Load Specifications
Load data in caliber .375 EnABELR with .375 | 305gr | Hammer Claw Hammer bullet and 63 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ReloadSwiss RS 76 and Vihtavuori N570.
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: 30"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 90% | 57,508 psi | 90% | 2927 fps | 100% |
| Accurate MAGPRO | <<locked>> | 88% | 56,347 psi | 88% | 3051 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 86% | 55,317 psi | 87% | 2966 fps | 100% |
| ADI AR 2213 | <<locked>> | 90% | 57,130 psi | 90% | 3041 fps | 100% |
| ADI AR 2217 | <<locked>> | 98% | 55,434 psi | 87% | 3015 fps | 100% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 51,677 psi | 81% | 3077 fps | 98.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 53,795 psi | 84% | 3038 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 82% | 55,608 psi | 87% | 2943 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 54,882 psi | 86% | 2956 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 90% | 57,493 psi | 90% | 3035 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 90% | 55,651 psi | 87% | 2933 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 55,419 psi | 87% | 3009 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 56,028 psi | 88% | 3028 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 56,855 psi | 89% | 3123 fps | 99.3% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 48,254 psi | 76% | 2979 fps | 97.7% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 54,143 psi | 85% | 2946 fps | 98.9% |
| Bofors RP15 | <<locked>> | 92% | 56,840 psi | 89% | 3025 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 55,114 psi | 86% | 3031 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 57,493 psi | 90% | 3035 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 57,029 psi | 89% | 3035 fps | 100% |
| Hodgdon H4831 | <<locked>> | 88% | 56,550 psi | 89% | 2972 fps | 99.9% |
| Hodgdon H4831 SC | <<locked>> | 88% | 55,463 psi | 87% | 2956 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 55,782 psi | 87% | 2861 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 54,375 psi | 85% | 3104 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,637 psi | 59% | 1841 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 54,288 psi | 85% | 2881 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 54,853 psi | 86% | 2881 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 56,956 psi | 89% | 2946 fps | 100% |
| IMR 7828 SSC | <<locked>> | 90% | 55,448 psi | 87% | 3025 fps | 100% |
| IMR 7977 Enduron | <<locked>> | 94% | 55,405 psi | 87% | 2890 fps | 96.2% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 49,298 psi | 77% | 2963 fps | 99.9% |
| Lovex S070 | <<locked>> | 82% | 56,478 psi | 89% | 2910 fps | 100% |
| Lovex S071 | <<locked>> | 94% | 55,448 psi | 87% | 2897 fps | 100% |
| Norma 204 | <<locked>> | 82% | 55,245 psi | 87% | 2943 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 50,082 psi | 78% | 2986 fps | 100% |
| Norma MRP | <<locked>> | 88% | 57,711 psi | 90% | 3051 fps | 100% |
| Norma URP | <<locked>> | 82% | 56,347 psi | 88% | 2923 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 56,536 psi | 89% | 3045 fps | 100% |
| Ramshot Hunter | <<locked>> | 82% | 55,216 psi | 87% | 2936 fps | 100% |
| Ramshot Magnum | <<locked>> | 92% | 54,839 psi | 86% | 2972 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,609 psi | 61% | 1883 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 56,826 psi | 89% | 2999 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 54,911 psi | 86% | 3094 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 54,172 psi | 85% | 3064 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 86% | 55,927 psi | 88% | 2933 fps | 100% |
| Rottweil R 905 | <<locked>> | 86% | 54,563 psi | 86% | 2946 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 56,478 psi | 89% | 2910 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 56,869 psi | 89% | 2858 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 54,172 psi | 85% | 2943 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 57,334 psi | 90% | 2927 fps | 99.9% |
| Somchem S365 | <<locked>> | 84% | 57,667 psi | 90% | 2923 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 54,998 psi | 86% | 2913 fps | 100% |
| Vihtavuori N165 | <<locked>> | 90% | 54,708 psi | 86% | 2900 fps | 100% |
| Vihtavuori N170 | <<locked>> | 96% | 57,305 psi | 90% | 2989 fps | 98.1% |
| Vihtavuori N550 | <<locked>> | 82% | 57,058 psi | 89% | 2917 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 57,638 psi | 90% | 2959 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 57,174 psi | 90% | 3061 fps | 100% |
| Vihtavuori N565 | <<locked>> | 94% | 57,740 psi | 90% | 3048 fps | 100% |
| Vihtavuori N568 | <<locked>> | 96% | 55,042 psi | 86% | 3064 fps | 99.8% |
| Vihtavuori N570 | <<locked>> | 98% | 56,057 psi | 88% | 3133 fps | 99.1% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 57,188 psi | 90% | 2858 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 90% | 54,955 psi | 86% | 3028 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 54,607 psi | 86% | 2910 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 30"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 41,336 psi | 65% | 2667 fps | 100% |
| Accurate MAGPRO | <<locked>> | 80% | 42,583 psi | 67% | 2808 fps | 98.3% |
