Load Specifications
Load data in caliber .300 H&H Mag. with .308 | 150gr | Impala LWH CHP bullet and 90 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-16, ReloadSwiss RS 70 and Alliant Reloder-17.
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 2495 | <<locked>> | 84% | 54,955 psi | 88% | 2933 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 55,361 psi | 89% | 2963 fps | 96.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 48,501 psi | 78% | 2933 fps | 97.2% |
| Accurate 4064 | <<locked>> | 86% | 54,853 psi | 88% | 2982 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 53,998 psi | 87% | 3058 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 82% | 53,359 psi | 86% | 2989 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 88% | 54,056 psi | 87% | 2989 fps | 99.6% |
| ADI Benchmark 8208 | <<locked>> | 82% | 55,259 psi | 89% | 2989 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 56,318 psi | 90% | 3169 fps | 99.8% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 54,636 psi | 88% | 3071 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 54,766 psi | 88% | 3022 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 55,085 psi | 88% | 3038 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 96% | 54,273 psi | 87% | 3107 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 92% | 55,448 psi | 89% | 3143 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 45,136 psi | 72% | 2949 fps | 99.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 50,981 psi | 82% | 3133 fps | 99% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 56,231 psi | 90% | 3058 fps | 99.6% |
| Bofors RP3 | <<locked>> | 88% | 55,883 psi | 90% | 3041 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 55,216 psi | 89% | 2999 fps | 97% |
| Hodgdon BL-C2 | <<locked>> | 82% | 55,317 psi | 89% | 3025 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 56,347 psi | 90% | 3048 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 94% | 55,985 psi | 90% | 3100 fps | 97.8% |
| Hodgdon H4350 | <<locked>> | 92% | 55,941 psi | 90% | 3051 fps | 96.5% |
| Hodgdon H4895 | <<locked>> | 82% | 53,867 psi | 86% | 3002 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 54,317 psi | 87% | 3031 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 53,461 psi | 86% | 3035 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 56,202 psi | 90% | 3130 fps | 97.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,303 psi | 58% | 1890 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 54,578 psi | 88% | 2999 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 54,230 psi | 87% | 2992 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 53,867 psi | 86% | 2976 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 84% | 53,243 psi | 85% | 2943 fps | 97.2% |
| IMR 4350 | <<locked>> | 96% | 55,463 psi | 89% | 3025 fps | 97.1% |
| IMR 4451 Enduron | <<locked>> | 90% | 53,417 psi | 86% | 2976 fps | 97.1% |
| IMR 4831 | <<locked>> | 96% | 54,288 psi | 87% | 3045 fps | 99.4% |
| IMR 4895 | <<locked>> | 84% | 53,156 psi | 85% | 3018 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 82% | 55,259 psi | 89% | 2989 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 53,838 psi | 86% | 2976 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 55,550 psi | 89% | 2963 fps | 99.9% |
| Lovex S062 | <<locked>> | 86% | 54,259 psi | 87% | 2979 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 53,548 psi | 86% | 2979 fps | 98.4% |
| Lovex S070 | <<locked>> | 94% | 54,563 psi | 87% | 3015 fps | 97.7% |
| Norma 201 | <<locked>> | 84% | 55,782 psi | 89% | 2992 fps | 100% |
| Norma 202 | <<locked>> | 84% | 56,217 psi | 90% | 2992 fps | 100% |
| Norma 203B | <<locked>> | 86% | 54,418 psi | 87% | 3025 fps | 99.9% |
| Norma 204 | <<locked>> | 96% | 56,202 psi | 90% | 3077 fps | 95.9% |
| Norma MRPᴾ | <<locked>> | 100% | 50,343 psi | 81% | 3077 fps | 96.5% |
| Norma URP | <<locked>> | 96% | 55,883 psi | 90% | 3091 fps | 99.5% |
| Ramshot Big Game | <<locked>> | 86% | 54,839 psi | 88% | 3048 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 96% | 54,723 psi | 88% | 3087 fps | 98.3% |
| Ramshot TAC | <<locked>> | 82% | 55,390 psi | 89% | 3005 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 82% | 55,463 psi | 89% | 3028 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,840 psi | 59% | 1932 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 56,101 psi | 90% | 3022 fps | 98.2% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 55,506 psi | 89% | 3104 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 54,998 psi | 88% | 3140 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 53,374 psi | 86% | 3071 fps | 99.2% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 55,898 psi | 90% | 3156 fps | 99.3% |
| Rottweil R 902 | <<locked>> | 84% | 53,301 psi | 85% | 2943 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 55,680 psi | 89% | 3031 fps | 100% |
| Rottweil R 907 | <<locked>> | 92% | 55,216 psi | 89% | 2999 fps | 97% |
