Load Specifications
Load data in caliber .375 Swiss P with .375 | 320gr | CutEdge MTH bullet and 91 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Norma MRP and Vihtavuori N560.
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.
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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% | 53,780 psi | 88% | 2457 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 51,880 psi | 85% | 2487 fps | 99.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 52,518 psi | 86% | 2579 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 54,244 psi | 89% | 2510 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 55,042 psi | 90% | 2621 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 54,911 psi | 90% | 2720 fps | 97.7% |
| ADI AR 2208 | <<locked>> | 86% | 54,868 psi | 90% | 2546 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 52,605 psi | 86% | 2618 fps | 99% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 53,722 psi | 88% | 2667 fps | 98.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 34,084 psi | 56% | 2356 fps | 96.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 54,041 psi | 89% | 2664 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 52,112 psi | 86% | 2520 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 52,272 psi | 86% | 2539 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 52,634 psi | 86% | 2625 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 53,621 psi | 88% | 2644 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 51,953 psi | 85% | 2608 fps | 98.9% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 52,475 psi | 86% | 2664 fps | 99.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 49,545 psi | 81% | 2595 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,033 psi | 71% | 2539 fps | 99.8% |
| Alliant Reloder-26 | <<locked>> | 98% | 52,939 psi | 87% | 2726 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 48,051 psi | 79% | 2595 fps | 98.4% |
| Bofors RP3 | <<locked>> | 84% | 52,533 psi | 86% | 2533 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 52,475 psi | 86% | 2664 fps | 99.2% |
| Bofors RP7 | <<locked>> | 88% | 52,344 psi | 86% | 2530 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 42,815 psi | 70% | 2480 fps | 96.5% |
| Hodgdon H380 | <<locked>> | 84% | 53,156 psi | 87% | 2556 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 53,795 psi | 88% | 2625 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 88% | 53,853 psi | 88% | 2585 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 98% | 54,041 psi | 89% | 2618 fps | 97.7% |
| Hodgdon H4831 SC | <<locked>> | 98% | 52,895 psi | 87% | 2602 fps | 97.5% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 52,750 psi | 87% | 2552 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 54,433 psi | 89% | 2582 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 42,119 psi | 69% | 2572 fps | 98% |
| Hodgdon Superformance | <<locked>> | 90% | 53,780 psi | 88% | 2661 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,274 psi | 60% | 1562 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 54,331 psi | 89% | 2530 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 53,548 psi | 88% | 2520 fps | 99.7% |
| IMR 4350 | <<locked>> | 92% | 53,156 psi | 87% | 2562 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 88% | 54,041 psi | 89% | 2552 fps | 99.7% |
| IMR 4831 | <<locked>> | 92% | 52,141 psi | 86% | 2569 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 53,650 psi | 88% | 2562 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 52,228 psi | 86% | 2556 fps | 97.5% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 51,155 psi | 84% | 2641 fps | 97.9% |
| Lovex S062 | <<locked>> | 84% | 54,462 psi | 89% | 2523 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 53,853 psi | 88% | 2549 fps | 100% |
| Lovex S070 | <<locked>> | 90% | 51,692 psi | 85% | 2543 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,598 psi | 72% | 2448 fps | 99.4% |
| Norma 203B | <<locked>> | 84% | 55,071 psi | 90% | 2575 fps | 100% |
| Norma 204 | <<locked>> | 92% | 53,795 psi | 88% | 2612 fps | 99% |
| Norma MRP | <<locked>> | 98% | 51,938 psi | 85% | 2687 fps | 99.8% |
| Norma URP | <<locked>> | 92% | 53,998 psi | 89% | 2608 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 52,199 psi | 86% | 2552 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 51,474 psi | 85% | 2657 fps | 98.3% |
| Ramshot Hunter | <<locked>> | 92% | 52,721 psi | 87% | 2615 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 45,643 psi | 75% | 2543 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,912 psi | 61% | 1598 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 53,069 psi | 87% | 2543 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 53,069 psi | 87% | 2631 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 54,940 psi | 90% | 2644 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 53,577 psi | 88% | 2674 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 41,843 psi | 69% | 2569 fps | 98.8% |
