Load Specifications
Load data in caliber .375 Swiss P with .375 | 300gr | Barnes Solid bullet and 82 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Vihtavuori N560 and Alliant Reloder-26.
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 3100 | <<locked>> | 98% | 53,824 psi | 88% | 2700 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 52,199 psi | 86% | 2687 fps | 100% |
| Accurate High Country | <<locked>> | 96% | 54,984 psi | 90% | 2844 fps | 98.7% |
| Accurate MAGPRO | <<locked>> | 96% | 52,025 psi | 85% | 2785 fps | 97.1% |
| ADI AR 2208 | <<locked>> | 84% | 54,752 psi | 90% | 2657 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 53,113 psi | 87% | 2740 fps | 99% |
| ADI AR 2213 | <<locked>> | 98% | 54,244 psi | 89% | 2792 fps | 98.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 37,347 psi | 61% | 2530 fps | 97.5% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 53,301 psi | 88% | 2736 fps | 99% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 53,301 psi | 88% | 2736 fps | 99% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 52,359 psi | 86% | 2635 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 53,156 psi | 87% | 2743 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 54,157 psi | 89% | 2759 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 52,605 psi | 86% | 2726 fps | 99% |
| Alliant Reloder-22 | <<locked>> | 98% | 53,548 psi | 88% | 2785 fps | 99.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 54,172 psi | 89% | 2762 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,963 psi | 77% | 2710 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 96% | 54,230 psi | 89% | 2851 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 52,388 psi | 86% | 2769 fps | 99% |
| Bofors RP3 | <<locked>> | 82% | 53,055 psi | 87% | 2648 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 42,772 psi | 70% | 2638 fps | 96.6% |
| Bofors RP5 | <<locked>> | 98% | 53,548 psi | 88% | 2785 fps | 99.2% |
| Bofors RP7 | <<locked>> | 86% | 52,533 psi | 86% | 2644 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 46,441 psi | 76% | 2654 fps | 97.5% |
| Hodgdon H380 | <<locked>> | 82% | 53,301 psi | 88% | 2667 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 54,259 psi | 89% | 2743 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 86% | 53,824 psi | 88% | 2700 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 96% | 54,317 psi | 89% | 2733 fps | 97.7% |
| Hodgdon H4831 SC | <<locked>> | 96% | 53,229 psi | 87% | 2717 fps | 97.5% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 53,490 psi | 88% | 2671 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 45,992 psi | 76% | 2756 fps | 98.8% |
| Hodgdon Superformance | <<locked>> | 88% | 54,201 psi | 89% | 2776 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,608 psi | 60% | 1657 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 54,230 psi | 89% | 2641 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 53,490 psi | 88% | 2677 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 86% | 53,911 psi | 89% | 2664 fps | 99.7% |
| IMR 4831 | <<locked>> | 90% | 52,794 psi | 87% | 2684 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 52,605 psi | 86% | 2671 fps | 97.5% |
| IMR 7828 SSC | <<locked>> | 98% | 51,793 psi | 85% | 2766 fps | 98% |
| Lovex S062 | <<locked>> | 82% | 54,549 psi | 90% | 2631 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 54,273 psi | 89% | 2664 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 52,286 psi | 86% | 2657 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,979 psi | 79% | 2615 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 54,070 psi | 89% | 2726 fps | 99% |
| Norma MRP | <<locked>> | 96% | 53,026 psi | 87% | 2812 fps | 99.8% |
| Norma URP | <<locked>> | 90% | 54,563 psi | 90% | 2726 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 52,127 psi | 86% | 2782 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 90% | 53,229 psi | 87% | 2730 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 49,995 psi | 82% | 2720 fps | 99.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,391 psi | 61% | 1696 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 53,171 psi | 87% | 2654 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 53,505 psi | 88% | 2746 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 51,996 psi | 85% | 2710 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 53,969 psi | 89% | 2792 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 45,890 psi | 75% | 2749 fps | 99.5% |
