Load Specifications
Load data in caliber .375 R Verney-Carron with .375 | 300gr | Speer AGS TBSS 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.
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Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2700 | <<locked>> | 84% | 52,170 psi | 88% | 2579 fps | 99.2% |
| Accurate 3100 | <<locked>> | 98% | 52,388 psi | 88% | 2667 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 50,995 psi | 86% | 2657 fps | 100% |
| Accurate MAGPRO | <<locked>> | 98% | 51,343 psi | 86% | 2753 fps | 96% |
| ADI AR 2208 | <<locked>> | 82% | 50,618 psi | 85% | 2585 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 51,880 psi | 87% | 2703 fps | 98.7% |
| ADI AR 2213 | <<locked>> | 98% | 53,026 psi | 89% | 2753 fps | 97.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 36,492 psi | 61% | 2493 fps | 96.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 51,445 psi | 87% | 2605 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 51,996 psi | 87% | 2713 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 52,808 psi | 89% | 2730 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 51,387 psi | 86% | 2694 fps | 98.7% |
| Alliant Reloder-22 | <<locked>> | 98% | 52,199 psi | 88% | 2753 fps | 98.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 52,866 psi | 89% | 2730 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 45,832 psi | 77% | 2677 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 96% | 52,620 psi | 88% | 2815 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 51,242 psi | 86% | 2736 fps | 98.7% |
| Bofors RP3 | <<locked>> | 82% | 51,996 psi | 87% | 2618 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 41,640 psi | 70% | 2602 fps | 96.1% |
| Bofors RP5 | <<locked>> | 98% | 52,199 psi | 88% | 2753 fps | 98.9% |
| Bofors RP7 | <<locked>> | 86% | 51,474 psi | 87% | 2612 fps | 99.2% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 42,511 psi | 71% | 2562 fps | 96.2% |
| Hodgdon H380 | <<locked>> | 82% | 52,286 psi | 88% | 2638 fps | 100% |
| Hodgdon H414 | <<locked>> | 84% | 50,763 psi | 85% | 2674 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 88% | 51,503 psi | 87% | 2648 fps | 98.8% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 52,286 psi | 88% | 2687 fps | 97.1% |
| Hodgdon H4831 SC | <<locked>> | 96% | 52,127 psi | 88% | 2684 fps | 97.1% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 52,199 psi | 88% | 2638 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 44,918 psi | 76% | 2717 fps | 98.4% |
| Hodgdon Superformance | <<locked>> | 88% | 52,968 psi | 89% | 2743 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,608 psi | 62% | 1644 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 53,476 psi | 90% | 2621 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 52,924 psi | 89% | 2605 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 51,793 psi | 87% | 2589 fps | 99.5% |
| IMR 4350 | <<locked>> | 90% | 52,562 psi | 88% | 2648 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 86% | 53,055 psi | 89% | 2638 fps | 99.6% |
| IMR 4831 | <<locked>> | 94% | 52,721 psi | 89% | 2667 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 51,474 psi | 87% | 2638 fps | 97.1% |
| IMR 7828 SSC | <<locked>> | 96% | 51,024 psi | 86% | 2733 fps | 97.7% |
| Lovex S062 | <<locked>> | 82% | 53,577 psi | 90% | 2605 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 53,200 psi | 89% | 2635 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 51,300 psi | 86% | 2628 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 46,731 psi | 79% | 2582 fps | 99.5% |
| Norma 204 | <<locked>> | 90% | 52,997 psi | 89% | 2694 fps | 98.7% |
| Norma MRP | <<locked>> | 96% | 51,648 psi | 87% | 2772 fps | 99.7% |
| Norma URP | <<locked>> | 90% | 53,417 psi | 90% | 2697 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 50,415 psi | 85% | 2736 fps | 97.9% |
| Ramshot Hunter | <<locked>> | 90% | 52,141 psi | 88% | 2700 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 98% | 50,792 psi | 85% | 2717 fps | 99.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,391 psi | 63% | 1683 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 52,141 psi | 88% | 2621 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 52,272 psi | 88% | 2717 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 50,792 psi | 85% | 2680 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 52,794 psi | 89% | 2759 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 44,817 psi | 75% | 2713 fps | 99.2% |
