Load Specifications
Bullet:.375 | 300gr | Barnes Solid
Bullet Manufacturer:Barnes
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 | Barnes Solid bullet and 103 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 2015 | <<locked>> | 82% | 54,491 psi | 89% | 2454 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 53,403 psi | 88% | 2484 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 54,737 psi | 90% | 2543 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 51,996 psi | 85% | 2490 fps | 97.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 43,642 psi | 72% | 2464 fps | 98.1% |
| Accurate 4064 | <<locked>> | 88% | 53,461 psi | 88% | 2530 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 53,098 psi | 87% | 2618 fps | 100% |
| ADI AR 2206H | <<locked>> | 84% | 53,563 psi | 88% | 2559 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 54,592 psi | 90% | 2562 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 51,416 psi | 84% | 2602 fps | 97.1% |
| ADI Benchmark 8208 | <<locked>> | 82% | 52,417 psi | 86% | 2510 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 53,548 psi | 88% | 2480 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 53,040 psi | 87% | 2674 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 54,621 psi | 90% | 2579 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 51,764 psi | 85% | 2552 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 54,114 psi | 89% | 2667 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 51,721 psi | 85% | 2651 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 50,241 psi | 82% | 2592 fps | 97% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,452 psi | 68% | 2490 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 36,637 psi | 60% | 2405 fps | 96.8% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 46,456 psi | 76% | 2651 fps | 99.7% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 53,171 psi | 87% | 2575 fps | 100% |
| Bofors RP3 | <<locked>> | 88% | 51,822 psi | 85% | 2552 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 51,880 psi | 85% | 2530 fps | 98.2% |
| Hodgdon Benchmark | <<locked>> | 82% | 54,085 psi | 89% | 2490 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 51,663 psi | 85% | 2536 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 52,620 psi | 86% | 2562 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 94% | 52,286 psi | 86% | 2618 fps | 98.8% |
| Hodgdon H4350 | <<locked>> | 92% | 52,852 psi | 87% | 2579 fps | 97.8% |
| Hodgdon H4895 | <<locked>> | 84% | 54,085 psi | 89% | 2566 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 54,012 psi | 89% | 2595 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 53,519 psi | 88% | 2598 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 52,359 psi | 86% | 2651 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,882 psi | 59% | 1549 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 51,735 psi | 85% | 2520 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 54,201 psi | 89% | 2543 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 53,954 psi | 89% | 2543 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 53,708 psi | 88% | 2526 fps | 98.8% |
| IMR 4350 | <<locked>> | 96% | 52,199 psi | 86% | 2556 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 92% | 53,693 psi | 88% | 2556 fps | 98.8% |
| IMR 4831 | <<locked>> | 98% | 53,519 psi | 88% | 2608 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 53,069 psi | 87% | 2579 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 52,417 psi | 86% | 2510 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 53,359 psi | 88% | 2533 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 52,997 psi | 87% | 2490 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 53,954 psi | 89% | 2539 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 53,229 psi | 87% | 2552 fps | 99.5% |
| Lovex S070 | <<locked>> | 96% | 53,998 psi | 89% | 2585 fps | 99% |
| Lovex S071ᴾ | <<locked>> | 100% | 36,289 psi | 60% | 2333 fps | 96.3% |
| Norma 201 | <<locked>> | 84% | 52,417 psi | 86% | 2507 fps | 100% |
| Norma 202 | <<locked>> | 84% | 52,794 psi | 87% | 2503 fps | 100% |
| Norma 203B | <<locked>> | 88% | 54,389 psi | 89% | 2589 fps | 100% |
| Norma 204 | <<locked>> | 96% | 52,475 psi | 86% | 2602 fps | 97.2% |
| Norma MRPᴾ | <<locked>> | 100% | 46,267 psi | 76% | 2608 fps | 97.8% |
| Norma URP | <<locked>> | 96% | 52,054 psi | 85% | 2605 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 88% | 54,810 psi | 90% | 2615 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 54,288 psi | 89% | 2657 fps | 99.5% |
| Ramshot TAC | <<locked>> | 82% | 52,388 psi | 86% | 2533 fps | 99.5% |
| Ramshot Wild Boar | <<locked>> | 82% | 52,272 psi | 86% | 2546 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,361 psi | 60% | 1585 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 52,779 psi | 87% | 2546 fps | 99.1% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 52,069 psi | 85% | 2612 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 55,085 psi | 90% | 2694 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 52,649 psi | 86% | 2641 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 52,054 psi | 85% | 2667 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 82% | 53,374 psi | 88% | 2484 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 52,953 psi | 87% | 2507 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 51,721 psi | 85% | 2543 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 53,011 psi | 87% | 2575 fps | 96.3% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 49,052 psi | 81% | 2575 fps | 97% |