| Rottweil R 903 | <<locked>> | 84% | 53,287 psi | 87% | 2648 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 54,650 psi | 90% | 2707 fps | 98.3% |
| Rottweil R 905 | <<locked>> | 94% | 51,764 psi | 85% | 2713 fps | 99% |
| Rottweil R 907 | <<locked>> | 86% | 52,533 psi | 86% | 2644 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 88% | 54,273 psi | 89% | 2664 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 54,549 psi | 90% | 2631 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 52,286 psi | 86% | 2657 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 54,563 psi | 90% | 2703 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 53,911 psi | 89% | 2530 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 53,621 psi | 88% | 2618 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 54,911 psi | 90% | 2762 fps | 99.3% |
| Somchem S355 | <<locked>> | 84% | 53,272 psi | 87% | 2641 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 52,721 psi | 87% | 2651 fps | 97.3% |
| Somchem S365 | <<locked>> | 92% | 54,041 psi | 89% | 2726 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 52,402 psi | 86% | 2690 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 86% | 54,273 psi | 89% | 2615 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 52,953 psi | 87% | 2667 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 51,735 psi | 85% | 2667 fps | 99.2% |
| Vihtavuori N540 | <<locked>> | 82% | 55,114 psi | 90% | 2615 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 52,156 psi | 86% | 2674 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 53,229 psi | 87% | 2740 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 53,243 psi | 87% | 2802 fps | 97.9% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 48,834 psi | 80% | 2717 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 52,315 psi | 86% | 2635 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 54,476 psi | 89% | 2743 fps | 99.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 49,850 psi | 82% | 2838 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 52,301 psi | 86% | 2684 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 3100 | <<locked>> | 80% | 29,356 psi | 48% | 2241 fps | 95.4% |
| Accurate 4350 | <<locked>> | 80% | 39,827 psi | 65% | 2484 fps | 99.6% |
| Accurate High Country | <<locked>> | 88% | 41,756 psi | 69% | 2615 fps | 95.9% |
| Accurate MAGPRO | <<locked>> | 92% | 45,295 psi | 74% | 2671 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 80% | 48,414 psi | 79% | 2566 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 38,406 psi | 63% | 2467 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 90% | 41,640 psi | 68% | 2562 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 96% | 32,996 psi | 54% | 2418 fps | 95.5% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 36,143 psi | 59% | 2418 fps | 95% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 36,143 psi | 59% | 2418 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 49,197 psi | 81% | 2585 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,566 psi | 63% | 2493 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,816 psi | 72% | 2605 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 38,130 psi | 63% | 2464 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 86% | 35,911 psi | 59% | 2457 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,355 psi | 47% | 2270 fps | 98.5% |
| Alliant Reloder-25 | <<locked>> | 84% | 28,369 psi | 47% | 2283 fps | 95.3% |
| Alliant Reloder-26 | 88.2 gr | 80% | 30,371 psi | 50% | 2385 fps | 97.3% |
| Bofors RP15 | <<locked>> | 90% | 38,014 psi | 62% | 2503 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 49,690 psi | 82% | 2602 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 40,132 psi | 66% | 2585 fps | 95.8% |
| Bofors RP5 | <<locked>> | 86% | 35,911 psi | 59% | 2457 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 43,497 psi | 71% | 2490 fps | 98.1% |
| Hodgdon H1000 | <<locked>> | 96% | 40,683 psi | 67% | 2539 fps | 95.8% |
| Hodgdon H380 | <<locked>> | 80% | 49,922 psi | 82% | 2615 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 41,698 psi | 68% | 2530 fps | 98.3% |
| Hodgdon H4350 | <<locked>> | 80% | 44,483 psi | 73% | 2543 fps | 97.8% |
| Hodgdon H4831 | <<locked>> | 90% | 44,498 psi | 73% | 2572 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 90% | 43,671 psi | 72% | 2556 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,216 psi | 59% | 2388 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 92% | 35,534 psi | 58% | 2516 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 40,466 psi | 66% | 2543 fps | 97.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,398 psi | 45% | 1480 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,952 psi | 84% | 2592 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 39,131 psi | 64% | 2428 fps | 97.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,831 psi | 74% | 2516 fps | 98.7% |
