Load Specifications
Load data in caliber .300 H&H Mag. with .308 | 142gr | IBEX TRD 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 70, ReloadSwiss RS 60 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% | 55,782 psi | 89% | 2992 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 56,072 psi | 90% | 3028 fps | 100% |
| Accurate 3100ᴾ | <<locked>> | 100% | 45,992 psi | 74% | 2953 fps | 95.9% |
| Accurate 4064 | <<locked>> | 88% | 55,927 psi | 90% | 3077 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 55,158 psi | 88% | 3146 fps | 99.2% |
| ADI AR 2206H | <<locked>> | 84% | 54,534 psi | 87% | 3084 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 90% | 55,390 psi | 89% | 3084 fps | 99.5% |
| ADI Benchmark 8208 | <<locked>> | 82% | 53,388 psi | 86% | 3035 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 54,665 psi | 88% | 3022 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 53,925 psi | 86% | 3199 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 55,883 psi | 90% | 3114 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 52,997 psi | 85% | 3074 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 98% | 55,303 psi | 89% | 3196 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 92% | 52,939 psi | 85% | 3176 fps | 99.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,279 psi | 69% | 2979 fps | 98.8% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 48,646 psi | 78% | 3153 fps | 98.1% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 54,128 psi | 87% | 3094 fps | 99.1% |
| Bofors RP3 | <<locked>> | 88% | 53,563 psi | 86% | 3081 fps | 99.9% |
| Bofors RP7 | <<locked>> | 92% | 53,417 psi | 86% | 3038 fps | 96% |
| Hodgdon Benchmark | <<locked>> | 82% | 55,027 psi | 88% | 3018 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 53,214 psi | 85% | 3068 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 54,099 psi | 87% | 3084 fps | 98.7% |
| Hodgdon H414 | <<locked>> | 94% | 53,563 psi | 86% | 3127 fps | 96.8% |
| Hodgdon H4895 | <<locked>> | 84% | 55,143 psi | 88% | 3097 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 55,259 psi | 89% | 3123 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 54,462 psi | 87% | 3130 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 53,983 psi | 87% | 3159 fps | 96.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,100 psi | 58% | 1939 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 55,898 psi | 90% | 3094 fps | 99.9% |
| IMR 3031 | <<locked>> | 84% | 55,419 psi | 89% | 3091 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 54,984 psi | 88% | 3068 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 86% | 54,636 psi | 88% | 3035 fps | 96.8% |
| IMR 4350 | <<locked>> | 96% | 53,301 psi | 85% | 3054 fps | 96% |
| IMR 4451 Enduron | <<locked>> | 92% | 54,679 psi | 88% | 3064 fps | 96.8% |
| IMR 4831 | <<locked>> | 98% | 55,187 psi | 88% | 3130 fps | 99.2% |
| IMR 4895 | <<locked>> | 86% | 54,302 psi | 87% | 3110 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 82% | 53,388 psi | 86% | 3035 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 54,897 psi | 88% | 3068 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 53,722 psi | 86% | 3009 fps | 99.6% |
| Lovex S062 | <<locked>> | 88% | 55,463 psi | 89% | 3074 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 54,636 psi | 88% | 3064 fps | 98.1% |
| Lovex S070 | <<locked>> | 96% | 55,564 psi | 89% | 3100 fps | 97.3% |
| Norma 201 | <<locked>> | 84% | 54,070 psi | 87% | 3038 fps | 100% |
| Norma 202 | <<locked>> | 84% | 54,128 psi | 87% | 3038 fps | 100% |
| Norma 203B | <<locked>> | 88% | 55,782 psi | 89% | 3123 fps | 99.8% |
| Norma URP | <<locked>> | 96% | 53,476 psi | 86% | 3127 fps | 98.9% |
| Ramshot Big Game | <<locked>> | 88% | 56,057 psi | 90% | 3143 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 98% | 55,564 psi | 89% | 3169 fps | 98% |
| Ramshot TAC | <<locked>> | 82% | 53,519 psi | 86% | 3041 fps | 98.1% |
| Ramshot Wild Boar | <<locked>> | 82% | 53,345 psi | 86% | 3068 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,579 psi | 59% | 1982 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 54,027 psi | 87% | 3054 fps | 97.3% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 53,316 psi | 85% | 3146 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 56,188 psi | 90% | 3238 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 54,346 psi | 87% | 3163 fps | 98.9% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 53,461 psi | 86% | 3179 fps | 98.6% |
| Rottweil R 901 | <<locked>> | 82% | 55,463 psi | 89% | 3028 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 54,563 psi | 87% | 3038 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 53,621 psi | 86% | 3071 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 92% | 53,417 psi | 86% | 3038 fps | 96% |
