Load Specifications
Load data in caliber .300 H&H Mag. with .308 | 152gr | Lehigh Defense Controlled Chaos 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 ReloadSwiss RS 60.
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% | 54,201 psi | 87% | 2887 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 53,127 psi | 85% | 2910 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 54,534 psi | 87% | 2976 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 55,608 psi | 89% | 2959 fps | 96.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 43,801 psi | 70% | 2844 fps | 96.1% |
| Accurate 4064 | <<locked>> | 88% | 53,388 psi | 86% | 2963 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 53,316 psi | 85% | 3041 fps | 99.3% |
| ADI AR 2206H | <<locked>> | 84% | 53,214 psi | 85% | 2986 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 90% | 54,491 psi | 87% | 2989 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 84% | 55,564 psi | 89% | 2989 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 53,258 psi | 85% | 2917 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 52,939 psi | 85% | 3104 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 54,650 psi | 88% | 3015 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 55,027 psi | 88% | 3031 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 98% | 54,331 psi | 87% | 3100 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 94% | 55,724 psi | 89% | 3140 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,597 psi | 67% | 2874 fps | 98.9% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 47,065 psi | 75% | 3054 fps | 98.4% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 53,156 psi | 85% | 2999 fps | 99.4% |
| Bofors RP3 | <<locked>> | 90% | 55,347 psi | 89% | 3028 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 55,274 psi | 89% | 2995 fps | 97.1% |
| Hodgdon Benchmark | <<locked>> | 82% | 53,882 psi | 86% | 2920 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 55,201 psi | 89% | 3018 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 56,246 psi | 90% | 3041 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 96% | 55,941 psi | 90% | 3094 fps | 97.9% |
| Hodgdon H4350 | <<locked>> | 94% | 56,420 psi | 90% | 3054 fps | 96.6% |
| Hodgdon H4895 | <<locked>> | 84% | 53,809 psi | 86% | 2995 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 54,244 psi | 87% | 3025 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 53,519 psi | 86% | 3031 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 52,794 psi | 85% | 3068 fps | 96.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,665 psi | 57% | 1870 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 54,969 psi | 88% | 2999 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 54,027 psi | 87% | 2986 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 53,809 psi | 86% | 2972 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 86% | 53,650 psi | 86% | 2946 fps | 97.3% |
| IMR 4350 | <<locked>> | 98% | 55,622 psi | 89% | 3022 fps | 97.2% |
| IMR 4451 Enduron | <<locked>> | 92% | 53,577 psi | 86% | 2972 fps | 97.2% |
| IMR 4831 | <<locked>> | 98% | 53,737 psi | 86% | 3031 fps | 99.4% |
| IMR 4895 | <<locked>> | 86% | 52,939 psi | 85% | 3009 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 84% | 55,564 psi | 89% | 2989 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 53,156 psi | 85% | 2963 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 56,014 psi | 90% | 2966 fps | 99.9% |
| Lovex S062 | <<locked>> | 88% | 53,911 psi | 86% | 2972 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 53,272 psi | 85% | 2969 fps | 98.4% |
| Lovex S070 | <<locked>> | 96% | 54,070 psi | 87% | 3002 fps | 97.7% |
| Norma 201 | <<locked>> | 86% | 55,405 psi | 89% | 2986 fps | 100% |
| Norma 202 | <<locked>> | 86% | 55,927 psi | 90% | 2986 fps | 100% |
| Norma 203B | <<locked>> | 88% | 54,273 psi | 87% | 3018 fps | 99.9% |
| Norma URP | <<locked>> | 98% | 55,724 psi | 89% | 3081 fps | 99.5% |
| Ramshot Big Game | <<locked>> | 88% | 54,897 psi | 88% | 3045 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 98% | 54,694 psi | 88% | 3081 fps | 98.4% |
| Ramshot TAC | <<locked>> | 84% | 55,927 psi | 90% | 3009 fps | 98.9% |
| Ramshot Wild Boar | <<locked>> | 84% | 55,637 psi | 89% | 3025 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,289 psi | 58% | 1916 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 56,304 psi | 90% | 3022 fps | 98.3% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 55,753 psi | 89% | 3104 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 55,245 psi | 89% | 3136 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 53,069 psi | 85% | 3064 fps | 99.2% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 56,101 psi | 90% | 3153 fps | 99.4% |
| Rottweil R 901 | <<locked>> | 84% | 56,318 psi | 90% | 2966 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 55,956 psi | 90% | 2982 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 55,172 psi | 88% | 3022 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 55,274 psi | 89% | 2995 fps | 97.1% |