| IMR 4831 | <<locked>> | 80% | 38,189 psi | 63% | 2438 fps | 99.4% |
| IMR 4955 Enduron | <<locked>> | 88% | 43,569 psi | 72% | 2516 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 92% | 42,467 psi | 70% | 2595 fps | 95.7% |
| Lovex S062 | <<locked>> | 80% | 51,329 psi | 84% | 2589 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 42,409 psi | 70% | 2470 fps | 99.2% |
| Lovex S070 | <<locked>> | 80% | 40,654 psi | 67% | 2457 fps | 98.2% |
| Lovex S071 | <<locked>> | 84% | 28,805 psi | 47% | 2228 fps | 95.1% |
| Norma 204 | <<locked>> | 80% | 38,595 psi | 63% | 2454 fps | 95.7% |
| Norma MRP | 87.7 gr | 82% | 32,735 psi | 54% | 2411 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 39,407 psi | 65% | 2474 fps | 99.5% |
| Ramshot Grand | <<locked>> | 90% | 39,349 psi | 65% | 2543 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 38,247 psi | 63% | 2467 fps | 98.2% |
| Ramshot Magnum | <<locked>> | 90% | 34,940 psi | 57% | 2428 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,036 psi | 46% | 1516 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,763 psi | 82% | 2602 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,528 psi | 76% | 2648 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,653 psi | 65% | 2503 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 38,189 psi | 63% | 2513 fps | 99.2% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 32,489 psi | 53% | 2434 fps | 95% |
| Rottweil R 903 | <<locked>> | 80% | 46,804 psi | 77% | 2549 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 42,424 psi | 70% | 2500 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 84% | 37,333 psi | 61% | 2448 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 43,497 psi | 71% | 2490 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,409 psi | 70% | 2470 fps | 99.2% |
| Shooters World Precision | <<locked>> | 80% | 51,329 psi | 84% | 2589 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,654 psi | 67% | 2457 fps | 98.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,950 psi | 79% | 2605 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,819 psi | 79% | 2448 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,524 psi | 68% | 2421 fps | 98.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 36,985 psi | 61% | 2444 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 46,934 psi | 77% | 2546 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 43,250 psi | 71% | 2490 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 36,042 psi | 59% | 2438 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 33,243 psi | 55% | 2329 fps | 95.1% |
| Vihtavuori N150 | <<locked>> | 80% | 44,846 psi | 74% | 2480 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,828 psi | 67% | 2470 fps | 99.6% |
| Vihtavuori N165 | <<locked>> | 86% | 34,983 psi | 57% | 2365 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 51,750 psi | 85% | 2569 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 40,248 psi | 66% | 2474 fps | 99.5% |
| Vihtavuori N555 | <<locked>> | 80% | 31,531 psi | 52% | 2343 fps | 98.5% |
| Vihtavuori N560 | 96.3 gr | 90% | 43,511 psi | 71% | 2631 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 96% | 42,670 psi | 70% | 2608 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,827 psi | 65% | 2441 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 41,829 psi | 69% | 2530 fps | 98.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,092 psi | 41% | 2264 fps | 98.1% |
| Winchester Supreme 780 | <<locked>> | 86% | 37,086 psi | 61% | 2415 fps | 95.4% |
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 82 powders for .375 Swiss P loaded with the .375 | 300gr | Barnes Solid. Alliant Reloder-26 delivers the highest muzzle velocity at 2,851 fps; across all powders the maximum-charge window runs from 1,657 fps to 2,851 fps. ADI AR 2225 gives the best case fill at 100 %, and 82 of the 82 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 300.0 gr projectile in 0.375" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-23, Alliant Reloder-25 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. Norma MRP, Vihtavuori N560, Alliant Reloder-26 rank at the top here: for .375 Swiss P with the .375 | 300gr | Barnes Solid 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.