| Shooters World Long Rifle | <<locked>> | 94% | 54,636 psi | 88% | 3064 fps | 98.1% |
| Shooters World Match Rifle | <<locked>> | 84% | 54,897 psi | 88% | 3068 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 55,463 psi | 89% | 3074 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 55,564 psi | 89% | 3100 fps | 97.3% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 54,375 psi | 87% | 3123 fps | 99.7% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 55,912 psi | 90% | 3084 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 56,304 psi | 90% | 3107 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 54,636 psi | 88% | 2972 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 54,868 psi | 88% | 2966 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 54,839 psi | 88% | 3012 fps | 96.9% |
| Somchem S335 | <<locked>> | 84% | 54,592 psi | 88% | 2972 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 55,230 psi | 89% | 3071 fps | 99.7% |
| Somchem S355 | <<locked>> | 90% | 53,708 psi | 86% | 3068 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 55,158 psi | 88% | 3189 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 54,810 psi | 88% | 2956 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 54,143 psi | 87% | 3005 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 54,505 psi | 87% | 3012 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 54,853 psi | 88% | 3045 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 55,912 psi | 90% | 3123 fps | 99.1% |
| Vihtavuori N530 | <<locked>> | 82% | 53,954 psi | 87% | 3035 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 56,217 psi | 90% | 3058 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 55,013 psi | 88% | 3123 fps | 98.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 47,776 psi | 77% | 3064 fps | 98.7% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 55,825 psi | 90% | 3094 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 53,809 psi | 86% | 3084 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 53,809 psi | 86% | 3133 fps | 96.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,233 psi | 63% | 2989 fps | 98.8% |
| Winchester StaBALL Match | <<locked>> | 86% | 56,318 psi | 90% | 3117 fps | 99.9% |
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% | 52,736 psi | 85% | 2943 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 46,746 psi | 75% | 2881 fps | 100% |
| Accurate 3100 | <<locked>> | 98% | 43,207 psi | 69% | 2897 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 44,150 psi | 71% | 2874 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 37,289 psi | 60% | 2789 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 48,414 psi | 78% | 2976 fps | 99.1% |
| ADI AR 2208 | <<locked>> | 80% | 41,336 psi | 66% | 2812 fps | 97.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,212 psi | 81% | 2979 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 80% | 51,227 psi | 82% | 2969 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,237 psi | 71% | 3005 fps | 97.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,437 psi | 66% | 2841 fps | 98.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,208 psi | 71% | 2907 fps | 97.9% |
| Alliant Reloder-16 | <<locked>> | 86% | 38,798 psi | 62% | 2851 fps | 95.9% |
| Alliant Reloder-17 | 59 gr | 80% | 36,085 psi | 58% | 2808 fps | 96.8% |
| Alliant Reloder-23 | <<locked>> | 92% | 34,272 psi | 55% | 2753 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 94% | 39,653 psi | 64% | 2946 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 47,616 psi | 76% | 2976 fps | 98.2% |
| Bofors RP3 | <<locked>> | 80% | 41,669 psi | 67% | 2854 fps | 98.7% |
| Bofors RP7 | <<locked>> | 90% | 50,256 psi | 81% | 2979 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 51,880 psi | 83% | 2966 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 49,864 psi | 80% | 3009 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 80% | 42,206 psi | 68% | 2851 fps | 96.2% |
| Hodgdon H414 | <<locked>> | 90% | 47,195 psi | 76% | 3009 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 48,849 psi | 78% | 2986 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 32,068 psi | 51% | 2631 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 44,933 psi | 72% | 2956 fps | 99.2% |
| Hodgdon Superformance | <<locked>> | 92% | 50,328 psi | 81% | 3091 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,948 psi | 43% | 1732 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 46,601 psi | 75% | 2930 fps | 99.1% |
| IMR 3031 | <<locked>> | 80% | 48,747 psi | 78% | 2986 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,439 psi | 70% | 2848 fps | 97.9% |
| IMR 4166 Enduron | <<locked>> | 82% | 48,530 psi | 78% | 2923 fps | 95.5% |
| IMR 4350 | <<locked>> | 94% | 50,154 psi | 80% | 2999 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 88% | 48,559 psi | 78% | 2949 fps | 95.3% |