| Rottweil R 903 | <<locked>> | 84% | 52,185 psi | 88% | 2618 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 53,606 psi | 90% | 2674 fps | 98% |
| Rottweil R 905 | <<locked>> | 94% | 50,662 psi | 85% | 2680 fps | 98.7% |
| Rottweil R 907 | <<locked>> | 86% | 51,474 psi | 87% | 2612 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 88% | 53,200 psi | 89% | 2635 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 53,577 psi | 90% | 2605 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 51,300 psi | 86% | 2628 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 53,621 psi | 90% | 2674 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 53,171 psi | 89% | 2507 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 52,678 psi | 89% | 2589 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 53,606 psi | 90% | 2726 fps | 99.1% |
| Somchem S355 | <<locked>> | 84% | 52,243 psi | 88% | 2615 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 51,576 psi | 87% | 2618 fps | 96.9% |
| Somchem S365 | <<locked>> | 92% | 52,721 psi | 89% | 2697 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 51,358 psi | 86% | 2661 fps | 99.2% |
| Unknown powder | <<locked>> | 86% | 50,459 psi | 85% | 2648 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 53,316 psi | 90% | 2589 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 51,866 psi | 87% | 2638 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 50,488 psi | 85% | 2635 fps | 98.9% |
| Vihtavuori N550 | <<locked>> | 88% | 51,184 psi | 86% | 2648 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 52,054 psi | 88% | 2710 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 51,953 psi | 87% | 2766 fps | 97.5% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 47,616 psi | 80% | 2684 fps | 96.8% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 51,126 psi | 86% | 2605 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 50,763 psi | 85% | 2674 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 48,008 psi | 81% | 2799 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 52,779 psi | 89% | 2677 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 2700 | <<locked>> | 80% | 45,803 psi | 77% | 2477 fps | 98.2% |
| Accurate 3100 | <<locked>> | 82% | 30,632 psi | 52% | 2264 fps | 95.8% |
| Accurate 4350 | <<locked>> | 80% | 38,899 psi | 65% | 2451 fps | 99.4% |
| Accurate MAGPRO | <<locked>> | 96% | 47,921 psi | 81% | 2694 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 47,688 psi | 80% | 2539 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 37,608 psi | 63% | 2434 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 92% | 43,439 psi | 73% | 2582 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 98% | 34,316 psi | 58% | 2438 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,283 psi | 81% | 2559 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,710 psi | 63% | 2461 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 42,946 psi | 72% | 2575 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 37,333 psi | 63% | 2431 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 88% | 37,521 psi | 63% | 2480 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,804 psi | 47% | 2241 fps | 98.2% |
| Alliant Reloder-25 | <<locked>> | 86% | 29,530 psi | 50% | 2303 fps | 95.7% |
| Alliant Reloder-26 | 86 gr | 80% | 29,588 psi | 50% | 2349 fps | 96.7% |
| Bofors RP15 | <<locked>> | 90% | 37,159 psi | 62% | 2470 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 48,704 psi | 82% | 2572 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 39,044 psi | 66% | 2546 fps | 95.2% |
| Bofors RP5 | <<locked>> | 88% | 37,521 psi | 63% | 2480 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 42,830 psi | 72% | 2464 fps | 97.8% |
| Hodgdon H1000 | <<locked>> | 98% | 39,827 psi | 67% | 2503 fps | 95.2% |
| Hodgdon H380 | <<locked>> | 80% | 49,023 psi | 82% | 2585 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 44,208 psi | 74% | 2562 fps | 98.7% |
| Hodgdon H4350 | <<locked>> | 80% | 40,176 psi | 68% | 2444 fps | 96.5% |
| Hodgdon H4831 | <<locked>> | 96% | 46,021 psi | 77% | 2582 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 92% | 45,571 psi | 77% | 2572 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,346 psi | 59% | 2359 fps | 99.8% |