| Shooters World Long Rifle | <<locked>> | 92% | 53,548 psi | 86% | 2979 fps | 98.4% |
| Shooters World Match Rifle | <<locked>> | 82% | 53,838 psi | 86% | 2976 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 54,259 psi | 87% | 2979 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 54,563 psi | 87% | 3015 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 53,171 psi | 85% | 3028 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 54,476 psi | 87% | 2989 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 54,868 psi | 88% | 3012 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 53,316 psi | 85% | 2877 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 53,766 psi | 86% | 2877 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 53,534 psi | 86% | 2923 fps | 97.2% |
| Somchem S335 | <<locked>> | 84% | 56,246 psi | 90% | 2923 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 53,867 psi | 86% | 2979 fps | 99.8% |
| Somchem S355 | <<locked>> | 90% | 55,912 psi | 90% | 3028 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 54,389 psi | 87% | 3100 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 53,940 psi | 86% | 3028 fps | 96.7% |
| Vihtavuori N133 | <<locked>> | 82% | 53,563 psi | 86% | 2861 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 56,072 psi | 90% | 2953 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 53,243 psi | 85% | 2920 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 53,476 psi | 86% | 2949 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 54,650 psi | 88% | 3028 fps | 99.3% |
| Vihtavuori N530 | <<locked>> | 82% | 55,709 psi | 89% | 2989 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 54,723 psi | 88% | 2963 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 54,085 psi | 87% | 3038 fps | 99.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 50,430 psi | 81% | 3041 fps | 99.4% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 54,592 psi | 88% | 3005 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 56,072 psi | 90% | 3041 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 55,985 psi | 90% | 3100 fps | 97.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,089 psi | 66% | 2979 fps | 99.7% |
| Winchester StaBALL Match | <<locked>> | 84% | 54,926 psi | 88% | 3018 fps | 100% |
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 2495 | <<locked>> | 80% | 48,747 psi | 78% | 2838 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 48,747 psi | 78% | 2844 fps | 95.3% |
| Accurate 3100 | <<locked>> | 96% | 42,656 psi | 68% | 2822 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 46,006 psi | 74% | 2835 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 36,724 psi | 59% | 2710 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 50,227 psi | 81% | 2936 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 80% | 42,844 psi | 69% | 2779 fps | 98% |
| ADI Benchmark 8208 | <<locked>> | 80% | 52,069 psi | 83% | 2936 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,151 psi | 74% | 2979 fps | 98.7% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 51,445 psi | 82% | 3015 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,134 psi | 69% | 2808 fps | 99.2% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,977 psi | 74% | 2874 fps | 98.7% |
| Alliant Reloder-16 | 56.1 gr | 82% | 35,810 psi | 57% | 2707 fps | 95.5% |
| Alliant Reloder-17 | 59 gr | 80% | 37,695 psi | 60% | 2785 fps | 98% |
| Alliant Reloder-23 | <<locked>> | 88% | 31,850 psi | 51% | 2621 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 92% | 39,044 psi | 63% | 2871 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,530 psi | 79% | 2940 fps | 98.9% |
| Bofors RP3 | <<locked>> | 80% | 43,468 psi | 70% | 2822 fps | 99.3% |
| Bofors RP7 | <<locked>> | 88% | 49,110 psi | 79% | 2890 fps | 95.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 51,895 psi | 83% | 2969 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,801 psi | 70% | 2818 fps | 97.3% |
| Hodgdon H414 | <<locked>> | 88% | 46,180 psi | 74% | 2920 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 88% | 49,647 psi | 80% | 2940 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 50,734 psi | 81% | 2949 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,488 psi | 50% | 2556 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,862 psi | 75% | 2920 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 90% | 49,008 psi | 79% | 3002 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,108 psi | 43% | 1690 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,298 psi | 77% | 2890 fps | 99.6% |
| IMR 3031 | <<locked>> | 80% | 50,865 psi | 82% | 2940 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,034 psi | 72% | 2815 fps | 98.6% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,297 psi | 76% | 2835 fps | 95.8% |
| IMR 4350 | <<locked>> | 90% | 46,354 psi | 74% | 2861 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 84% | 44,730 psi | 72% | 2808 fps | 95% |