| IMR 4831 | <<locked>> | 86% | 38,189 psi | 61% | 2799 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 45,223 psi | 73% | 2940 fps | 98.6% |
| IMR 8208 XBR | <<locked>> | 80% | 50,212 psi | 81% | 2979 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 48,327 psi | 77% | 2959 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,921 psi | 77% | 2900 fps | 99% |
| Lovex S062 | <<locked>> | 80% | 43,816 psi | 70% | 2861 fps | 99.2% |
| Lovex S065 | <<locked>> | 86% | 43,308 psi | 69% | 2848 fps | 95.6% |
| Lovex S070 | <<locked>> | 90% | 46,702 psi | 75% | 2936 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 47,935 psi | 77% | 2930 fps | 99.7% |
| Norma 202 | <<locked>> | 80% | 47,979 psi | 77% | 2933 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,613 psi | 70% | 2894 fps | 98.3% |
| Norma URP | <<locked>> | 86% | 39,334 psi | 63% | 2841 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 43,163 psi | 69% | 2904 fps | 98.1% |
| Ramshot Hunter | <<locked>> | 90% | 43,279 psi | 69% | 2933 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 50,256 psi | 81% | 2982 fps | 97.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,096 psi | 80% | 3009 fps | 99.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,456 psi | 44% | 1775 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 45,049 psi | 72% | 2887 fps | 95.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 46,717 psi | 75% | 3022 fps | 98.4% |
| ReloadSwiss RS 60 | 59 gr | 80% | 38,189 psi | 61% | 2877 fps | 99.4% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 39,030 psi | 63% | 2858 fps | 95.4% |
| ReloadSwiss RS 70 | 65.9 gr | 88% | 41,234 psi | 66% | 2920 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 52,272 psi | 84% | 2976 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,774 psi | 73% | 2881 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 80% | 39,407 psi | 63% | 2795 fps | 98% |
| Rottweil R 907 | <<locked>> | 90% | 50,256 psi | 81% | 2979 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 86% | 43,308 psi | 69% | 2848 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,327 psi | 77% | 2959 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,816 psi | 70% | 2861 fps | 99.2% |
| Shooters World SW4350 | <<locked>> | 90% | 46,702 psi | 75% | 2936 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,784 psi | 64% | 2838 fps | 97.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,110 psi | 79% | 2963 fps | 97.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 46,905 psi | 75% | 2940 fps | 98.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,689 psi | 78% | 2874 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,944 psi | 66% | 2730 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 48,443 psi | 78% | 2900 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 48,515 psi | 78% | 2874 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 48,530 psi | 78% | 2956 fps | 99% |
| Somchem S355 | <<locked>> | 80% | 39,914 psi | 64% | 2795 fps | 97.9% |
| Somchem S365 | <<locked>> | 80% | 29,689 psi | 48% | 2618 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 80% | 48,892 psi | 78% | 2864 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,237 psi | 73% | 2861 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,397 psi | 73% | 2861 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,898 psi | 61% | 2723 fps | 98.6% |
| Vihtavuori N160 | <<locked>> | 84% | 38,348 psi | 61% | 2779 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 50,517 psi | 81% | 2979 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 44,121 psi | 71% | 2854 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 37,971 psi | 61% | 2785 fps | 95% |
| Vihtavuori N555 | <<locked>> | 90% | 35,056 psi | 56% | 2782 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,591 psi | 54% | 2638 fps | 96% |
| Winchester 748 | <<locked>> | 80% | 50,604 psi | 81% | 3028 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 47,340 psi | 76% | 3012 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 94% | 32,663 psi | 52% | 2779 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 46,615 psi | 75% | 2946 fps | 99.2% |
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 .300 H&H Mag. loaded with the .308 | 142gr | IBEX TRD. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,238 fps; across all powders the maximum-charge window runs from 1,939 fps to 3,238 fps. Accurate 3100 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 58–90 %, leaving at least 10 % headroom. The 142.0 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, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for .300 H&H Mag. with the .308 | 142gr | IBEX TRD 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.