| Rottweil R 907 | <<locked>> | 92% | 51,880 psi | 85% | 2530 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 94% | 53,229 psi | 87% | 2552 fps | 99.5% |
| Shooters World Match Rifle | <<locked>> | 84% | 53,359 psi | 88% | 2533 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 53,954 psi | 89% | 2539 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 53,998 psi | 89% | 2585 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 53,374 psi | 88% | 2602 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 54,447 psi | 89% | 2559 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 51,837 psi | 85% | 2533 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 53,650 psi | 88% | 2444 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 53,969 psi | 89% | 2448 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 53,156 psi | 87% | 2507 fps | 98.7% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 48,588 psi | 80% | 2569 fps | 96.9% |
| Somchem S335 | <<locked>> | 84% | 53,214 psi | 87% | 2448 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 54,215 psi | 89% | 2552 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 52,098 psi | 86% | 2543 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 53,795 psi | 88% | 2654 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 49,777 psi | 82% | 2556 fps | 97.9% |
| Vihtavuori N133 | <<locked>> | 84% | 54,012 psi | 89% | 2428 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 52,895 psi | 87% | 2470 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 53,403 psi | 88% | 2487 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 53,388 psi | 88% | 2520 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 54,549 psi | 90% | 2602 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 42,917 psi | 70% | 2431 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 82% | 52,881 psi | 87% | 2510 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 54,882 psi | 90% | 2530 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 53,490 psi | 88% | 2608 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 45,876 psi | 75% | 2559 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 54,375 psi | 89% | 2579 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 52,837 psi | 87% | 2552 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 52,518 psi | 86% | 2621 fps | 98.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,086 psi | 61% | 2516 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 51,590 psi | 85% | 2539 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 46,673 psi | 77% | 2497 fps | 96% |
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 2015 | <<locked>> | 80% | 51,213 psi | 84% | 2415 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 43,976 psi | 72% | 2356 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 51,271 psi | 84% | 2497 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 42,786 psi | 70% | 2343 fps | 96% |
| Accurate 3100 | <<locked>> | 92% | 33,272 psi | 55% | 2267 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 41,597 psi | 68% | 2359 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 30,777 psi | 51% | 2221 fps | 96.2% |
| ADI AR 2206H | <<locked>> | 80% | 47,311 psi | 78% | 2467 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 40,132 psi | 66% | 2333 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 96% | 45,237 psi | 74% | 2500 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,356 psi | 81% | 2464 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 50,140 psi | 82% | 2438 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,163 psi | 71% | 2510 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,045 psi | 66% | 2356 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,931 psi | 70% | 2415 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 80% | 31,038 psi | 51% | 2231 fps | 96.3% |
| Alliant Reloder-17 | 69.4 gr | 80% | 34,577 psi | 57% | 2343 fps | 99% |
| Alliant Reloder-19 | <<locked>> | 96% | 44,367 psi | 73% | 2493 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 84% | 25,512 psi | 42% | 2110 fps | 95.2% |
| Alliant Reloder-25 | <<locked>> | 98% | 34,389 psi | 56% | 2352 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 88% | 30,632 psi | 50% | 2306 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 46,485 psi | 76% | 2477 fps | 99.6% |
| Bofors RP3 | <<locked>> | 80% | 39,842 psi | 65% | 2362 fps | 99.8% |
| Bofors RP7 | <<locked>> | 84% | 40,538 psi | 67% | 2339 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 50,981 psi | 84% | 2448 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 48,428 psi | 80% | 2490 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 40,524 psi | 67% | 2369 fps | 98.4% |
| Hodgdon H414 | <<locked>> | 84% | 37,608 psi | 62% | 2365 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 84% | 41,031 psi | 67% | 2382 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 47,747 psi | 78% | 2474 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,587 psi | 47% | 2142 fps | 97.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 43,758 psi | 72% | 2454 fps | 100% |
| Hodgdon Superformance | 78.9 gr | 86% | 39,610 psi | 65% | 2428 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,731 psi | 44% | 1381 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,774 psi | 75% | 2431 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 47,630 psi | 78% | 2454 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,177 psi | 69% | 2362 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,556 psi | 73% | 2382 fps | 97.3% |