| ADI AR 2209 | <<locked>> | 80% | 45,310 psi | 71% | 2799 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 80% | 40,524 psi | 64% | 2746 fps | 98.7% |
| ADI AR 2217 | <<locked>> | 80% | 30,284 psi | 47% | 2490 fps | 95.6% |
| ADI AR 2218 | <<locked>> | 94% | 41,640 psi | 65% | 2864 fps | 96.1% |
| ADI AR 2225 | <<locked>> | 80% | 27,688 psi | 43% | 2470 fps | 97.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 52,025 psi | 82% | 2894 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 45,266 psi | 71% | 2792 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 80% | 41,176 psi | 65% | 2753 fps | 99.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 40,001 psi | 63% | 2684 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 34,577 psi | 54% | 2635 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 80% | 44,918 psi | 70% | 2858 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 90% | 39,247 psi | 62% | 2795 fps | 95.7% |
| Alliant Reloder-50 | <<locked>> | 96% | 41,481 psi | 65% | 2848 fps | 95.9% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 39,697 psi | 62% | 2664 fps | 95.7% |
| Bofors RP15 | <<locked>> | 80% | 38,392 psi | 60% | 2690 fps | 99% |
| Bofors RP30 | <<locked>> | 80% | 32,082 psi | 50% | 2572 fps | 96.8% |
| Bofors RP5 | <<locked>> | 80% | 41,176 psi | 65% | 2753 fps | 99.5% |
| Hodgdon H1000 | <<locked>> | 80% | 32,822 psi | 51% | 2566 fps | 97.4% |
| Hodgdon H4831 | <<locked>> | 80% | 43,192 psi | 68% | 2743 fps | 98.6% |
| Hodgdon H4831 SC | <<locked>> | 80% | 42,366 psi | 66% | 2726 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 48,965 psi | 77% | 2762 fps | 100% |
| Hodgdon Retumbo | 108.9 gr | 80% | 33,765 psi | 53% | 2684 fps | 98.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,268 psi | 44% | 1644 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 50,981 psi | 80% | 2831 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 51,416 psi | 81% | 2831 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 44,382 psi | 70% | 2733 fps | 98.9% |
| IMR 7828 SSC | <<locked>> | 80% | 39,262 psi | 62% | 2730 fps | 98.5% |
| IMR 7977 Enduron | <<locked>> | 92% | 52,083 psi | 82% | 2838 fps | 95.4% |
| IMR 8133 Enduron | <<locked>> | 84% | 28,776 psi | 45% | 2503 fps | 95.1% |
| Lovex S070 | <<locked>> | 80% | 53,026 psi | 83% | 2858 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 35,665 psi | 56% | 2552 fps | 99.8% |
| Norma 204 | <<locked>> | 80% | 51,677 psi | 81% | 2887 fps | 100% |
| Norma 217 | <<locked>> | 80% | 25,237 psi | 40% | 2408 fps | 95.6% |
| Norma MRP | <<locked>> | 80% | 43,642 psi | 68% | 2825 fps | 100% |
| Norma URP | <<locked>> | 80% | 52,837 psi | 83% | 2871 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 39,131 psi | 61% | 2740 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 80% | 51,692 psi | 81% | 2884 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 35,114 psi | 55% | 2618 fps | 99.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,993 psi | 45% | 1683 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 52,910 psi | 83% | 2943 fps | 100% |
| ReloadSwiss RS 76 | 116.5 gr | 80% | 32,793 psi | 51% | 2657 fps | 99.4% |
| ReloadSwiss RS 80 | <<locked>> | 82% | 32,082 psi | 50% | 2608 fps | 95.2% |
| Rottweil R 904 | <<locked>> | 80% | 46,195 psi | 72% | 2769 fps | 99.4% |
| Rottweil R 905 | <<locked>> | 80% | 44,759 psi | 70% | 2782 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 80% | 53,026 psi | 83% | 2858 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 53,374 psi | 84% | 2808 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 44,411 psi | 70% | 2776 fps | 99.8% |
| Somchem S361 | <<locked>> | 80% | 47,036 psi | 74% | 2759 fps | 99.2% |
| Somchem S365 | <<locked>> | 80% | 50,502 psi | 79% | 2825 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 45,194 psi | 71% | 2756 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 39,479 psi | 62% | 2638 fps | 99.5% |
| Vihtavuori N170 | <<locked>> | 88% | 43,830 psi | 69% | 2753 fps | 95.1% |
| Vihtavuori N550 | <<locked>> | 80% | 53,461 psi | 84% | 2867 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 44,483 psi | 70% | 2759 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 43,424 psi | 68% | 2822 fps | 98.9% |
| Vihtavuori N565 | <<locked>> | 80% | 35,984 psi | 56% | 2644 fps | 97.3% |
| Vihtavuori N568 | <<locked>> | 82% | 33,460 psi | 52% | 2631 fps | 95.1% |
| Vihtavuori N570 | 124.3 gr | 88% | 39,276 psi | 62% | 2808 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 53,432 psi | 84% | 2808 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 37,594 psi | 59% | 2749 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 41,524 psi | 65% | 2687 fps | 99.5% |
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 70 powders for .375 EnABELR loaded with the .375 | 305gr | Hammer Claw Hammer . Vihtavuori N570 delivers the highest muzzle velocity at 3,133 fps; across all powders the maximum-charge window runs from 1,841 fps to 3,133 fps. Accurate 8700 gives the best case fill at 100 %, and 70 of the 70 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 59–90 %, 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. Accurate 8700, ADI AR 2218, ADI AR 2225 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. Hodgdon Retumbo, ReloadSwiss RS 76, Vihtavuori N570 rank at the top here: for .375 EnABELR 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, Hodgdon US 869, Ramshot LRT, Vihtavuori 24N41 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.