Load Specifications
Bullet Manufacturer:Speer
Bullet Weight:150 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Caliber:.300 H&H Mag. load data
Case Length (l3):2.85"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:85.9 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:62,366 psi
Recommended Twist Rate:1:6.0
Load data in caliber .300 H&H Mag. with .308 | 150gr | Speer Magnum Tip Soft Point bullet and 93 powders. The key underlying parameters are shown in the table above.
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% | 53,084 psi | 85% | 2940 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 55,056 psi | 88% | 2995 fps | 97.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 47,732 psi | 77% | 2949 fps | 97.4% |
| Accurate 4064 | <<locked>> | 86% | 53,476 psi | 86% | 2995 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 53,809 psi | 86% | 3084 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 84% | 56,376 psi | 90% | 3074 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 54,186 psi | 87% | 3022 fps | 99.8% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 55,056 psi | 88% | 3114 fps | 96.3% |
| ADI Benchmark 8208 | <<locked>> | 82% | 55,100 psi | 88% | 3018 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 52,852 psi | 85% | 3140 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 54,520 psi | 87% | 3048 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 54,897 psi | 88% | 3068 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 96% | 54,607 psi | 88% | 3146 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 92% | 55,840 psi | 90% | 3176 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 54,056 psi | 87% | 3100 fps | 96.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,933 psi | 72% | 2976 fps | 99.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 51,242 psi | 82% | 3166 fps | 99.4% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 52,852 psi | 85% | 3031 fps | 99.5% |
| Bofors RP3 | <<locked>> | 88% | 55,332 psi | 89% | 3064 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 55,027 psi | 88% | 3035 fps | 97.4% |
| Hodgdon BL-C2 | <<locked>> | 82% | 54,955 psi | 88% | 3048 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 55,927 psi | 90% | 3077 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 94% | 56,246 psi | 90% | 3136 fps | 98.2% |
| Hodgdon H4350 | <<locked>> | 92% | 56,289 psi | 90% | 3094 fps | 97% |
| Hodgdon H4895 | <<locked>> | 82% | 53,461 psi | 86% | 3028 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 54,781 psi | 88% | 3068 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 53,359 psi | 86% | 3064 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 52,678 psi | 84% | 3104 fps | 97.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,911 psi | 58% | 1916 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 54,621 psi | 88% | 3035 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 53,911 psi | 86% | 3015 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 53,519 psi | 86% | 3002 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 84% | 53,011 psi | 85% | 2979 fps | 97.5% |
| IMR 4350 | <<locked>> | 96% | 55,767 psi | 89% | 3064 fps | 97.6% |
| IMR 4451 Enduron | <<locked>> | 90% | 53,403 psi | 86% | 3012 fps | 97.5% |
| IMR 4831 | <<locked>> | 96% | 54,273 psi | 87% | 3074 fps | 99.6% |
| IMR 4895 | <<locked>> | 86% | 56,347 psi | 90% | 3100 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 55,100 psi | 88% | 3018 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 53,055 psi | 85% | 2995 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 55,434 psi | 89% | 2995 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 53,737 psi | 86% | 3002 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 56,434 psi | 90% | 3061 fps | 99.1% |
| Lovex S070 | <<locked>> | 94% | 54,244 psi | 87% | 3045 fps | 98% |
| Norma 201 | <<locked>> | 84% | 55,013 psi | 88% | 3015 fps | 100% |
| Norma 202 | <<locked>> | 84% | 55,753 psi | 89% | 3018 fps | 100% |
| Norma 203B | <<locked>> | 86% | 54,186 psi | 87% | 3054 fps | 99.9% |
| Norma MRPᴾ | <<locked>> | 100% | 50,647 psi | 81% | 3117 fps | 97.1% |
| Norma URP | <<locked>> | 96% | 56,217 psi | 90% | 3127 fps | 99.7% |
| Ramshot Big Game | <<locked>> | 86% | 54,911 psi | 88% | 3081 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 96% | 55,027 psi | 88% | 3120 fps | 98.7% |
| Ramshot TAC | <<locked>> | 82% | 55,390 psi | 89% | 3038 fps | 99.1% |
| Ramshot Wild Boar | <<locked>> | 82% | 55,259 psi | 89% | 3058 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,506 psi | 59% | 1959 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 55,985 psi | 90% | 3058 fps | 98.5% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 55,521 psi | 89% | 3136 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 55,579 psi | 89% | 3176 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 53,476 psi | 86% | 3100 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 56,202 psi | 90% | 3192 fps | 99.6% |
| Rottweil R 901 | <<locked>> | 82% | 56,043 psi | 90% | 2999 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 55,724 psi | 89% | 3018 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 55,143 psi | 88% | 3054 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 53,272 psi | 85% | 3084 fps | 96.2% |
