Load Specifications
Load data in caliber .375 H&H Mag. with .375 | 220gr | Impala CFN bullet and 88 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 52, Alliant Power Pro 2000-MR and Hodgdon LEVERevolution.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 90% | 54,505 psi | 87% | 2776 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 54,070 psi | 87% | 2848 fps | 97.5% |
| Accurate 2230 | <<locked>> | 82% | 55,245 psi | 89% | 2861 fps | 98% |
| Accurate 2460 | <<locked>> | 86% | 52,982 psi | 85% | 2792 fps | 99.9% |
| Accurate 2495 | <<locked>> | 96% | 55,535 psi | 89% | 2841 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 53,969 psi | 87% | 2844 fps | 99.9% |
| Accurate 4064 | <<locked>> | 98% | 54,824 psi | 88% | 2871 fps | 100% |
| Accurate LT-30 | <<locked>> | 84% | 54,201 psi | 87% | 2720 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 54,578 psi | 88% | 2740 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 94% | 56,101 psi | 90% | 2890 fps | 98.6% |
| ADI AR 2207 | <<locked>> | 82% | 55,709 psi | 89% | 2746 fps | 100% |
| ADI AR 2208 | <<locked>> | 98% | 53,548 psi | 86% | 2828 fps | 97.5% |
| ADI AR 2219 | <<locked>> | 84% | 54,331 psi | 87% | 2838 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 92% | 55,477 psi | 89% | 2848 fps | 99.3% |
| Alliant AR-Comp | <<locked>> | 92% | 54,781 psi | 88% | 2848 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 53,534 psi | 86% | 2904 fps | 98.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 96% | 55,361 psi | 89% | 2982 fps | 97.6% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 55,811 psi | 89% | 2900 fps | 99.2% |
| Alliant Reloder-10x | <<locked>> | 86% | 54,259 psi | 87% | 2785 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 53,780 psi | 86% | 2874 fps | 97.8% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 49,821 psi | 80% | 2890 fps | 98% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 56,289 psi | 90% | 2759 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 94% | 55,535 psi | 89% | 2897 fps | 97.5% |
| Bofors RP3 | <<locked>> | 98% | 53,214 psi | 85% | 2871 fps | 98.9% |
| Hodgdon Benchmark | <<locked>> | 90% | 54,737 psi | 88% | 2795 fps | 99.5% |
| Hodgdon BL-C2 | <<locked>> | 92% | 54,360 psi | 87% | 2881 fps | 99.5% |
| Hodgdon CFE223 | <<locked>> | 90% | 55,477 psi | 89% | 2963 fps | 98.1% |
| Hodgdon H322 | <<locked>> | 88% | 56,173 psi | 90% | 2864 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 53,795 psi | 86% | 2835 fps | 100% |
| Hodgdon H380 | <<locked>> | 98% | 54,766 psi | 88% | 2871 fps | 96.6% |
| Hodgdon H4198 | <<locked>> | 82% | 55,985 psi | 90% | 2766 fps | 100% |
| Hodgdon H4895 | <<locked>> | 92% | 53,287 psi | 85% | 2851 fps | 98.6% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 54,737 psi | 88% | 2927 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,679 psi | 56% | 1716 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 54,491 psi | 87% | 2854 fps | 98.7% |
| IMR 3031 | <<locked>> | 94% | 55,434 psi | 89% | 2904 fps | 100% |
| IMR 4064 | <<locked>> | 98% | 56,405 psi | 90% | 2864 fps | 98.2% |
| IMR 4198 | <<locked>> | 86% | 54,244 psi | 87% | 2743 fps | 100% |
| IMR 4895 | <<locked>> | 96% | 55,013 psi | 88% | 2907 fps | 98.5% |
| IMR 8208 XBR | <<locked>> | 92% | 55,477 psi | 89% | 2848 fps | 99.3% |
| Lovex D073.4 | <<locked>> | 82% | 56,101 psi | 90% | 2848 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 88% | 56,318 psi | 90% | 2848 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 94% | 55,317 psi | 89% | 2877 fps | 99.9% |
| Lovex S060 | <<locked>> | 92% | 53,330 psi | 86% | 2772 fps | 98.2% |
| Lovex S062 | <<locked>> | 98% | 55,912 psi | 90% | 2867 fps | 99.4% |