| IMR 4831 | <<locked>> | 82% | 35,244 psi | 57% | 2661 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 47,094 psi | 76% | 2904 fps | 99.3% |
| IMR 8208 XBR | <<locked>> | 80% | 52,069 psi | 83% | 2936 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 50,386 psi | 81% | 2920 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,516 psi | 79% | 2861 fps | 99.5% |
| Lovex S062 | <<locked>> | 80% | 45,469 psi | 73% | 2825 fps | 99.7% |
| Lovex S065 | <<locked>> | 82% | 40,205 psi | 64% | 2713 fps | 95.3% |
| Lovex S070 | <<locked>> | 86% | 43,192 psi | 69% | 2799 fps | 95% |
| Norma 201 | <<locked>> | 80% | 49,734 psi | 80% | 2890 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 49,777 psi | 80% | 2890 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,426 psi | 73% | 2861 fps | 99% |
| Norma 204 | <<locked>> | 94% | 52,489 psi | 84% | 3012 fps | 95% |
| Norma MRP | <<locked>> | 98% | 47,355 psi | 76% | 3022 fps | 95.7% |
| Norma URP | <<locked>> | 82% | 36,318 psi | 58% | 2700 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 45,063 psi | 72% | 2874 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 88% | 42,453 psi | 68% | 2851 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 52,112 psi | 84% | 2949 fps | 98.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,996 psi | 83% | 2972 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,659 psi | 44% | 1732 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,903 psi | 70% | 2795 fps | 95.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,631 psi | 78% | 2986 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,885 psi | 64% | 2851 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 36,071 psi | 58% | 2720 fps | 95.1% |
| ReloadSwiss RS 70 | 64.4 gr | 86% | 40,379 psi | 65% | 2838 fps | 95.9% |
| Rottweil R 902 | <<locked>> | 80% | 47,427 psi | 76% | 2841 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 80% | 41,118 psi | 66% | 2762 fps | 98.8% |
| Rottweil R 907 | <<locked>> | 88% | 49,110 psi | 79% | 2890 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 82% | 40,205 psi | 64% | 2713 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 50,386 psi | 81% | 2920 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,469 psi | 73% | 2825 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 86% | 43,192 psi | 69% | 2799 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,365 psi | 66% | 2802 fps | 98.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,097 psi | 82% | 2930 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,501 psi | 78% | 2900 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,343 psi | 81% | 2828 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,482 psi | 68% | 2690 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 44,570 psi | 71% | 2759 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 50,227 psi | 81% | 2831 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,502 psi | 81% | 2920 fps | 99.6% |
| Somchem S355 | <<locked>> | 80% | 41,510 psi | 67% | 2766 fps | 98.7% |
| Somchem S365 | <<locked>> | 80% | 31,009 psi | 50% | 2602 fps | 97.1% |
| Somchem S385 | <<locked>> | 96% | 47,674 psi | 76% | 2917 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 80% | 50,647 psi | 81% | 2818 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,152 psi | 76% | 2818 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,195 psi | 76% | 2822 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,523 psi | 63% | 2694 fps | 99.3% |
| Vihtavuori N160 | <<locked>> | 80% | 35,418 psi | 57% | 2644 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 52,431 psi | 84% | 2936 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 45,629 psi | 73% | 2812 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 37,405 psi | 60% | 2703 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 88% | 34,737 psi | 56% | 2707 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,954 psi | 56% | 2615 fps | 97.3% |
| Winchester 748 | <<locked>> | 80% | 52,489 psi | 84% | 2986 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 46,383 psi | 74% | 2923 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 90% | 30,356 psi | 49% | 2648 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 48,472 psi | 78% | 2910 fps | 99.7% |
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 90 powders for .300 H&H Mag. loaded with the .308 | 150gr | Impala LWH CHP. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,169 fps; across all powders the maximum-charge window runs from 1,890 fps to 3,169 fps. Accurate 3100 gives the best case fill at 100 %, and 90 of the 90 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Power Pro Varmint, 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-16, ReloadSwiss RS 70, Alliant Reloder-17 rank at the top here: for .300 H&H Mag. with the .308 | 150gr | Impala LWH CHP 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.