| IMR 4350 | <<locked>> | 86% | 38,203 psi | 63% | 2320 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 80% | 37,231 psi | 61% | 2274 fps | 95.1% |
| IMR 4831 | <<locked>> | 80% | 29,878 psi | 49% | 2182 fps | 95.9% |
| IMR 4895 | <<locked>> | 80% | 44,005 psi | 72% | 2441 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 80% | 49,356 psi | 81% | 2464 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 46,717 psi | 77% | 2444 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,036 psi | 77% | 2402 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 42,279 psi | 69% | 2365 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 34,693 psi | 57% | 2228 fps | 96% |
| Lovex S070 | <<locked>> | 84% | 37,304 psi | 61% | 2303 fps | 95.6% |
| Lovex S071 | <<locked>> | 98% | 33,968 psi | 56% | 2283 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 46,238 psi | 76% | 2418 fps | 100% |
| Norma 202 | <<locked>> | 80% | 46,688 psi | 77% | 2418 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,308 psi | 69% | 2405 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 43,062 psi | 71% | 2448 fps | 95% |
| Norma MRP | <<locked>> | 94% | 37,898 psi | 62% | 2444 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 31,038 psi | 51% | 2218 fps | 96.1% |
| Ramshot Big Game | <<locked>> | 80% | 41,930 psi | 69% | 2418 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 34,447 psi | 57% | 2303 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 49,066 psi | 81% | 2480 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 48,834 psi | 80% | 2497 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,079 psi | 44% | 1414 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 40,770 psi | 67% | 2352 fps | 97% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 45,455 psi | 75% | 2510 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 36,782 psi | 60% | 2398 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 30,429 psi | 50% | 2234 fps | 95.6% |
| ReloadSwiss RS 70 | 72.2 gr | 82% | 32,474 psi | 53% | 2287 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 50,430 psi | 83% | 2444 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 44,106 psi | 72% | 2375 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 37,434 psi | 61% | 2313 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 98% | 49,806 psi | 82% | 2526 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 96% | 43,033 psi | 71% | 2474 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 84% | 40,538 psi | 67% | 2339 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 34,693 psi | 57% | 2228 fps | 96% |
| Shooters World Match Rifle | <<locked>> | 80% | 46,717 psi | 77% | 2444 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,279 psi | 69% | 2365 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 37,304 psi | 61% | 2303 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,334 psi | 63% | 2359 fps | 99.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,645 psi | 78% | 2461 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,629 psi | 75% | 2438 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,529 psi | 78% | 2362 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,769 psi | 65% | 2247 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 36,187 psi | 59% | 2224 fps | 95% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 42,641 psi | 70% | 2467 fps | 95.4% |
| Somchem S335 | <<locked>> | 80% | 47,065 psi | 77% | 2362 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 47,326 psi | 78% | 2454 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 38,189 psi | 63% | 2316 fps | 99.5% |
| Somchem S365 | <<locked>> | 80% | 27,891 psi | 46% | 2182 fps | 98.3% |
| Somchem S385 | <<locked>> | 92% | 38,363 psi | 63% | 2362 fps | 95% |
| Vihtavuori N133 | <<locked>> | 80% | 47,964 psi | 79% | 2352 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,874 psi | 72% | 2349 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,135 psi | 72% | 2359 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,303 psi | 60% | 2257 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 32,474 psi | 53% | 2221 fps | 96.6% |
| Vihtavuori N165 | <<locked>> | 98% | 40,350 psi | 66% | 2385 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 49,530 psi | 81% | 2464 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 42,569 psi | 70% | 2356 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 31,923 psi | 52% | 2224 fps | 96.1% |
| Vihtavuori N555 | <<locked>> | 84% | 27,253 psi | 45% | 2175 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,068 psi | 53% | 2201 fps | 98.4% |
| Winchester 748 | <<locked>> | 80% | 49,501 psi | 81% | 2507 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 37,768 psi | 62% | 2369 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 88% | 25,411 psi | 42% | 2175 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,324 psi | 74% | 2444 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 43,613 psi | 72% | 2444 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 118 powders for .375 Blaser Mag. loaded with the .375 | 300gr | Barnes Solid. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,694 fps; across all powders the maximum-charge window runs from 1,549 fps to 2,694 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 58–90 %, 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 MAGPRO, ADI AR 2209 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 | Barnes Solid they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2213, Bofors RP15 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.