| Norma 200 | <<locked>> | 82% | 54,853 psi | 88% | 2762 fps | 100% |
| Norma 201 | <<locked>> | 94% | 55,448 psi | 89% | 2844 fps | 99.3% |
| Norma 202 | <<locked>> | 94% | 55,303 psi | 89% | 2854 fps | 100% |
| Norma 203B | <<locked>> | 98% | 56,130 psi | 90% | 2913 fps | 98.6% |
| Ramshot Big Game | <<locked>> | 98% | 56,246 psi | 90% | 2930 fps | 98.5% |
| Ramshot TAC | <<locked>> | 92% | 56,391 psi | 90% | 2858 fps | 96.2% |
| Ramshot Wild Boar | <<locked>> | 92% | 55,071 psi | 88% | 2877 fps | 98.4% |
| Ramshot X-Terminator | <<locked>> | 88% | 53,896 psi | 86% | 2802 fps | 98.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,041 psi | 56% | 1759 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 55,463 psi | 89% | 2844 fps | 99.9% |
| ReloadSwiss RS 52 | <<locked>> | 96% | 56,333 psi | 90% | 2982 fps | 98.2% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 53,040 psi | 85% | 2963 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 90% | 53,983 psi | 87% | 2799 fps | 100% |
| Rottweil R 902 | <<locked>> | 96% | 55,840 psi | 90% | 2841 fps | 99.3% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 52,591 psi | 84% | 2851 fps | 98.6% |
| Shooters World AR Plus | <<locked>> | 82% | 56,101 psi | 90% | 2848 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 94% | 55,317 psi | 89% | 2877 fps | 99.9% |
| Shooters World Precision | <<locked>> | 98% | 55,912 psi | 90% | 2867 fps | 99.4% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 55,593 psi | 89% | 2808 fps | 99.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 55,230 psi | 89% | 2490 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 54,694 psi | 88% | 2844 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 54,099 psi | 87% | 2907 fps | 98.2% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 54,766 psi | 88% | 2799 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 54,404 psi | 87% | 2831 fps | 96.4% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 54,534 psi | 87% | 2861 fps | 98.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 54,317 psi | 87% | 2753 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 53,113 psi | 85% | 2743 fps | 100% |
| Somchem S321 | <<locked>> | 88% | 53,664 psi | 86% | 2841 fps | 99.3% |
| Somchem S335 | <<locked>> | 94% | 56,434 psi | 90% | 2799 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 53,345 psi | 86% | 2825 fps | 98% |
| Somchem S355ᴾ | <<locked>> | 100% | 53,417 psi | 86% | 2851 fps | 98.6% |
| Somchem S365ᴾ | <<locked>> | 100% | 39,015 psi | 63% | 2677 fps | 96.7% |
| Vihtavuori N120 | <<locked>> | 82% | 55,535 psi | 89% | 2694 fps | 100% |
| Vihtavuori N130 | <<locked>> | 88% | 54,172 psi | 87% | 2733 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 53,882 psi | 86% | 2743 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 54,041 psi | 87% | 2818 fps | 100% |
| Vihtavuori N140 | <<locked>> | 96% | 55,680 psi | 89% | 2831 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 51,488 psi | 83% | 2789 fps | 99.2% |
| Vihtavuori N530 | <<locked>> | 92% | 56,304 psi | 90% | 2854 fps | 99.4% |
| Vihtavuori N540 | <<locked>> | 96% | 53,766 psi | 86% | 2825 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 47,036 psi | 75% | 2720 fps | 97.3% |
| Winchester 748 | <<locked>> | 92% | 54,911 psi | 88% | 2897 fps | 99.7% |
| Winchester StaBALL Match | <<locked>> | 94% | 53,882 psi | 86% | 2867 fps | 98.7% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 40,799 psi | 65% | 2552 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 50,836 psi | 82% | 2792 fps | 96.9% |
| Accurate 2230 | <<locked>> | 80% | 51,793 psi | 83% | 2805 fps | 97.4% |
