Load Specifications
Load data in caliber .300 H&H Mag. with .308 | 150gr | Barnes TSX FN FB bullet and 93 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon Superformance 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 2015 | <<locked>> | 82% | 54,520 psi | 87% | 2930 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 53,229 psi | 85% | 2946 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 55,158 psi | 88% | 3018 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 56,231 psi | 90% | 3009 fps | 97.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 44,425 psi | 71% | 2887 fps | 96.5% |
| Accurate 4064 | <<locked>> | 88% | 53,505 psi | 86% | 2999 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 53,983 psi | 87% | 3087 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 84% | 53,824 psi | 86% | 3031 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 90% | 54,984 psi | 88% | 3035 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 84% | 56,202 psi | 90% | 3035 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 53,751 psi | 86% | 2956 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 53,795 psi | 86% | 3153 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 55,274 psi | 89% | 3058 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 55,724 psi | 89% | 3081 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 98% | 55,274 psi | 89% | 3153 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 92% | 52,924 psi | 85% | 3127 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 42,119 psi | 68% | 2920 fps | 99.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 47,790 psi | 77% | 3100 fps | 98.7% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 53,722 psi | 86% | 3045 fps | 99.5% |
| Bofors RP3 | <<locked>> | 90% | 55,999 psi | 90% | 3074 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 55,854 psi | 90% | 3041 fps | 97.3% |
| Hodgdon Benchmark | <<locked>> | 82% | 54,186 psi | 87% | 2963 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 55,999 psi | 90% | 3064 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 53,142 psi | 85% | 3028 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 94% | 53,185 psi | 85% | 3081 fps | 97.5% |
| Hodgdon H4350 | <<locked>> | 92% | 53,635 psi | 86% | 3045 fps | 96.2% |
| Hodgdon H4895 | <<locked>> | 84% | 54,375 psi | 87% | 3041 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 55,114 psi | 88% | 3071 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 54,172 psi | 87% | 3074 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 53,824 psi | 86% | 3117 fps | 97.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,534 psi | 57% | 1900 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 55,608 psi | 89% | 3045 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 54,476 psi | 87% | 3025 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 54,433 psi | 87% | 3015 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 86% | 54,288 psi | 87% | 2992 fps | 97.6% |
| IMR 4350 | <<locked>> | 96% | 52,968 psi | 85% | 3012 fps | 96.8% |
| IMR 4451 Enduron | <<locked>> | 92% | 54,302 psi | 87% | 3018 fps | 97.5% |
| IMR 4831 | <<locked>> | 98% | 54,679 psi | 88% | 3081 fps | 99.6% |
| IMR 4895 | <<locked>> | 86% | 53,447 psi | 86% | 3051 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 84% | 56,202 psi | 90% | 3035 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 53,766 psi | 86% | 3005 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 53,113 psi | 85% | 2956 fps | 99.9% |
| Lovex S062 | <<locked>> | 88% | 54,375 psi | 87% | 3015 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 53,838 psi | 86% | 3015 fps | 98.6% |
| Lovex S070 | <<locked>> | 96% | 54,708 psi | 88% | 3048 fps | 97.9% |
| Norma 201 | <<locked>> | 86% | 55,898 psi | 90% | 3028 fps | 100% |
| Norma 202 | <<locked>> | 84% | 53,098 psi | 85% | 2976 fps | 100% |
| Norma 203B | <<locked>> | 88% | 54,911 psi | 88% | 3064 fps | 99.9% |
| Norma MRPᴾ | <<locked>> | 100% | 47,572 psi | 76% | 3054 fps | 96.1% |
| Norma URP | <<locked>> | 96% | 52,997 psi | 85% | 3071 fps | 99.3% |
| Ramshot Big Game | <<locked>> | 88% | 55,869 psi | 90% | 3094 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 98% | 55,753 psi | 89% | 3130 fps | 98.7% |
| Ramshot TAC | <<locked>> | 82% | 52,939 psi | 85% | 2992 fps | 98.6% |
| Ramshot Wild Boar | <<locked>> | 82% | 52,649 psi | 84% | 3012 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,071 psi | 58% | 1946 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 53,461 psi | 86% | 3012 fps | 98% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 52,707 psi | 85% | 3091 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 52,402 psi | 84% | 3127 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 53,882 psi | 86% | 3110 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 53,171 psi | 85% | 3133 fps | 99.2% |
| Rottweil R 901 | <<locked>> | 82% | 53,214 psi | 85% | 2956 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 56,405 psi | 90% | 3025 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 55,854 psi | 90% | 3064 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 55,854 psi | 90% | 3041 fps | 97.3% |
