Load Specifications
Load data in caliber .300 H&H Mag. with .308 | 130gr | Barnes TTSX BT bullet and 92 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, 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>> | 86% | 54,940 psi | 88% | 3133 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 53,258 psi | 85% | 3150 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 52,881 psi | 85% | 3140 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 55,579 psi | 89% | 3222 fps | 100% |
| Accurate 4064 | <<locked>> | 92% | 52,953 psi | 85% | 3186 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 53,011 psi | 85% | 3255 fps | 98.3% |
| ADI AR 2206H | <<locked>> | 88% | 54,360 psi | 87% | 3228 fps | 99.3% |
| ADI AR 2208 | <<locked>> | 94% | 55,521 psi | 89% | 3225 fps | 99% |
| ADI Benchmark 8208 | <<locked>> | 86% | 53,505 psi | 86% | 3179 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 86% | 53,838 psi | 86% | 3166 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 54,911 psi | 88% | 3294 fps | 99.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 54,172 psi | 87% | 3343 fps | 98.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 55,274 psi | 89% | 3248 fps | 99.8% |
| Alliant Reloder-10x | <<locked>> | 82% | 54,505 psi | 87% | 3143 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 55,753 psi | 89% | 3268 fps | 99.2% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 51,517 psi | 83% | 3264 fps | 98.4% |
| Alliant Reloder-17 | <<locked>> | 98% | 56,376 psi | 90% | 3373 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 54,244 psi | 87% | 3232 fps | 98.6% |
| Bofors RP3 | <<locked>> | 94% | 55,825 psi | 90% | 3264 fps | 99.8% |
| Hodgdon Benchmark | <<locked>> | 86% | 55,230 psi | 89% | 3166 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 52,489 psi | 84% | 3199 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 84% | 54,491 psi | 87% | 3307 fps | 99% |
| Hodgdon H322 | <<locked>> | 82% | 53,795 psi | 86% | 3182 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 55,129 psi | 88% | 3205 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 53,200 psi | 85% | 3209 fps | 97.9% |
| Hodgdon H4895 | <<locked>> | 88% | 54,868 psi | 88% | 3241 fps | 99.6% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 47,500 psi | 76% | 3127 fps | 98.8% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 54,085 psi | 87% | 3268 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,954 psi | 56% | 2018 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 56,333 psi | 90% | 3245 fps | 99.7% |
| IMR 3031 | <<locked>> | 88% | 54,534 psi | 87% | 3232 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 54,868 psi | 88% | 3205 fps | 99.1% |
| IMR 4166 Enduron | <<locked>> | 90% | 55,143 psi | 88% | 3179 fps | 96% |
| IMR 4198 | <<locked>> | 82% | 54,766 psi | 88% | 3104 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 54,679 psi | 88% | 3196 fps | 95.8% |
| IMR 4831ᴾ | <<locked>> | 100% | 50,154 psi | 80% | 3186 fps | 97.9% |
| IMR 4895 | <<locked>> | 90% | 53,664 psi | 86% | 3245 fps | 99.3% |
| IMR 8208 XBR | <<locked>> | 86% | 53,505 psi | 86% | 3179 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 82% | 53,403 psi | 86% | 3159 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 53,780 psi | 86% | 3202 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 54,157 psi | 87% | 3156 fps | 99.3% |
| Lovex S062 | <<locked>> | 92% | 54,273 psi | 87% | 3202 fps | 99.8% |
| Lovex S065 | <<locked>> | 98% | 53,809 psi | 86% | 3186 fps | 97.2% |
| Lovex S070ᴾ | <<locked>> | 100% | 54,520 psi | 87% | 3215 fps | 96.2% |
| Norma 201 | <<locked>> | 90% | 56,289 psi | 90% | 3225 fps | 99.9% |
| Norma 202 | <<locked>> | 88% | 53,563 psi | 86% | 3179 fps | 100% |
| Norma 203B | <<locked>> | 92% | 54,911 psi | 88% | 3255 fps | 99.4% |
| Norma URPᴾ | <<locked>> | 100% | 52,301 psi | 84% | 3241 fps | 98.1% |
| Ramshot Big Game | <<locked>> | 92% | 55,898 psi | 90% | 3281 fps | 99.4% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 51,445 psi | 82% | 3228 fps | 96.3% |
| Ramshot TAC | <<locked>> | 86% | 53,838 psi | 86% | 3182 fps | 97.4% |
| Ramshot Wild Boar | <<locked>> | 86% | 53,229 psi | 85% | 3205 fps | 99.2% |
| Ramshot X-Terminator | <<locked>> | 84% | 54,607 psi | 88% | 3179 fps | 99.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,172 psi | 56% | 2060 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 56,434 psi | 90% | 3219 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 53,722 psi | 86% | 3186 fps | 96.4% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 56,362 psi | 90% | 3343 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 56,115 psi | 90% | 3379 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 52,953 psi | 85% | 3274 fps | 98.1% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 53,185 psi | 85% | 3304 fps | 97.7% |
| Rottweil R 901 | <<locked>> | 86% | 53,577 psi | 86% | 3156 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 53,301 psi | 85% | 3166 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 96% | 55,376 psi | 89% | 3248 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 98% | 53,809 psi | 86% | 3186 fps | 97.2% |