| Shooters World Long Rifle | <<locked>> | 94% | 53,272 psi | 85% | 2969 fps | 98.4% |
| Shooters World Match Rifle | <<locked>> | 84% | 53,156 psi | 85% | 2963 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 53,911 psi | 86% | 2972 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 54,070 psi | 87% | 3002 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 53,214 psi | 85% | 3025 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 54,520 psi | 87% | 2986 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 55,288 psi | 89% | 3012 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 53,505 psi | 86% | 2874 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 53,809 psi | 86% | 2871 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 53,243 psi | 85% | 2917 fps | 97.2% |
| Somchem S335 | <<locked>> | 86% | 56,217 psi | 90% | 2917 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 54,157 psi | 87% | 2976 fps | 99.8% |
| Somchem S355 | <<locked>> | 92% | 55,376 psi | 89% | 3015 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 54,070 psi | 87% | 3087 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 50,053 psi | 80% | 2956 fps | 96% |
| Vihtavuori N130 | <<locked>> | 82% | 56,260 psi | 90% | 2881 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 53,824 psi | 86% | 2861 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 55,927 psi | 90% | 2949 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 53,287 psi | 85% | 2917 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 53,388 psi | 86% | 2943 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 54,795 psi | 88% | 3028 fps | 99.4% |
| Vihtavuori N530 | <<locked>> | 84% | 56,231 psi | 90% | 2992 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 54,752 psi | 88% | 2956 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 53,737 psi | 86% | 3028 fps | 99.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 46,064 psi | 74% | 2959 fps | 98.9% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 54,752 psi | 88% | 2999 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 56,434 psi | 90% | 3041 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 56,202 psi | 90% | 3097 fps | 97.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,333 psi | 60% | 2881 fps | 98.9% |
| Winchester StaBALL Match | <<locked>> | 86% | 55,274 psi | 89% | 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 2015 | <<locked>> | 80% | 50,778 psi | 81% | 2838 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 43,613 psi | 70% | 2759 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 51,068 psi | 82% | 2920 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 48,733 psi | 78% | 2841 fps | 95.4% |
| Accurate 3100 | <<locked>> | 98% | 41,017 psi | 66% | 2789 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 41,263 psi | 66% | 2753 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 35,012 psi | 56% | 2674 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 47,050 psi | 75% | 2874 fps | 99.3% |
| ADI AR 2208 | <<locked>> | 80% | 39,856 psi | 64% | 2710 fps | 97.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,139 psi | 79% | 2884 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 80% | 49,661 psi | 80% | 2864 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,004 psi | 69% | 2907 fps | 98.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,668 psi | 64% | 2736 fps | 98.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,714 psi | 68% | 2805 fps | 98.2% |
| Alliant Reloder-16 | <<locked>> | 84% | 34,983 psi | 56% | 2687 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 34,461 psi | 55% | 2703 fps | 96.9% |
| Alliant Reloder-23 | <<locked>> | 92% | 32,416 psi | 52% | 2644 fps | 96% |
| Alliant Reloder-26 | <<locked>> | 94% | 37,913 psi | 61% | 2844 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 46,398 psi | 74% | 2881 fps | 98.5% |
| Bofors RP3 | <<locked>> | 80% | 39,668 psi | 64% | 2746 fps | 98.8% |
| Bofors RP7 | <<locked>> | 90% | 48,602 psi | 78% | 2881 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 50,604 psi | 81% | 2867 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 48,312 psi | 77% | 2907 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 40,379 psi | 65% | 2746 fps | 96.4% |
| Hodgdon H414 | <<locked>> | 90% | 45,774 psi | 73% | 2910 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 90% | 49,676 psi | 80% | 2936 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 47,543 psi | 76% | 2887 fps | 99.6% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 30,211 psi | 48% | 2526 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 43,540 psi | 70% | 2854 fps | 99.4% |
| Hodgdon Superformance | 69.3 gr | 90% | 45,687 psi | 73% | 2930 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,542 psi | 43% | 1670 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,513 psi | 73% | 2835 fps | 99.4% |
| IMR 3031 | <<locked>> | 80% | 47,384 psi | 76% | 2881 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,872 psi | 67% | 2749 fps | 98.1% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,367 psi | 71% | 2772 fps | 95.1% |
