Load Specifications
Load data in caliber .375 R Verney-Carron with .375 | 305gr | Hammer Claw Hammer bullet and 83 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 2700 | <<locked>> | 82% | 53,026 psi | 89% | 2562 fps | 99.2% |
| Accurate 3100 | <<locked>> | 98% | 50,575 psi | 85% | 2608 fps | 99.8% |
| Accurate 4064 | <<locked>> | 82% | 52,649 psi | 89% | 2546 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 52,953 psi | 89% | 2651 fps | 100% |
| Accurate MAGPRO | <<locked>> | 98% | 52,460 psi | 88% | 2746 fps | 96.9% |
| ADI AR 2208 | <<locked>> | 84% | 52,504 psi | 88% | 2579 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 53,766 psi | 90% | 2697 fps | 98.9% |
| ADI AR 2213 | <<locked>> | 98% | 51,488 psi | 87% | 2694 fps | 97.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 35,317 psi | 59% | 2431 fps | 96.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 53,359 psi | 90% | 2598 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 53,548 psi | 90% | 2618 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 53,766 psi | 90% | 2703 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 51,213 psi | 86% | 2674 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 53,127 psi | 89% | 2687 fps | 98.9% |
| Alliant Reloder-22 | <<locked>> | 98% | 50,473 psi | 85% | 2694 fps | 98.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 50,952 psi | 86% | 2674 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,222 psi | 74% | 2615 fps | 99.8% |
| Alliant Reloder-26 | <<locked>> | 96% | 50,546 psi | 85% | 2753 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 49,356 psi | 83% | 2674 fps | 98.4% |
| Bofors RP3 | <<locked>> | 82% | 50,531 psi | 85% | 2566 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 50,473 psi | 85% | 2694 fps | 98.7% |
| Bofors RP7 | <<locked>> | 88% | 53,476 psi | 90% | 2605 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 44,034 psi | 74% | 2556 fps | 96.5% |
| Hodgdon H380 | <<locked>> | 82% | 50,952 psi | 86% | 2582 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 51,474 psi | 87% | 2651 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 86% | 51,474 psi | 87% | 2612 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 96% | 51,488 psi | 87% | 2638 fps | 96.9% |
| Hodgdon H4831 SC | <<locked>> | 96% | 50,502 psi | 85% | 2621 fps | 96.7% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 50,676 psi | 85% | 2585 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 43,424 psi | 73% | 2654 fps | 98% |
| Hodgdon Superformance | <<locked>> | 88% | 51,126 psi | 86% | 2684 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,463 psi | 61% | 1611 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 52,098 psi | 88% | 2559 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 51,068 psi | 86% | 2592 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 86% | 51,721 psi | 87% | 2582 fps | 99.4% |
| IMR 4831 | <<locked>> | 92% | 53,374 psi | 90% | 2644 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 53,316 psi | 90% | 2631 fps | 97.4% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 52,417 psi | 88% | 2720 fps | 97.8% |
| Lovex S062 | <<locked>> | 82% | 52,402 psi | 88% | 2556 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 51,895 psi | 87% | 2579 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 53,011 psi | 89% | 2621 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 45,063 psi | 76% | 2523 fps | 99.3% |
| Norma 203B | <<locked>> | 82% | 52,837 psi | 89% | 2605 fps | 100% |
| Norma 204 | <<locked>> | 90% | 51,416 psi | 86% | 2638 fps | 98.4% |
| Norma MRP | <<locked>> | 98% | 53,359 psi | 90% | 2766 fps | 99.8% |
| Norma URP | <<locked>> | 90% | 51,735 psi | 87% | 2638 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 53,287 psi | 90% | 2631 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 52,692 psi | 89% | 2736 fps | 98.2% |
| Ramshot Hunter | <<locked>> | 90% | 50,531 psi | 85% | 2644 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 46,978 psi | 79% | 2621 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,275 psi | 63% | 1650 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 50,952 psi | 86% | 2569 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 50,821 psi | 85% | 2667 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 52,692 psi | 89% | 2674 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 51,082 psi | 86% | 2700 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 43,192 psi | 73% | 2644 fps | 98.8% |
| Rottweil R 903 | <<locked>> | 84% | 50,763 psi | 85% | 2566 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 52,083 psi | 88% | 2618 fps | 97.7% |