| Accurate 2460 | <<locked>> | 80% | 44,034 psi | 71% | 2644 fps | 99.2% |
| Accurate 2495 | <<locked>> | 80% | 34,287 psi | 55% | 2474 fps | 99.6% |
| Accurate 2520 | <<locked>> | 80% | 39,175 psi | 63% | 2589 fps | 98.1% |
| Accurate 4064 | <<locked>> | 80% | 32,401 psi | 52% | 2448 fps | 97.4% |
| Accurate LT-30 | <<locked>> | 80% | 48,124 psi | 77% | 2628 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 48,428 psi | 78% | 2641 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 82% | 39,479 psi | 63% | 2585 fps | 95% |
| ADI AR 2207 | <<locked>> | 80% | 52,634 psi | 84% | 2703 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 42,482 psi | 68% | 2628 fps | 95% |
| ADI AR 2219 | <<locked>> | 80% | 47,601 psi | 76% | 2733 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 38,986 psi | 63% | 2552 fps | 96.3% |
| Alliant AR-Comp | <<locked>> | 80% | 37,521 psi | 60% | 2572 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 44,483 psi | 71% | 2740 fps | 97.1% |
| Alliant Power Pro 2000-MR | 72.4 gr | 90% | 45,788 psi | 73% | 2805 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 36,825 psi | 59% | 2552 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 45,730 psi | 73% | 2654 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 42,279 psi | 68% | 2664 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 94% | 41,278 psi | 66% | 2717 fps | 95.6% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 47,007 psi | 75% | 2621 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 46,006 psi | 74% | 2733 fps | 95.5% |
| Bofors RP3 | <<locked>> | 86% | 36,521 psi | 59% | 2556 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 41,147 psi | 66% | 2556 fps | 97.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 36,956 psi | 59% | 2559 fps | 96.4% |
| Hodgdon CFE223 | <<locked>> | 82% | 42,873 psi | 69% | 2733 fps | 95.3% |
| Hodgdon H322 | <<locked>> | 80% | 43,859 psi | 70% | 2664 fps | 99.8% |
| Hodgdon H335 | <<locked>> | 80% | 44,498 psi | 71% | 2680 fps | 99.4% |
| Hodgdon H380 | <<locked>> | 94% | 48,399 psi | 78% | 2766 fps | 95.2% |
| Hodgdon H4198 | <<locked>> | 80% | 52,678 psi | 84% | 2717 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 37,463 psi | 60% | 2546 fps | 95% |
| Hodgdon LEVERevolution | 66.2 gr | 84% | 37,739 psi | 61% | 2605 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,889 psi | 42% | 1532 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 38,130 psi | 61% | 2549 fps | 95.1% |
| IMR 3031 | <<locked>> | 80% | 35,897 psi | 58% | 2559 fps | 99.3% |
| IMR 4064 | <<locked>> | 88% | 42,177 psi | 68% | 2615 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 45,759 psi | 73% | 2615 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 40,683 psi | 65% | 2648 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 38,986 psi | 63% | 2552 fps | 96.3% |
| Lovex D073.4 | <<locked>> | 80% | 52,591 psi | 84% | 2795 fps | 99.7% |
| Lovex D073.5 | <<locked>> | 80% | 43,801 psi | 70% | 2641 fps | 98.4% |
| Lovex D073.6 | <<locked>> | 80% | 35,563 psi | 57% | 2520 fps | 97.2% |
| Lovex S060 | <<locked>> | 82% | 40,248 psi | 65% | 2530 fps | 95.2% |
| Lovex S062 | <<locked>> | 82% | 35,273 psi | 57% | 2480 fps | 95.2% |
| Norma 200 | <<locked>> | 80% | 51,909 psi | 83% | 2723 fps | 100% |
| Norma 201 | <<locked>> | 80% | 37,043 psi | 59% | 2503 fps | 95.8% |
| Norma 202 | <<locked>> | 80% | 36,492 psi | 59% | 2516 fps | 98.1% |
| Norma 203B | <<locked>> | 88% | 41,582 psi | 67% | 2657 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 88% | 41,075 psi | 66% | 2657 fps | 95.1% |
