Load Specifications
Bullet:.308 | 150gr | Impala LW CFN
Bullet Manufacturer:Impala Bullets
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:1:13.0
Load data in caliber .300 H&H Mag. with .308 | 150gr | Impala LW CFN bullet and 89 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% | 55,303 psi | 89% | 2940 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 55,506 psi | 89% | 2966 fps | 96.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 48,617 psi | 78% | 2936 fps | 97.2% |
| Accurate 4064 | <<locked>> | 86% | 55,071 psi | 88% | 2986 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 54,346 psi | 87% | 3064 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 82% | 53,476 psi | 86% | 2995 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 88% | 54,244 psi | 87% | 2992 fps | 99.6% |
| ADI Benchmark 8208 | <<locked>> | 82% | 55,463 psi | 89% | 2992 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 52,779 psi | 85% | 3110 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 54,868 psi | 88% | 3022 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 55,230 psi | 89% | 3041 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 96% | 54,360 psi | 87% | 3110 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 92% | 55,840 psi | 90% | 3150 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 45,411 psi | 73% | 2959 fps | 99.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 51,213 psi | 82% | 3140 fps | 99.1% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 56,391 psi | 90% | 3058 fps | 99.6% |
| Bofors RP3 | <<locked>> | 88% | 55,999 psi | 90% | 3045 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 55,521 psi | 89% | 3005 fps | 97.1% |
| Hodgdon BL-C2 | <<locked>> | 82% | 55,492 psi | 89% | 3028 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 53,142 psi | 85% | 2995 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 94% | 56,159 psi | 90% | 3104 fps | 97.9% |
| Hodgdon H4350 | <<locked>> | 92% | 56,318 psi | 90% | 3061 fps | 96.6% |
| Hodgdon H4895 | <<locked>> | 82% | 54,041 psi | 87% | 3005 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 54,723 psi | 88% | 3038 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 53,606 psi | 86% | 3038 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 52,634 psi | 84% | 3071 fps | 96.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,347 psi | 58% | 1893 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 54,679 psi | 88% | 3002 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 54,389 psi | 87% | 2995 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 54,012 psi | 87% | 2979 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 84% | 53,417 psi | 86% | 2949 fps | 97.2% |
| IMR 4350 | <<locked>> | 96% | 55,521 psi | 89% | 3028 fps | 97.1% |
| IMR 4451 Enduron | <<locked>> | 90% | 53,505 psi | 86% | 2976 fps | 97.2% |
| IMR 4831 | <<locked>> | 96% | 54,578 psi | 88% | 3051 fps | 99.5% |
| IMR 4895 | <<locked>> | 84% | 53,272 psi | 85% | 3018 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 82% | 55,463 psi | 89% | 2992 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 53,940 psi | 86% | 2976 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 55,666 psi | 89% | 2969 fps | 99.9% |
| Lovex S062 | <<locked>> | 86% | 54,375 psi | 87% | 2982 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 53,867 psi | 86% | 2982 fps | 98.5% |
| Lovex S070 | <<locked>> | 94% | 54,853 psi | 88% | 3018 fps | 97.7% |
| Norma 201 | <<locked>> | 84% | 56,202 psi | 90% | 2999 fps | 100% |
| Norma 202 | <<locked>> | 84% | 56,347 psi | 90% | 2995 fps | 100% |
| Norma 203B | <<locked>> | 86% | 54,505 psi | 87% | 3028 fps | 99.9% |
| Norma 204 | <<locked>> | 96% | 56,231 psi | 90% | 3077 fps | 95.9% |
| Norma MRPᴾ | <<locked>> | 100% | 50,691 psi | 81% | 3087 fps | 96.7% |
| Norma URP | <<locked>> | 96% | 56,289 psi | 90% | 3100 fps | 99.6% |
| Ramshot Big Game | <<locked>> | 86% | 54,897 psi | 88% | 3051 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 96% | 54,824 psi | 88% | 3087 fps | 98.4% |
| Ramshot TAC | <<locked>> | 82% | 55,796 psi | 89% | 3012 fps | 98.9% |
| Ramshot Wild Boar | <<locked>> | 82% | 55,579 psi | 89% | 3031 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,883 psi | 59% | 1936 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 52,982 psi | 85% | 2969 fps | 97.7% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 55,883 psi | 90% | 3114 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 55,361 psi | 89% | 3146 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 53,708 psi | 86% | 3077 fps | 99.2% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 55,898 psi | 90% | 3156 fps | 99.3% |
| Rottweil R 902 | <<locked>> | 84% | 53,432 psi | 86% | 2946 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 56,057 psi | 90% | 3038 fps | 100% |