| Rottweil R 905 | <<locked>> | 96% | 52,315 psi | 88% | 2674 fps | 98.9% |
| Rottweil R 907 | <<locked>> | 88% | 53,476 psi | 90% | 2605 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 88% | 51,895 psi | 87% | 2579 fps | 99.9% |
| Shooters World Precision | <<locked>> | 82% | 52,402 psi | 88% | 2556 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 53,011 psi | 89% | 2621 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 52,040 psi | 88% | 2618 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 51,880 psi | 87% | 2457 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 51,329 psi | 86% | 2533 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 51,924 psi | 87% | 2667 fps | 98.8% |
| Somchem S355 | <<locked>> | 84% | 50,995 psi | 86% | 2562 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 53,635 psi | 90% | 2612 fps | 97.2% |
| Somchem S365 | <<locked>> | 92% | 50,981 psi | 86% | 2641 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 52,997 psi | 89% | 2651 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 86% | 51,924 psi | 87% | 2536 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 50,357 psi | 85% | 2582 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 52,272 psi | 88% | 2628 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 82% | 52,852 psi | 89% | 2536 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 52,794 psi | 89% | 2638 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 53,476 psi | 90% | 2697 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 53,693 psi | 90% | 2759 fps | 97.7% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 45,774 psi | 77% | 2621 fps | 96.3% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 53,098 psi | 89% | 2598 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 51,663 psi | 87% | 2654 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 45,977 psi | 77% | 2736 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 52,968 psi | 89% | 2644 fps | 98.7% |
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 2700 | <<locked>> | 80% | 49,676 psi | 84% | 2513 fps | 98.8% |
| Accurate 3100 | <<locked>> | 82% | 29,631 psi | 50% | 2211 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 49,414 psi | 83% | 2503 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,739 psi | 63% | 2402 fps | 99.2% |
| Accurate MAGPRO | <<locked>> | 94% | 45,571 psi | 77% | 2628 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 46,514 psi | 78% | 2484 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 39,015 psi | 66% | 2434 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 92% | 42,177 psi | 71% | 2523 fps | 95% |
| ADI AR 2225 | <<locked>> | 98% | 33,257 psi | 56% | 2379 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,065 psi | 79% | 2507 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,256 psi | 85% | 2572 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,796 psi | 62% | 2408 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,495 psi | 70% | 2520 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 38,682 psi | 65% | 2428 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 88% | 36,332 psi | 61% | 2425 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,963 psi | 45% | 2192 fps | 97.8% |
| Alliant Reloder-25 | <<locked>> | 86% | 28,674 psi | 48% | 2251 fps | 95.1% |
| Alliant Reloder-26 | 82.5 gr | 80% | 28,601 psi | 48% | 2293 fps | 96.2% |
| Bofors RP15 | <<locked>> | 92% | 38,232 psi | 64% | 2464 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 47,384 psi | 80% | 2520 fps | 100% |
| Bofors RP5 | <<locked>> | 88% | 36,332 psi | 61% | 2425 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 41,800 psi | 70% | 2411 fps | 97.5% |
| Hodgdon H1000 | <<locked>> | 98% | 41,263 psi | 69% | 2500 fps | 95.6% |
| Hodgdon H380 | <<locked>> | 80% | 47,659 psi | 80% | 2530 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 39,624 psi | 67% | 2444 fps | 97.7% |
| Hodgdon H4350 | <<locked>> | 80% | 42,554 psi | 72% | 2457 fps | 97.1% |
| Hodgdon H4831 | <<locked>> | 92% | 45,092 psi | 76% | 2530 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 92% | 44,208 psi | 74% | 2513 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,330 psi | 58% | 2310 fps | 99.6% |
| Hodgdon Retumbo | <<locked>> | 94% | 35,897 psi | 60% | 2477 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 38,435 psi | 65% | 2454 fps | 97% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,354 psi | 46% | 1440 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,936 psi | 82% | 2513 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 37,405 psi | 63% | 2346 fps | 96.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,163 psi | 73% | 2438 fps | 98.2% |