| Shooters World Long Rifle | <<locked>> | 94% | 53,838 psi | 86% | 3015 fps | 98.6% |
| Shooters World Match Rifle | <<locked>> | 84% | 53,766 psi | 86% | 3005 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 54,375 psi | 87% | 3015 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 54,708 psi | 88% | 3048 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 54,201 psi | 87% | 3074 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 54,969 psi | 88% | 3028 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 55,927 psi | 90% | 3058 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 53,838 psi | 86% | 2917 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 54,389 psi | 87% | 2913 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 53,896 psi | 86% | 2963 fps | 97.5% |
| Somchem S335 | <<locked>> | 84% | 53,330 psi | 86% | 2910 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 54,737 psi | 88% | 3018 fps | 99.9% |
| Somchem S355 | <<locked>> | 92% | 55,869 psi | 90% | 3061 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 55,143 psi | 88% | 3133 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 50,879 psi | 82% | 3005 fps | 96.4% |
| Vihtavuori N133 | <<locked>> | 84% | 54,259 psi | 87% | 2904 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 56,376 psi | 90% | 2989 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 53,838 psi | 86% | 2956 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 54,056 psi | 87% | 2989 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 55,579 psi | 89% | 3074 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 82% | 53,127 psi | 85% | 2979 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 55,492 psi | 89% | 3002 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 54,549 psi | 87% | 3074 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 46,818 psi | 75% | 3002 fps | 99.1% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 55,854 psi | 90% | 3048 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 53,272 psi | 85% | 3028 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 53,447 psi | 86% | 3084 fps | 97.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,840 psi | 61% | 2927 fps | 99.2% |
| Winchester StaBALL Match | <<locked>> | 86% | 55,825 psi | 90% | 3061 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 2015 | <<locked>> | 80% | 51,126 psi | 82% | 2877 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 43,395 psi | 70% | 2789 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 51,503 psi | 83% | 2963 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 48,965 psi | 79% | 2884 fps | 95.6% |
| Accurate 3100 | <<locked>> | 98% | 41,263 psi | 66% | 2822 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 41,089 psi | 66% | 2782 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 35,143 psi | 56% | 2710 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 47,297 psi | 76% | 2913 fps | 99.4% |
| ADI AR 2208 | <<locked>> | 80% | 40,147 psi | 64% | 2749 fps | 97.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,472 psi | 79% | 2923 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 80% | 50,270 psi | 81% | 2907 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,497 psi | 70% | 2953 fps | 98.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,045 psi | 64% | 2776 fps | 98.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,902 psi | 69% | 2844 fps | 98.3% |
| Alliant Reloder-16 | <<locked>> | 84% | 35,143 psi | 56% | 2726 fps | 95.5% |
| Alliant Reloder-17 | 60.8 gr | 80% | 34,563 psi | 55% | 2733 fps | 97.1% |
| Alliant Reloder-23 | <<locked>> | 90% | 30,472 psi | 49% | 2615 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 94% | 38,392 psi | 62% | 2887 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 46,818 psi | 75% | 2920 fps | 98.6% |
| Bofors RP3 | <<locked>> | 80% | 39,610 psi | 64% | 2776 fps | 98.8% |
| Bofors RP7 | <<locked>> | 88% | 46,035 psi | 74% | 2864 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 50,981 psi | 82% | 2910 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 48,718 psi | 78% | 2946 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 40,538 psi | 65% | 2782 fps | 96.6% |
| Hodgdon H414 | <<locked>> | 88% | 43,453 psi | 70% | 2894 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 90% | 50,372 psi | 81% | 2986 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 47,776 psi | 77% | 2927 fps | 99.7% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 30,211 psi | 48% | 2556 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 44,092 psi | 71% | 2897 fps | 99.5% |
| Hodgdon Superformance | 72.3 gr | 90% | 46,238 psi | 74% | 2972 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,368 psi | 42% | 1696 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,803 psi | 73% | 2874 fps | 99.5% |
| IMR 3031 | <<locked>> | 80% | 47,674 psi | 76% | 2917 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,177 psi | 68% | 2789 fps | 98.3% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,715 psi | 72% | 2815 fps | 95.4% |