| Shooters World Match Rifle | <<locked>> | 88% | 53,780 psi | 86% | 3202 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 54,273 psi | 87% | 3202 fps | 99.8% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 54,520 psi | 87% | 3215 fps | 96.2% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 56,130 psi | 90% | 3186 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 53,940 psi | 86% | 3258 fps | 99.2% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 55,492 psi | 89% | 3169 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 55,753 psi | 89% | 3219 fps | 98.2% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 52,808 psi | 85% | 3189 fps | 99.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 54,781 psi | 88% | 3117 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 54,868 psi | 88% | 3110 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 54,259 psi | 87% | 3130 fps | 95.8% |
| Somchem S321 | <<locked>> | 84% | 54,723 psi | 88% | 3212 fps | 99.9% |
| Somchem S335 | <<locked>> | 88% | 53,896 psi | 86% | 3110 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 55,347 psi | 89% | 3212 fps | 99.4% |
| Somchem S355 | <<locked>> | 96% | 55,912 psi | 90% | 3248 fps | 99.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 46,673 psi | 75% | 3182 fps | 99.6% |
| Vihtavuori N130 | <<locked>> | 84% | 54,418 psi | 87% | 3084 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 54,940 psi | 88% | 3104 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 56,420 psi | 90% | 3192 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 54,070 psi | 87% | 3153 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 53,940 psi | 86% | 3173 fps | 99.9% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 55,114 psi | 88% | 3248 fps | 98.5% |
| Vihtavuori N530 | <<locked>> | 86% | 53,853 psi | 86% | 3176 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 92% | 55,782 psi | 89% | 3199 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 54,259 psi | 87% | 3251 fps | 98.2% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 56,173 psi | 90% | 3228 fps | 99.8% |
| Winchester 748 | <<locked>> | 86% | 53,650 psi | 86% | 3228 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 90% | 56,405 psi | 90% | 3258 fps | 99.7% |
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% | 45,310 psi | 73% | 2972 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 49,632 psi | 80% | 3091 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 37,463 psi | 60% | 2858 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 44,918 psi | 72% | 3035 fps | 99.7% |
| Accurate 4064 | <<locked>> | 80% | 35,418 psi | 57% | 2835 fps | 98.9% |
| Accurate 4350 | <<locked>> | 92% | 39,624 psi | 64% | 2982 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 41,872 psi | 67% | 2979 fps | 97.1% |
| ADI AR 2208 | <<locked>> | 82% | 37,913 psi | 61% | 2861 fps | 95% |
| ADI Benchmark 8208 | <<locked>> | 80% | 43,961 psi | 70% | 2999 fps | 98.6% |
| Alliant AR-Comp | <<locked>> | 80% | 43,627 psi | 70% | 2999 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 51,329 psi | 82% | 3232 fps | 99.3% |
| Alliant Power Pro 2000-MR | 62.1 gr | 82% | 40,741 psi | 65% | 3051 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,911 psi | 56% | 2822 fps | 95.8% |
| Alliant Reloder-10x | <<locked>> | 80% | 51,256 psi | 82% | 3091 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,579 psi | 60% | 2890 fps | 95.1% |
| Alliant Reloder-16 | <<locked>> | 92% | 39,784 psi | 64% | 3002 fps | 95.1% |
| Alliant Reloder-17 | 64.1 gr | 86% | 36,941 psi | 59% | 2956 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,075 psi | 66% | 2972 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 34,214 psi | 55% | 2815 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 45,774 psi | 73% | 2995 fps | 99.3% |
| Hodgdon BL-C2 | <<locked>> | 80% | 42,583 psi | 68% | 3009 fps | 98.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 47,036 psi | 75% | 3166 fps | 97.8% |
| Hodgdon H322 | <<locked>> | 80% | 50,343 psi | 81% | 3123 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 51,459 psi | 83% | 3146 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 43,468 psi | 70% | 3015 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 42,206 psi | 68% | 2992 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 36,419 psi | 58% | 2881 fps | 95.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,116 psi | 61% | 2943 fps | 97% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,889 psi | 42% | 1804 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,596 psi | 65% | 2940 fps | 97.2% |
| IMR 3031 | <<locked>> | 80% | 41,582 psi | 67% | 3002 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,217 psi | 60% | 2841 fps | 95.1% |
| IMR 4166 Enduron | <<locked>> | 88% | 51,793 psi | 83% | 3117 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 51,517 psi | 83% | 3054 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 94% | 51,358 psi | 82% | 3136 fps | 95% |
