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 | Woodleigh RN SN 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-17.
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>> | 84% | 52,997 psi | 87% | 2493 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 52,301 psi | 86% | 2516 fps | 98.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,992 psi | 77% | 2536 fps | 99% |
| Accurate 4064 | <<locked>> | 86% | 53,243 psi | 87% | 2546 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 53,011 psi | 87% | 2638 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 52,721 psi | 87% | 2569 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 53,838 psi | 88% | 2575 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 54,375 psi | 89% | 2674 fps | 98.1% |
| ADI Benchmark 8208 | <<locked>> | 82% | 54,926 psi | 90% | 2562 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 52,489 psi | 86% | 2687 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 54,230 psi | 89% | 2671 fps | 98.1% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 54,230 psi | 89% | 2671 fps | 98.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 54,201 psi | 89% | 2595 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 54,549 psi | 90% | 2615 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 54,041 psi | 89% | 2690 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 55,114 psi | 90% | 2717 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 53,417 psi | 88% | 2664 fps | 98% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 46,934 psi | 77% | 2608 fps | 97% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,324 psi | 73% | 2559 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,899 psi | 64% | 2480 fps | 98.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,966 psi | 82% | 2726 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 52,431 psi | 86% | 2589 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 43,105 psi | 71% | 2539 fps | 95.8% |
| Bofors RP3 | <<locked>> | 88% | 54,839 psi | 90% | 2608 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 46,934 psi | 77% | 2608 fps | 97% |
| Bofors RP7 | <<locked>> | 92% | 54,636 psi | 90% | 2595 fps | 98.9% |
| Hodgdon BL-C2 | <<locked>> | 82% | 54,592 psi | 90% | 2595 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 52,098 psi | 86% | 2579 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 53,403 psi | 88% | 2657 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 94% | 53,998 psi | 89% | 2621 fps | 98.3% |
| Hodgdon H4895 | <<locked>> | 82% | 53,330 psi | 88% | 2575 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 53,998 psi | 89% | 2615 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 53,301 psi | 88% | 2615 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 51,880 psi | 85% | 2667 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,100 psi | 59% | 1575 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 53,519 psi | 88% | 2566 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 52,533 psi | 86% | 2539 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 52,765 psi | 87% | 2549 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 51,982 psi | 85% | 2530 fps | 98.9% |
| IMR 4350 | <<locked>> | 96% | 55,013 psi | 90% | 2621 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 90% | 53,069 psi | 87% | 2575 fps | 99% |
| IMR 4831ᴾ | <<locked>> | 100% | 54,259 psi | 89% | 2641 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 52,649 psi | 86% | 2595 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 54,114 psi | 89% | 2608 fps | 96.3% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 49,835 psi | 82% | 2641 fps | 95.9% |
| IMR 8208 XBR | <<locked>> | 82% | 54,926 psi | 90% | 2562 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 52,736 psi | 87% | 2546 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 52,156 psi | 86% | 2503 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 53,476 psi | 88% | 2552 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 52,692 psi | 87% | 2569 fps | 99.7% |
| Lovex S070 | <<locked>> | 94% | 53,679 psi | 88% | 2605 fps | 99.3% |
| Lovex S071ᴾ | <<locked>> | 100% | 39,030 psi | 64% | 2402 fps | 97.5% |
| Norma 201 | <<locked>> | 84% | 54,984 psi | 90% | 2562 fps | 100% |
| Norma 202 | <<locked>> | 82% | 52,286 psi | 86% | 2516 fps | 100% |
| Norma 203B | <<locked>> | 86% | 53,809 psi | 88% | 2602 fps | 100% |
| Norma 204 | <<locked>> | 94% | 52,069 psi | 85% | 2618 fps | 97.6% |
| Norma MRPᴾ | <<locked>> | 100% | 49,588 psi | 81% | 2687 fps | 98.8% |
| Norma URP | <<locked>> | 94% | 52,011 psi | 85% | 2625 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 54,288 psi | 89% | 2628 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 52,910 psi | 87% | 2700 fps | 96.9% |
| Ramshot Hunter | <<locked>> | 96% | 54,143 psi | 89% | 2674 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 45,818 psi | 75% | 2566 fps | 97.1% |
| Ramshot Wild Boar | <<locked>> | 82% | 55,085 psi | 90% | 2608 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,579 psi | 60% | 1611 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 52,257 psi | 86% | 2566 fps | 99.3% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 51,793 psi | 85% | 2628 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 54,868 psi | 90% | 2710 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 52,779 psi | 87% | 2661 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 51,648 psi | 85% | 2687 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 84% | 52,417 psi | 86% | 2520 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 54,940 psi | 90% | 2605 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 52,750 psi | 87% | 2595 fps | 96.7% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 52,344 psi | 86% | 2648 fps | 98% |