| IMR 4350 | <<locked>> | 92% | 46,557 psi | 75% | 2897 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 86% | 44,976 psi | 72% | 2844 fps | 95.3% |
| IMR 4831 | <<locked>> | 84% | 34,069 psi | 55% | 2664 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 43,976 psi | 71% | 2877 fps | 99% |
| IMR 8208 XBR | <<locked>> | 80% | 49,472 psi | 79% | 2923 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 46,804 psi | 75% | 2890 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 46,949 psi | 75% | 2848 fps | 99.4% |
| Lovex S062 | <<locked>> | 80% | 42,047 psi | 67% | 2792 fps | 99.4% |
| Lovex S065 | <<locked>> | 84% | 39,247 psi | 63% | 2726 fps | 95.2% |
| Lovex S070 | <<locked>> | 88% | 42,366 psi | 68% | 2815 fps | 95% |
| Norma 201 | <<locked>> | 80% | 46,035 psi | 74% | 2861 fps | 99.8% |
| Norma 202 | <<locked>> | 80% | 46,760 psi | 75% | 2871 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,250 psi | 68% | 2831 fps | 98.6% |
| Norma MRP | <<locked>> | 98% | 44,193 psi | 71% | 2982 fps | 95% |
| Norma URP | <<locked>> | 84% | 35,404 psi | 57% | 2710 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 42,177 psi | 68% | 2844 fps | 98.5% |
| Ramshot Hunter | <<locked>> | 90% | 42,438 psi | 68% | 2881 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 49,385 psi | 79% | 2930 fps | 98% |
| Ramshot Wild Boar | <<locked>> | 80% | 49,284 psi | 79% | 2953 fps | 99.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,760 psi | 43% | 1739 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 43,642 psi | 70% | 2825 fps | 95.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 45,774 psi | 73% | 2963 fps | 98.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 36,825 psi | 59% | 2812 fps | 99.6% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 37,623 psi | 60% | 2789 fps | 95.9% |
| ReloadSwiss RS 70 | 66.4 gr | 86% | 37,405 psi | 60% | 2795 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 49,980 psi | 80% | 2904 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 43,830 psi | 70% | 2808 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 80% | 37,289 psi | 60% | 2717 fps | 98.1% |
| Rottweil R 907 | <<locked>> | 88% | 46,035 psi | 74% | 2864 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 84% | 39,247 psi | 63% | 2726 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 46,804 psi | 75% | 2890 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,047 psi | 67% | 2792 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 88% | 42,366 psi | 68% | 2815 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,522 psi | 62% | 2769 fps | 97.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,790 psi | 77% | 2904 fps | 98.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,876 psi | 74% | 2881 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,340 psi | 76% | 2812 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,523 psi | 63% | 2664 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 44,063 psi | 71% | 2785 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 46,963 psi | 75% | 2808 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 47,645 psi | 76% | 2900 fps | 99.4% |
| Somchem S355 | <<locked>> | 80% | 37,971 psi | 61% | 2720 fps | 98.1% |
| Somchem S365 | <<locked>> | 80% | 27,630 psi | 44% | 2530 fps | 95.5% |
| Somchem S385 | <<locked>> | 98% | 47,471 psi | 76% | 2943 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 80% | 47,805 psi | 77% | 2805 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,555 psi | 70% | 2789 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,295 psi | 71% | 2802 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,274 psi | 58% | 2657 fps | 98.8% |
| Vihtavuori N160 | <<locked>> | 84% | 37,072 psi | 59% | 2720 fps | 95.9% |
| Vihtavuori N530 | <<locked>> | 80% | 49,588 psi | 80% | 2920 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 42,728 psi | 69% | 2785 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 36,434 psi | 58% | 2713 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 90% | 33,228 psi | 53% | 2700 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,053 psi | 51% | 2572 fps | 96.4% |
| Winchester 748 | <<locked>> | 80% | 49,748 psi | 80% | 2969 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 43,453 psi | 70% | 2894 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 94% | 30,821 psi | 49% | 2703 fps | 95.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,614 psi | 73% | 2887 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 93 powders for .300 H&H Mag. loaded with the .308 | 150gr | Barnes TSX FN FB. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,153 fps; across all powders the maximum-charge window runs from 1,900 fps to 3,153 fps. Accurate 3100 gives the best case fill at 100 %, and 93 of the 93 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:15.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, Alliant Reloder-26 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 70, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .300 H&H Mag. with the .308 | 150gr | Barnes TSX FN FB 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.