| IMR 4350 | <<locked>> | 94% | 48,979 psi | 79% | 2907 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 86% | 44,585 psi | 71% | 2802 fps | 95% |
| IMR 4831 | <<locked>> | 86% | 36,187 psi | 58% | 2687 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 43,787 psi | 70% | 2841 fps | 98.9% |
| IMR 8208 XBR | <<locked>> | 80% | 49,139 psi | 79% | 2884 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 46,354 psi | 74% | 2851 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 46,630 psi | 75% | 2805 fps | 99.3% |
| Lovex S062 | <<locked>> | 80% | 41,843 psi | 67% | 2753 fps | 99.3% |
| Lovex S065 | <<locked>> | 84% | 39,146 psi | 63% | 2690 fps | 95% |
| Lovex S070 | <<locked>> | 90% | 44,846 psi | 72% | 2831 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 45,905 psi | 74% | 2822 fps | 99.7% |
| Norma 202 | <<locked>> | 80% | 46,267 psi | 74% | 2828 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,105 psi | 68% | 2795 fps | 98.5% |
| Norma URP | <<locked>> | 84% | 35,244 psi | 57% | 2677 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 41,785 psi | 67% | 2808 fps | 98.3% |
| Ramshot Hunter | <<locked>> | 90% | 41,800 psi | 67% | 2835 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 49,023 psi | 79% | 2887 fps | 97.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 48,791 psi | 78% | 2910 fps | 99.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,977 psi | 43% | 1713 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 43,323 psi | 69% | 2785 fps | 95.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 45,266 psi | 73% | 2920 fps | 98.6% |
| ReloadSwiss RS 60 | 58.3 gr | 80% | 36,666 psi | 59% | 2776 fps | 99.5% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 37,333 psi | 60% | 2753 fps | 95.7% |
| ReloadSwiss RS 70 | 65.1 gr | 88% | 39,769 psi | 64% | 2822 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 50,038 psi | 80% | 2867 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 43,845 psi | 70% | 2776 fps | 99.5% |
| Rottweil R 903 | <<locked>> | 80% | 37,289 psi | 60% | 2684 fps | 98% |
| Rottweil R 907 | <<locked>> | 90% | 48,602 psi | 78% | 2881 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 84% | 39,146 psi | 63% | 2690 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 46,354 psi | 74% | 2851 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 41,843 psi | 67% | 2753 fps | 99.3% |
| Shooters World SW4350 | <<locked>> | 90% | 44,846 psi | 72% | 2831 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,247 psi | 61% | 2736 fps | 97.5% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,485 psi | 76% | 2864 fps | 98% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,542 psi | 73% | 2841 fps | 99.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,094 psi | 76% | 2772 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,349 psi | 63% | 2628 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 43,714 psi | 70% | 2743 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 46,746 psi | 75% | 2769 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 47,239 psi | 76% | 2861 fps | 99.3% |
| Somchem S355 | <<locked>> | 80% | 37,869 psi | 61% | 2687 fps | 98% |
| Somchem S365 | <<locked>> | 80% | 27,746 psi | 44% | 2507 fps | 95.5% |
| Somchem S385 | <<locked>> | 98% | 46,862 psi | 75% | 2900 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 53,011 psi | 85% | 2835 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 47,485 psi | 76% | 2766 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,381 psi | 70% | 2753 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,063 psi | 71% | 2762 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,216 psi | 58% | 2625 fps | 98.7% |
| Vihtavuori N160 | <<locked>> | 84% | 36,724 psi | 59% | 2677 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 49,327 psi | 79% | 2881 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 42,467 psi | 68% | 2749 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 36,289 psi | 58% | 2680 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 90% | 33,040 psi | 53% | 2667 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,010 psi | 51% | 2539 fps | 96.2% |
| Winchester 748 | <<locked>> | 80% | 49,313 psi | 79% | 2930 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 45,977 psi | 74% | 2913 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 94% | 30,690 psi | 49% | 2667 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,165 psi | 72% | 2844 fps | 99.4% |
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 | 152gr | Lehigh Defense Controlled Chaos. ReloadSwiss RS 70 delivers the highest muzzle velocity at 3,153 fps; across all powders the maximum-charge window runs from 1,870 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 152.0 gr projectile in 0.308" calls for a 1:12.0 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, ReloadSwiss RS 60 rank at the top here: for .300 H&H Mag. with the .308 | 152gr | Lehigh Defense Controlled Chaos 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.