| Rottweil R 907 | <<locked>> | 92% | 54,636 psi | 90% | 2595 fps | 98.9% |
| Shooters World Long Rifle | <<locked>> | 92% | 52,692 psi | 87% | 2569 fps | 99.7% |
| Shooters World Match Rifle | <<locked>> | 82% | 52,736 psi | 87% | 2546 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 53,476 psi | 88% | 2552 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 53,679 psi | 88% | 2605 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 52,924 psi | 87% | 2615 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 53,824 psi | 88% | 2575 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 54,621 psi | 90% | 2592 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 52,750 psi | 87% | 2454 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 53,272 psi | 87% | 2457 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 52,678 psi | 86% | 2526 fps | 99% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 51,851 psi | 85% | 2644 fps | 97.9% |
| Somchem S335 | <<locked>> | 82% | 52,446 psi | 86% | 2457 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 53,403 psi | 88% | 2562 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 54,984 psi | 90% | 2602 fps | 100% |
| Somchem S361 | <<locked>> | 98% | 54,433 psi | 89% | 2592 fps | 96.1% |
| Somchem S365 | <<locked>> | 98% | 54,099 psi | 89% | 2674 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 53,040 psi | 87% | 2628 fps | 98.7% |
| Unknown powder | <<locked>> | 92% | 52,953 psi | 87% | 2631 fps | 99.9% |
| Vihtavuori N133 | <<locked>> | 82% | 53,156 psi | 87% | 2438 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 52,373 psi | 86% | 2480 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 52,736 psi | 87% | 2497 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 52,953 psi | 87% | 2536 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 54,259 psi | 89% | 2618 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 45,818 psi | 75% | 2503 fps | 97.1% |
| Vihtavuori N540 | <<locked>> | 86% | 54,244 psi | 89% | 2543 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 53,330 psi | 88% | 2625 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 49,429 psi | 81% | 2631 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 54,012 psi | 89% | 2595 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 53,403 psi | 88% | 2657 fps | 99.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,711 psi | 65% | 2598 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 51,532 psi | 85% | 2595 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% | 46,688 psi | 77% | 2411 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 40,393 psi | 66% | 2320 fps | 95.8% |
| Accurate 3100 | <<locked>> | 90% | 33,446 psi | 55% | 2290 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 44,179 psi | 73% | 2415 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,938 psi | 54% | 2287 fps | 97.4% |
| ADI AR 2206H | <<locked>> | 80% | 49,647 psi | 82% | 2523 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 42,163 psi | 69% | 2392 fps | 99.5% |
| ADI AR 2209 | <<locked>> | 92% | 42,206 psi | 69% | 2470 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,750 psi | 85% | 2520 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,774 psi | 75% | 2579 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 42,061 psi | 69% | 2470 fps | 95.4% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 42,061 psi | 69% | 2470 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,192 psi | 69% | 2411 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,266 psi | 74% | 2474 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,880 psi | 54% | 2297 fps | 97.5% |
| Alliant Reloder-17 | 73.4 gr | 80% | 36,680 psi | 60% | 2408 fps | 99.6% |
| Alliant Reloder-19 | <<locked>> | 92% | 41,553 psi | 68% | 2464 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 96% | 41,263 psi | 68% | 2503 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 82% | 25,440 psi | 42% | 2126 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 94% | 32,387 psi | 53% | 2326 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 86% | 30,705 psi | 50% | 2329 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,066 psi | 81% | 2536 fps | 99.9% |
| Bofors RP15 | <<locked>> | 98% | 40,553 psi | 67% | 2490 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 42,322 psi | 69% | 2425 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 41,263 psi | 68% | 2503 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 37,695 psi | 62% | 2303 fps | 95.2% |
| Hodgdon BL-C2 | <<locked>> | 80% | 51,198 psi | 84% | 2549 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,801 psi | 70% | 2428 fps | 99% |
| Hodgdon H414 | <<locked>> | 80% | 38,000 psi | 62% | 2392 fps | 96.1% |
| Hodgdon H4350 | <<locked>> | 84% | 39,798 psi | 65% | 2379 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 50,169 psi | 82% | 2533 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,313 psi | 50% | 2205 fps | 98.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 43,758 psi | 72% | 2474 fps | 100% |
| Hodgdon Superformance | 81.5 gr | 84% | 39,189 psi | 64% | 2444 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,934 psi | 44% | 1407 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,541 psi | 73% | 2431 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 46,296 psi | 76% | 2454 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,452 psi | 68% | 2369 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 80% | 40,930 psi | 67% | 2339 fps | 96.8% |