| IMR 4831 | <<locked>> | 94% | 40,973 psi | 66% | 2995 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 38,493 psi | 62% | 2927 fps | 96.1% |
| IMR 8208 XBR | <<locked>> | 80% | 43,961 psi | 70% | 2999 fps | 98.6% |
| Lovex D073.5 | <<locked>> | 80% | 49,559 psi | 79% | 3094 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 40,538 psi | 65% | 2953 fps | 99.2% |
| Lovex S060 | <<locked>> | 80% | 42,105 psi | 68% | 2917 fps | 97.2% |
| Lovex S062 | <<locked>> | 80% | 36,898 psi | 59% | 2844 fps | 97% |
| Lovex S065 | <<locked>> | 94% | 47,369 psi | 76% | 3064 fps | 95.7% |
| Lovex S070 | <<locked>> | 98% | 51,140 psi | 82% | 3156 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 40,698 psi | 65% | 2927 fps | 98% |
| Norma 202 | <<locked>> | 80% | 41,220 psi | 66% | 2946 fps | 99.6% |
| Norma 203B | <<locked>> | 80% | 36,985 psi | 59% | 2881 fps | 95.6% |
| Norma URP | <<locked>> | 94% | 42,728 psi | 69% | 3051 fps | 95.9% |
| Ramshot Big Game | <<locked>> | 80% | 36,579 psi | 59% | 2887 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 98% | 48,225 psi | 77% | 3166 fps | 95.5% |
| Ramshot TAC | <<locked>> | 82% | 47,152 psi | 76% | 3054 fps | 95.9% |
| Ramshot Wild Boar | <<locked>> | 80% | 43,381 psi | 70% | 3012 fps | 97.4% |
| Ramshot X-Terminator | <<locked>> | 80% | 47,616 psi | 76% | 3048 fps | 98.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,005 psi | 42% | 1844 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 49,414 psi | 79% | 3100 fps | 99.9% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 50,444 psi | 81% | 3123 fps | 95.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 39,175 psi | 63% | 2999 fps | 95.5% |
| ReloadSwiss RS 60 | 59.7 gr | 80% | 32,155 psi | 52% | 2831 fps | 96.5% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 42,511 psi | 68% | 3071 fps | 95.6% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 46,209 psi | 74% | 3156 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 44,411 psi | 71% | 2989 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 80% | 38,667 psi | 62% | 2871 fps | 97.5% |
| Rottweil R 903 | <<locked>> | 82% | 34,461 psi | 55% | 2812 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 94% | 47,369 psi | 76% | 3064 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 40,538 psi | 65% | 2953 fps | 99.2% |
| Shooters World Precision | <<locked>> | 80% | 36,898 psi | 59% | 2844 fps | 97% |
| Shooters World SW4350 | <<locked>> | 98% | 51,140 psi | 82% | 3156 fps | 95.4% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 52,344 psi | 84% | 3123 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 38,348 psi | 61% | 2936 fps | 95.9% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 52,141 psi | 84% | 3117 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 41,959 psi | 67% | 2953 fps | 95% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,364 psi | 65% | 2936 fps | 96.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 42,395 psi | 68% | 2897 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,041 psi | 56% | 2740 fps | 99.3% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 50,763 psi | 81% | 3071 fps | 95% |
| Somchem S321 | <<locked>> | 80% | 47,529 psi | 76% | 3084 fps | 99.4% |
| Somchem S335 | <<locked>> | 80% | 41,829 psi | 67% | 2894 fps | 99.9% |
| Somchem S341 | <<locked>> | 80% | 41,814 psi | 67% | 2956 fps | 97% |
| Somchem S355 | <<locked>> | 82% | 35,346 psi | 57% | 2825 fps | 95.6% |
| Somchem S365 | <<locked>> | 88% | 31,053 psi | 50% | 2792 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 48,066 psi | 77% | 2982 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 42,714 psi | 68% | 2900 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,072 psi | 61% | 2867 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,986 psi | 63% | 2874 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 80% | 31,546 psi | 51% | 2697 fps | 95.7% |
| Vihtavuori N160 | <<locked>> | 92% | 41,959 psi | 67% | 2995 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 43,990 psi | 71% | 2992 fps | 98.7% |
| Vihtavuori N540 | <<locked>> | 80% | 37,463 psi | 60% | 2848 fps | 99% |
| Vihtavuori N550 | <<locked>> | 92% | 41,220 psi | 66% | 2992 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 34,592 psi | 55% | 2785 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 43,381 psi | 70% | 3035 fps | 99.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,856 psi | 64% | 2940 fps | 97.2% |
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 92 powders for .300 H&H Mag. loaded with the .308 | 130gr | Barnes TTSX BT. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,379 fps; across all powders the maximum-charge window runs from 2,018 fps to 3,379 fps. Accurate 4350 gives the best case fill at 100 %, and 92 of the 92 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 130.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Hodgdon Hybrid 100V 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 Power Pro 2000-MR, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for .300 H&H Mag. with the .308 | 130gr | Barnes TTSX BT 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.