| Rottweil R 907 | <<locked>> | 92% | 55,027 psi | 88% | 3035 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 94% | 56,434 psi | 90% | 3061 fps | 99.1% |
| Shooters World Match Rifle | <<locked>> | 82% | 53,055 psi | 85% | 2995 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 53,737 psi | 86% | 3002 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 54,244 psi | 87% | 3045 fps | 98% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 53,272 psi | 85% | 3061 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 54,114 psi | 87% | 3018 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 54,781 psi | 88% | 3041 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 56,159 psi | 90% | 2953 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 53,461 psi | 86% | 2904 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 53,040 psi | 85% | 2953 fps | 97.6% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 52,779 psi | 85% | 3077 fps | 96.1% |
| Somchem S335 | <<locked>> | 84% | 55,680 psi | 89% | 2946 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 53,795 psi | 86% | 3009 fps | 99.9% |
| Somchem S355 | <<locked>> | 90% | 55,347 psi | 89% | 3054 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 54,694 psi | 88% | 3127 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 53,867 psi | 86% | 3061 fps | 97.2% |
| Vihtavuori N133 | <<locked>> | 82% | 53,258 psi | 85% | 2887 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 55,753 psi | 89% | 2982 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 56,347 psi | 90% | 2995 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 53,156 psi | 85% | 2976 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 54,955 psi | 88% | 3068 fps | 99.6% |
| Vihtavuori N530 | <<locked>> | 82% | 55,651 psi | 89% | 3022 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 54,578 psi | 88% | 2989 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 54,056 psi | 87% | 3071 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 50,227 psi | 81% | 3061 fps | 99.5% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 54,868 psi | 88% | 3038 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 56,130 psi | 90% | 3071 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 52,707 psi | 85% | 3074 fps | 97.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,567 psi | 65% | 3002 fps | 99.8% |
| Winchester StaBALL Match | <<locked>> | 84% | 54,882 psi | 88% | 3051 fps | 100% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 46,630 psi | 75% | 2841 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 48,298 psi | 77% | 2874 fps | 95.7% |
| Accurate 3100 | <<locked>> | 96% | 41,510 psi | 67% | 2828 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 44,092 psi | 71% | 2835 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 35,331 psi | 57% | 2710 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 49,632 psi | 80% | 2959 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 80% | 42,250 psi | 68% | 2799 fps | 98.2% |
| ADI AR 2209 | <<locked>> | 98% | 51,517 psi | 83% | 3048 fps | 95.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,706 psi | 83% | 2966 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,832 psi | 73% | 3005 fps | 98.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,206 psi | 68% | 2822 fps | 99.3% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,252 psi | 73% | 2894 fps | 98.9% |
| Alliant Reloder-16 | <<locked>> | 82% | 34,954 psi | 56% | 2720 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 36,767 psi | 59% | 2795 fps | 98% |
| Alliant Reloder-19 | <<locked>> | 98% | 50,691 psi | 81% | 3038 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 88% | 30,734 psi | 49% | 2621 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 90% | 35,650 psi | 57% | 2812 fps | 95% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,371 psi | 79% | 2969 fps | 99.1% |
| Bofors RP3 | <<locked>> | 80% | 42,380 psi | 68% | 2831 fps | 99.4% |
| Bofors RP7 | <<locked>> | 86% | 45,542 psi | 73% | 2858 fps | 95.2% |
| Hodgdon BL-C2 | <<locked>> | 80% | 51,300 psi | 82% | 2992 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,873 psi | 69% | 2835 fps | 97.4% |
| Hodgdon H414 | <<locked>> | 86% | 43,091 psi | 69% | 2887 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 88% | 49,530 psi | 79% | 2972 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 50,125 psi | 80% | 2972 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,313 psi | 49% | 2556 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,644 psi | 75% | 2946 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 88% | 45,600 psi | 73% | 2966 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,803 psi | 43% | 1713 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,008 psi | 77% | 2920 fps | 99.7% |
| IMR 3031 | <<locked>> | 80% | 50,372 psi | 81% | 2963 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,396 psi | 71% | 2838 fps | 98.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,731 psi | 75% | 2861 fps | 96.2% |