| IMR 4831 | <<locked>> | 80% | 36,274 psi | 61% | 2356 fps | 99% |
| IMR 4955 Enduron | <<locked>> | 90% | 44,295 psi | 74% | 2480 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 94% | 43,047 psi | 72% | 2556 fps | 95.5% |
| Lovex S062 | <<locked>> | 80% | 49,226 psi | 83% | 2510 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,683 psi | 68% | 2392 fps | 98.8% |
| Lovex S070 | <<locked>> | 80% | 38,841 psi | 65% | 2375 fps | 97.6% |
| Lovex S071 | <<locked>> | 86% | 28,906 psi | 49% | 2195 fps | 95% |
| Norma 203B | <<locked>> | 80% | 49,647 psi | 83% | 2559 fps | 100% |
| Norma 204 | <<locked>> | 82% | 39,363 psi | 66% | 2425 fps | 95.6% |
| Norma MRP | 84.1 gr | 84% | 33,141 psi | 56% | 2379 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 37,449 psi | 63% | 2392 fps | 99.1% |
| Ramshot Big Game | <<locked>> | 80% | 49,922 psi | 84% | 2582 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 42,627 psi | 72% | 2559 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 36,332 psi | 61% | 2385 fps | 97.6% |
| Ramshot Magnum | <<locked>> | 92% | 35,375 psi | 59% | 2395 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,862 psi | 47% | 1473 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,747 psi | 80% | 2520 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,121 psi | 74% | 2566 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,333 psi | 63% | 2418 fps | 99% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,274 psi | 61% | 2428 fps | 98.6% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 35,143 psi | 59% | 2461 fps | 96% |
| Rottweil R 903 | <<locked>> | 80% | 44,628 psi | 75% | 2470 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 43,207 psi | 73% | 2467 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 86% | 37,710 psi | 63% | 2415 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 41,800 psi | 70% | 2411 fps | 97.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,683 psi | 68% | 2392 fps | 98.8% |
| Shooters World Precision | <<locked>> | 80% | 49,226 psi | 83% | 2510 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,841 psi | 65% | 2375 fps | 97.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,759 psi | 77% | 2523 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,919 psi | 77% | 2375 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,682 psi | 67% | 2339 fps | 97.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 37,347 psi | 63% | 2408 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 44,947 psi | 76% | 2470 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 44,092 psi | 74% | 2457 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 33,997 psi | 57% | 2356 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 33,620 psi | 57% | 2297 fps | 95% |
| Vihtavuori N150 | <<locked>> | 80% | 42,859 psi | 72% | 2402 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,914 psi | 65% | 2392 fps | 99.3% |
| Vihtavuori N165 | <<locked>> | 88% | 35,288 psi | 59% | 2329 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 49,588 psi | 83% | 2493 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,247 psi | 64% | 2392 fps | 99.1% |
| Vihtavuori N555 | <<locked>> | 80% | 29,747 psi | 50% | 2264 fps | 97.8% |
| Vihtavuori N560 | 92.1 gr | 92% | 43,918 psi | 74% | 2592 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 98% | 42,757 psi | 72% | 2566 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,884 psi | 64% | 2362 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 39,769 psi | 67% | 2444 fps | 97.7% |
| Winchester StaBALL HD | <<locked>> | 80% | 23,786 psi | 40% | 2175 fps | 96.9% |
| Winchester Supreme 780 | <<locked>> | 88% | 37,652 psi | 63% | 2382 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 89 powders for .375 R Verney-Carron loaded with the .375 | 305gr | Hammer Claw Hammer . Norma MRP delivers the highest muzzle velocity at 2,766 fps; across all powders the maximum-charge window runs from 1,611 fps to 2,766 fps. ADI AR 2217 gives the best case fill at 100 %, and 89 of the 89 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (410 MPa), the top charges use 52–90 %, leaving at least 10 % headroom. The 305.0 gr projectile in 0.375" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-23 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 R Verney-Carron with the .375 | 305gr | Hammer Claw Hammer they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, Baschieri & Pellagri 109, Norma 217 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.