| Rottweil R 902 | <<locked>> | 82% | 52,953 psi | 87% | 2487 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 52,779 psi | 87% | 2533 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 54,491 psi | 89% | 2592 fps | 98.3% |
| Rottweil R 905 | <<locked>> | 98% | 54,694 psi | 90% | 2648 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 88% | 52,344 psi | 86% | 2530 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 90% | 53,853 psi | 88% | 2549 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 54,462 psi | 89% | 2523 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 51,692 psi | 85% | 2543 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 54,346 psi | 89% | 2589 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 54,128 psi | 89% | 2425 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 53,490 psi | 88% | 2507 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 54,215 psi | 89% | 2644 fps | 99.3% |
| Somchem S355 | <<locked>> | 86% | 52,866 psi | 87% | 2530 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 52,330 psi | 86% | 2536 fps | 97.3% |
| Somchem S365 | <<locked>> | 94% | 53,127 psi | 87% | 2608 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 51,677 psi | 85% | 2572 fps | 99.4% |
| Vihtavuori N135 | <<locked>> | 82% | 53,374 psi | 88% | 2444 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 53,621 psi | 88% | 2461 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 54,099 psi | 89% | 2503 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 52,678 psi | 86% | 2556 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 50,908 psi | 84% | 2549 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 82% | 51,764 psi | 85% | 2464 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 51,677 psi | 85% | 2562 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 51,953 psi | 85% | 2618 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 52,431 psi | 86% | 2680 fps | 97.8% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 44,193 psi | 73% | 2539 fps | 96.3% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 51,982 psi | 85% | 2526 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 53,969 psi | 89% | 2625 fps | 99.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,483 psi | 73% | 2654 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 51,605 psi | 85% | 2566 fps | 98.8% |
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% | 50,415 psi | 83% | 2415 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,631 psi | 80% | 2438 fps | 98.9% |
| Accurate 3100 | <<locked>> | 82% | 28,152 psi | 46% | 2133 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 47,834 psi | 79% | 2425 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,318 psi | 60% | 2323 fps | 99.2% |
| Accurate MAGPRO | <<locked>> | 94% | 44,324 psi | 73% | 2552 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 45,571 psi | 75% | 2411 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 37,942 psi | 62% | 2362 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 92% | 41,089 psi | 67% | 2451 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 98% | 32,053 psi | 53% | 2303 fps | 95.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,285 psi | 83% | 2608 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,992 psi | 76% | 2434 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,110 psi | 81% | 2493 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 35,650 psi | 59% | 2333 fps | 99.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,408 psi | 66% | 2444 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 37,579 psi | 62% | 2356 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 88% | 35,157 psi | 58% | 2349 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 25,904 psi | 43% | 2119 fps | 97.7% |
| Alliant Reloder-25 | <<locked>> | 86% | 27,557 psi | 45% | 2175 fps | 95% |
| Alliant Reloder-26 | 79.7 gr | 80% | 27,354 psi | 45% | 2218 fps | 96.1% |
| Bofors RP15 | <<locked>> | 92% | 37,115 psi | 61% | 2392 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 46,079 psi | 76% | 2441 fps | 100% |
| Bofors RP5 | <<locked>> | 88% | 35,157 psi | 58% | 2349 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 40,596 psi | 67% | 2336 fps | 97.6% |
| Hodgdon H1000 | <<locked>> | 98% | 40,118 psi | 66% | 2428 fps | 95.6% |
| Hodgdon H380 | <<locked>> | 80% | 46,499 psi | 76% | 2457 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 38,479 psi | 63% | 2369 fps | 97.7% |
| Hodgdon H4350 | <<locked>> | 80% | 41,553 psi | 68% | 2385 fps | 97.2% |
| Hodgdon H4831 | <<locked>> | 92% | 44,077 psi | 72% | 2461 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 92% | 43,105 psi | 71% | 2441 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,214 psi | 55% | 2238 fps | 99.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,952 psi | 84% | 2536 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 34,664 psi | 57% | 2398 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 37,275 psi | 61% | 2379 fps | 97% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,122 psi | 45% | 1394 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,935 psi | 79% | 2441 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,198 psi | 82% | 2470 fps | 99.5% |