| IMR 4350 | <<locked>> | 84% | 38,000 psi | 62% | 2336 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 39,160 psi | 64% | 2336 fps | 96.2% |
| IMR 4831 | <<locked>> | 80% | 28,979 psi | 48% | 2175 fps | 95.9% |
| IMR 4895 | <<locked>> | 80% | 46,398 psi | 76% | 2500 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 50,908 psi | 84% | 2559 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 98% | 46,601 psi | 77% | 2585 fps | 95% |
| IMR 8208 XBR | <<locked>> | 80% | 51,750 psi | 85% | 2520 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 49,371 psi | 81% | 2500 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,110 psi | 81% | 2457 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 44,469 psi | 73% | 2421 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 36,666 psi | 60% | 2290 fps | 97% |
| Lovex S070 | <<locked>> | 80% | 34,780 psi | 57% | 2267 fps | 95.2% |
| Lovex S071 | <<locked>> | 94% | 32,314 psi | 53% | 2264 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 48,646 psi | 80% | 2474 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,994 psi | 80% | 2470 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,614 psi | 73% | 2464 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 42,670 psi | 70% | 2464 fps | 95.4% |
| Norma MRP | <<locked>> | 92% | 37,956 psi | 62% | 2467 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 33,069 psi | 54% | 2283 fps | 97.2% |
| Ramshot Big Game | <<locked>> | 80% | 44,541 psi | 73% | 2480 fps | 99.9% |
| Ramshot Grand | <<locked>> | 96% | 45,832 psi | 75% | 2582 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 82% | 34,360 psi | 56% | 2323 fps | 95.8% |
| Ramshot Magnum | <<locked>> | 96% | 39,537 psi | 65% | 2451 fps | 95.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,488 psi | 85% | 2556 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,296 psi | 45% | 1440 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,989 psi | 71% | 2415 fps | 97.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,399 psi | 79% | 2579 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,001 psi | 64% | 2461 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,532 psi | 53% | 2300 fps | 96.9% |
| ReloadSwiss RS 70 | 74.6 gr | 80% | 32,285 psi | 53% | 2303 fps | 96% |
| Rottweil R 902 | <<locked>> | 80% | 46,369 psi | 76% | 2431 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 39,755 psi | 65% | 2372 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 94% | 46,543 psi | 76% | 2497 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 92% | 40,350 psi | 66% | 2444 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 37,695 psi | 62% | 2303 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,666 psi | 60% | 2290 fps | 97% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,371 psi | 81% | 2500 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,469 psi | 73% | 2421 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 34,780 psi | 57% | 2267 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,756 psi | 67% | 2421 fps | 99.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,241 psi | 82% | 2523 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,095 psi | 79% | 2497 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,719 psi | 82% | 2415 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,727 psi | 69% | 2300 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 35,752 psi | 59% | 2238 fps | 95.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 39,972 psi | 66% | 2441 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 49,385 psi | 81% | 2415 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,908 psi | 82% | 2513 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 40,408 psi | 66% | 2375 fps | 99.8% |
| Somchem S361 | <<locked>> | 96% | 51,068 psi | 84% | 2543 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 29,718 psi | 49% | 2244 fps | 99.1% |
| Somchem S385 | <<locked>> | 90% | 38,421 psi | 63% | 2382 fps | 95.5% |
| Unknown powder | <<locked>> | 80% | 35,810 psi | 59% | 2333 fps | 97.4% |
| Vihtavuori N133 | <<locked>> | 80% | 50,169 psi | 82% | 2402 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,253 psi | 76% | 2398 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,499 psi | 76% | 2411 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,406 psi | 63% | 2313 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 34,461 psi | 57% | 2283 fps | 97.6% |
| Vihtavuori N165 | <<locked>> | 96% | 40,234 psi | 66% | 2405 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 44,817 psi | 74% | 2408 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,924 psi | 56% | 2287 fps | 97.2% |
| Vihtavuori N555 | <<locked>> | 82% | 27,369 psi | 45% | 2192 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,837 psi | 56% | 2260 fps | 99.2% |
| Winchester 760 | <<locked>> | 80% | 38,000 psi | 62% | 2392 fps | 96.1% |
| Winchester StaBALL HD | <<locked>> | 84% | 23,830 psi | 39% | 2142 fps | 95% |
| Winchester Supreme 780 | <<locked>> | 92% | 41,771 psi | 69% | 2438 fps | 95.2% |
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 .375 Blaser Mag. loaded with the .375 | 300gr | Woodleigh RN SN. Alliant Reloder-26 delivers the highest muzzle velocity at 2,726 fps; across all powders the maximum-charge window runs from 1,575 fps to 2,726 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 300.0 gr projectile in 0.375" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Power Pro Varmint 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-17 rank at the top here: for .375 Blaser Mag. with the .375 | 300gr | Woodleigh RN SN 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.