| Ramshot TAC | <<locked>> | 90% | 52,823 psi | 85% | 2799 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 82% | 40,118 psi | 64% | 2608 fps | 95.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 42,119 psi | 68% | 2592 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,150 psi | 42% | 1572 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 43,511 psi | 70% | 2644 fps | 98.7% |
| ReloadSwiss RS 52 | 68.6 gr | 88% | 43,656 psi | 70% | 2759 fps | 95.5% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 34,476 psi | 55% | 2562 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 41,089 psi | 66% | 2569 fps | 98.8% |
| Rottweil R 902 | <<locked>> | 80% | 35,360 psi | 57% | 2457 fps | 95.2% |
| Rottweil R 903 | <<locked>> | 90% | 38,943 psi | 62% | 2602 fps | 95.7% |
| Shooters World AR Plus | <<locked>> | 80% | 52,591 psi | 84% | 2795 fps | 99.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 35,563 psi | 57% | 2520 fps | 97.2% |
| Shooters World Precision | <<locked>> | 82% | 35,273 psi | 57% | 2480 fps | 95.2% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 45,847 psi | 74% | 2651 fps | 97.6% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 52,402 psi | 84% | 2454 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 48,298 psi | 77% | 2740 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 42,482 psi | 68% | 2697 fps | 95.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 45,847 psi | 74% | 2661 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 51,039 psi | 82% | 2776 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 40,277 psi | 65% | 2602 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 38,247 psi | 61% | 2474 fps | 98.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,459 psi | 50% | 2339 fps | 97.6% |
| Somchem S321 | <<locked>> | 80% | 41,611 psi | 67% | 2628 fps | 97.3% |
| Somchem S335 | <<locked>> | 80% | 37,971 psi | 61% | 2484 fps | 99% |
| Somchem S341 | <<locked>> | 84% | 41,278 psi | 66% | 2612 fps | 95.3% |
| Somchem S355 | <<locked>> | 88% | 37,695 psi | 60% | 2559 fps | 95% |
| Somchem S365 | <<locked>> | 96% | 34,795 psi | 56% | 2572 fps | 95% |
| Vihtavuori N120 | <<locked>> | 80% | 52,475 psi | 84% | 2654 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 43,091 psi | 69% | 2559 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 38,101 psi | 61% | 2480 fps | 99.8% |
| Vihtavuori N135 | <<locked>> | 80% | 33,649 psi | 54% | 2457 fps | 99.5% |
| Vihtavuori N140 | <<locked>> | 80% | 34,418 psi | 55% | 2451 fps | 97.9% |
| Vihtavuori N150 | <<locked>> | 86% | 33,750 psi | 54% | 2448 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 38,798 psi | 62% | 2543 fps | 96.4% |
| Vihtavuori N540 | <<locked>> | 80% | 33,286 psi | 53% | 2438 fps | 97% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 41,684 psi | 67% | 2615 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 37,521 psi | 60% | 2579 fps | 96.9% |
| Winchester StaBALL Match | <<locked>> | 84% | 39,247 psi | 63% | 2602 fps | 95.6% |
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 88 powders for .375 H&H Mag. loaded with the .375 | 220gr | Impala CFN. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,982 fps; across all powders the maximum-charge window runs from 1,716 fps to 2,982 fps. Alliant Reloder- TS 15.5 gives the best case fill at 100 %, and 88 of the 88 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 220.0 gr projectile in 0.375" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder- TS 15.5, Alliant Reloder-17, Hodgdon TrailBoss 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. ReloadSwiss RS 52, Alliant Power Pro 2000-MR, Hodgdon LEVERevolution rank at the top here: for .375 H&H Mag. with the .375 | 220gr | Impala CFN 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.