| IMR 4350 | <<locked>> | 80% | 36,405 psi | 60% | 2274 fps | 96.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,177 psi | 69% | 2365 fps | 98.3% |
| IMR 4831 | <<locked>> | 80% | 35,027 psi | 57% | 2283 fps | 99% |
| IMR 4895 | <<locked>> | 80% | 50,401 psi | 83% | 2520 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 43,308 psi | 71% | 2408 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 94% | 41,829 psi | 69% | 2480 fps | 95.6% |
| Lovex S062 | <<locked>> | 80% | 48,080 psi | 79% | 2434 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,552 psi | 65% | 2320 fps | 98.9% |
| Lovex S070 | <<locked>> | 80% | 37,739 psi | 62% | 2303 fps | 97.6% |
| Lovex S071 | <<locked>> | 88% | 29,472 psi | 48% | 2165 fps | 95.7% |
| Norma 203B | <<locked>> | 80% | 48,486 psi | 80% | 2484 fps | 100% |
| Norma 204 | <<locked>> | 82% | 38,203 psi | 63% | 2349 fps | 95.7% |
| Norma MRP | 81.3 gr | 84% | 32,010 psi | 53% | 2306 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 36,361 psi | 60% | 2320 fps | 99.1% |
| Ramshot Big Game | <<locked>> | 80% | 48,718 psi | 80% | 2507 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 41,466 psi | 68% | 2487 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 35,186 psi | 58% | 2310 fps | 97.6% |
| Ramshot Magnum | <<locked>> | 92% | 34,069 psi | 56% | 2316 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,630 psi | 45% | 1427 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,673 psi | 77% | 2444 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 42,989 psi | 71% | 2487 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,071 psi | 59% | 2339 fps | 99% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 35,172 psi | 58% | 2352 fps | 98.6% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 33,866 psi | 56% | 2382 fps | 96% |
| Rottweil R 902 | <<locked>> | 80% | 49,777 psi | 82% | 2441 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,381 psi | 71% | 2395 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 42,047 psi | 69% | 2395 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 86% | 36,492 psi | 60% | 2339 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 40,596 psi | 67% | 2336 fps | 97.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,552 psi | 65% | 2320 fps | 98.9% |
| Shooters World Precision | <<locked>> | 80% | 48,080 psi | 79% | 2434 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 37,739 psi | 62% | 2303 fps | 97.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,614 psi | 73% | 2448 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,875 psi | 74% | 2303 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,566 psi | 63% | 2267 fps | 97.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 36,143 psi | 59% | 2333 fps | 95.5% |
| Somchem S355 | <<locked>> | 80% | 43,816 psi | 72% | 2395 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 42,859 psi | 70% | 2385 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 32,764 psi | 54% | 2280 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 32,503 psi | 53% | 2228 fps | 95.1% |
| Vihtavuori N135 | <<locked>> | 80% | 50,067 psi | 82% | 2402 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 50,415 psi | 83% | 2421 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,785 psi | 69% | 2333 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 37,797 psi | 62% | 2316 fps | 99.3% |
| Vihtavuori N165 | <<locked>> | 88% | 34,200 psi | 56% | 2257 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 48,559 psi | 80% | 2421 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,159 psi | 61% | 2320 fps | 99.1% |
| Vihtavuori N555 | <<locked>> | 80% | 28,355 psi | 47% | 2185 fps | 97.7% |
| Vihtavuori N560 | 89 gr | 92% | 42,728 psi | 70% | 2513 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 98% | 41,249 psi | 68% | 2487 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,825 psi | 60% | 2290 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 38,624 psi | 63% | 2372 fps | 97.7% |
| Winchester StaBALL HD | <<locked>> | 80% | 22,669 psi | 37% | 2096 fps | 96.7% |
| Winchester Supreme 780 | <<locked>> | 88% | 36,506 psi | 60% | 2310 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 91 powders for .375 Swiss P loaded with the .375 | 320gr | CutEdge MTH. Alliant Reloder-26 delivers the highest muzzle velocity at 2,726 fps; across all powders the maximum-charge window runs from 1,562 fps to 2,726 fps. Accurate 3100 gives the best case fill at 100 %, and 91 of the 91 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 320.0 gr projectile in 0.375" calls for a 1:12.5 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. Alliant Reloder-26, Norma MRP, Vihtavuori N560 rank at the top here: for .375 Swiss P with the .375 | 320gr | CutEdge MTH 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.