| IMR 4350 | <<locked>> | 90% | 46,035 psi | 74% | 2887 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 84% | 44,396 psi | 71% | 2838 fps | 95.4% |
| IMR 4831 | <<locked>> | 82% | 34,142 psi | 55% | 2664 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 46,354 psi | 74% | 2923 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 80% | 51,706 psi | 83% | 2966 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 49,472 psi | 79% | 2936 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,066 psi | 79% | 2887 fps | 99.7% |
| Lovex S062 | <<locked>> | 80% | 44,483 psi | 71% | 2841 fps | 99.7% |
| Lovex S065 | <<locked>> | 82% | 39,015 psi | 63% | 2723 fps | 95.4% |
| Lovex S070 | <<locked>> | 86% | 42,177 psi | 68% | 2812 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 48,588 psi | 78% | 2907 fps | 100% |
| Norma 202 | <<locked>> | 80% | 49,008 psi | 79% | 2910 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,628 psi | 72% | 2881 fps | 99.1% |
| Norma MRP | <<locked>> | 96% | 44,121 psi | 71% | 2986 fps | 95.2% |
| Norma URP | <<locked>> | 82% | 35,331 psi | 57% | 2707 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 44,614 psi | 72% | 2897 fps | 99% |
| Ramshot Hunter | <<locked>> | 88% | 42,047 psi | 67% | 2871 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 51,851 psi | 83% | 2979 fps | 98.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,663 psi | 83% | 2999 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,238 psi | 44% | 1755 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,091 psi | 69% | 2815 fps | 95.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,472 psi | 78% | 3015 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,117 psi | 63% | 2864 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 35,027 psi | 56% | 2723 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 37,130 psi | 60% | 2792 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 52,576 psi | 84% | 2946 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 46,340 psi | 74% | 2858 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 80% | 39,856 psi | 64% | 2772 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 98% | 49,763 psi | 80% | 3022 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 86% | 45,542 psi | 73% | 2858 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 82% | 39,015 psi | 63% | 2723 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,472 psi | 79% | 2936 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,483 psi | 71% | 2841 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 86% | 42,177 psi | 68% | 2812 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,901 psi | 66% | 2825 fps | 98.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,546 psi | 81% | 2956 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,254 psi | 77% | 2930 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,690 psi | 80% | 2854 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,713 psi | 67% | 2707 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 43,584 psi | 70% | 2779 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 49,284 psi | 79% | 3015 fps | 95.2% |
| Somchem S335 | <<locked>> | 80% | 49,298 psi | 79% | 2851 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,270 psi | 81% | 2949 fps | 99.7% |
| Somchem S355 | <<locked>> | 80% | 40,350 psi | 65% | 2772 fps | 98.7% |
| Somchem S365 | <<locked>> | 80% | 29,733 psi | 48% | 2595 fps | 96.8% |
| Somchem S385 | <<locked>> | 96% | 47,210 psi | 76% | 2940 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 80% | 50,125 psi | 80% | 2841 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,209 psi | 74% | 2831 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,615 psi | 75% | 2841 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,537 psi | 62% | 2703 fps | 99.3% |
| Vihtavuori N160 | <<locked>> | 80% | 34,447 psi | 55% | 2654 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 52,127 psi | 84% | 2966 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,933 psi | 72% | 2828 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 36,332 psi | 58% | 2710 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 88% | 33,591 psi | 54% | 2703 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,113 psi | 55% | 2628 fps | 97.4% |
| Winchester 748 | <<locked>> | 80% | 52,359 psi | 84% | 3012 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 43,091 psi | 69% | 2887 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 92% | 31,009 psi | 50% | 2713 fps | 96.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 48,066 psi | 77% | 2933 fps | 99.8% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 113 powders for .300 H&H Mag. loaded with the .308 | 150gr | Speer Magnum Tip Soft Point. ReloadSwiss RS 70 delivers the highest muzzle velocity at 3,192 fps; across all powders the maximum-charge window runs from 1,916 fps to 3,192 fps. Accurate 3100 gives the best case fill at 100 %, and 113 of the 113 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 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, Accurate MAGPRO 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. As outliers, Accurate High Country, Accurate MAGPRO, ADI AR 2213 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.