| Hodgdon Retumbo | <<locked>> | 94% | 37,101 psi | 62% | 2539 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 39,610 psi | 67% | 2510 fps | 97.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,427 psi | 46% | 1467 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,212 psi | 84% | 2572 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,876 psi | 79% | 2513 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 45,818 psi | 77% | 2490 fps | 98.8% |
| IMR 4350 | <<locked>> | 80% | 38,377 psi | 65% | 2395 fps | 96.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,150 psi | 74% | 2487 fps | 98.5% |
| IMR 4831 | <<locked>> | 80% | 33,939 psi | 57% | 2333 fps | 98.5% |
| IMR 4955 Enduron | <<locked>> | 88% | 42,830 psi | 72% | 2487 fps | 95% |
| IMR 7828 SSC | <<locked>> | 90% | 41,684 psi | 70% | 2562 fps | 95.2% |
| Lovex S062 | <<locked>> | 80% | 50,488 psi | 85% | 2562 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,742 psi | 70% | 2441 fps | 99% |
| Lovex S070 | <<locked>> | 80% | 39,972 psi | 67% | 2428 fps | 97.9% |
| Lovex S071 | <<locked>> | 86% | 30,023 psi | 50% | 2247 fps | 95.5% |
| Norma 204 | <<locked>> | 80% | 37,768 psi | 64% | 2421 fps | 95.2% |
| Norma MRP | 87.7 gr | 84% | 34,287 psi | 58% | 2438 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 38,667 psi | 65% | 2448 fps | 99.3% |
| Ramshot Grand | <<locked>> | 88% | 40,451 psi | 68% | 2549 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 37,333 psi | 63% | 2434 fps | 97.9% |
| Ramshot Magnum | <<locked>> | 88% | 35,070 psi | 59% | 2418 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,934 psi | 47% | 1503 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,965 psi | 82% | 2572 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,614 psi | 77% | 2618 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,711 psi | 65% | 2470 fps | 99.2% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,420 psi | 63% | 2484 fps | 98.9% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 33,924 psi | 57% | 2457 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 80% | 45,992 psi | 77% | 2526 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 41,626 psi | 70% | 2470 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 84% | 36,448 psi | 61% | 2415 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 42,830 psi | 72% | 2464 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,742 psi | 70% | 2441 fps | 99% |
| Shooters World Precision | <<locked>> | 80% | 50,488 psi | 85% | 2562 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,972 psi | 67% | 2428 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,963 psi | 79% | 2575 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,007 psi | 79% | 2421 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,770 psi | 69% | 2392 fps | 97.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 36,100 psi | 61% | 2411 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 46,137 psi | 78% | 2520 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 45,339 psi | 76% | 2513 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 35,128 psi | 59% | 2408 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 34,722 psi | 58% | 2349 fps | 95.5% |
| Unknown powder | <<locked>> | 80% | 41,495 psi | 70% | 2493 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 80% | 44,121 psi | 74% | 2454 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,987 psi | 67% | 2441 fps | 99.5% |
| Vihtavuori N165 | <<locked>> | 88% | 36,405 psi | 61% | 2382 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 39,494 psi | 66% | 2448 fps | 99.3% |
| Vihtavuori N555 | <<locked>> | 80% | 30,835 psi | 52% | 2313 fps | 98.2% |
| Vihtavuori N560 | 94 gr | 90% | 42,540 psi | 72% | 2595 fps | 95% |
| Vihtavuori N565 | <<locked>> | 96% | 41,597 psi | 70% | 2572 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,957 psi | 66% | 2411 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 44,208 psi | 74% | 2562 fps | 98.7% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,526 psi | 41% | 2228 fps | 97.5% |
| Winchester Supreme 780 | <<locked>> | 84% | 37,014 psi | 62% | 2398 fps | 95.1% |
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 R Verney-Carron loaded with the .375 | 300gr | Speer AGS TBSS. Alliant Reloder-26 delivers the highest muzzle velocity at 2,815 fps; across all powders the maximum-charge window runs from 1,644 fps to 2,815 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 (410 MPa), the top charges use 61–90 %, 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 R Verney-Carron with the .375 | 300gr | Speer AGS TBSS 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.