| Rottweil R 907 | <<locked>> | 92% | 55,521 psi | 89% | 3005 fps | 97.1% |
| Shooters World Long Rifle | <<locked>> | 92% | 53,867 psi | 86% | 2982 fps | 98.5% |
| Shooters World Match Rifle | <<locked>> | 82% | 53,940 psi | 86% | 2976 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 54,375 psi | 87% | 2982 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 54,853 psi | 88% | 3018 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 53,592 psi | 86% | 3038 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 54,592 psi | 88% | 2992 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 55,201 psi | 89% | 3018 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 53,476 psi | 86% | 2881 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 53,867 psi | 86% | 2877 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 53,664 psi | 86% | 2930 fps | 97.3% |
| Somchem S335 | <<locked>> | 82% | 53,359 psi | 86% | 2881 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 53,940 psi | 86% | 2979 fps | 99.8% |
| Somchem S355 | <<locked>> | 90% | 55,985 psi | 90% | 3031 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 54,563 psi | 87% | 3104 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 54,230 psi | 87% | 3035 fps | 96.8% |
| Vihtavuori N133 | <<locked>> | 82% | 53,708 psi | 86% | 2864 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 53,084 psi | 85% | 2913 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 53,403 psi | 86% | 2923 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 53,824 psi | 86% | 2956 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 54,940 psi | 88% | 3038 fps | 99.4% |
| Vihtavuori N530 | <<locked>> | 82% | 56,101 psi | 90% | 2995 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 55,056 psi | 88% | 2969 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 54,201 psi | 87% | 3041 fps | 99.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 50,488 psi | 81% | 3041 fps | 99.4% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 54,607 psi | 88% | 3005 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 56,173 psi | 90% | 3045 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 56,318 psi | 90% | 3107 fps | 97.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,162 psi | 66% | 2986 fps | 99.7% |
| Winchester StaBALL Match | <<locked>> | 84% | 55,259 psi | 89% | 3025 fps | 100% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 48,907 psi | 78% | 2841 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 48,863 psi | 78% | 2848 fps | 95.3% |
| Accurate 3100 | <<locked>> | 96% | 42,801 psi | 69% | 2825 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 46,166 psi | 74% | 2838 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 36,912 psi | 59% | 2717 fps | 95.8% |
| ADI AR 2206H | <<locked>> | 80% | 50,357 psi | 81% | 2940 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 80% | 42,975 psi | 69% | 2782 fps | 98.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 52,199 psi | 84% | 2943 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,238 psi | 74% | 2982 fps | 98.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,308 psi | 69% | 2812 fps | 99.3% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,151 psi | 74% | 2877 fps | 98.8% |
| Alliant Reloder-16 | <<locked>> | 82% | 35,911 psi | 58% | 2710 fps | 95.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,782 psi | 61% | 2789 fps | 98% |
| Alliant Reloder-23 | <<locked>> | 88% | 31,981 psi | 51% | 2625 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 92% | 39,102 psi | 63% | 2874 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,661 psi | 80% | 2943 fps | 98.9% |
| Bofors RP3 | <<locked>> | 80% | 43,671 psi | 70% | 2825 fps | 99.4% |
| Bofors RP7 | <<locked>> | 86% | 46,412 psi | 74% | 2838 fps | 95% |
| Hodgdon BL-C2 | <<locked>> | 80% | 52,040 psi | 83% | 2972 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,918 psi | 70% | 2822 fps | 97.3% |
| Hodgdon H414 | <<locked>> | 88% | 46,485 psi | 75% | 2927 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 88% | 49,748 psi | 80% | 2946 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 50,879 psi | 82% | 2953 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,589 psi | 51% | 2559 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,065 psi | 75% | 2923 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 88% | 46,006 psi | 74% | 2940 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,180 psi | 44% | 1693 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,501 psi | 78% | 2894 fps | 99.6% |
| IMR 3031 | <<locked>> | 80% | 51,039 psi | 82% | 2943 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,179 psi | 72% | 2818 fps | 98.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,413 psi | 76% | 2838 fps | 95.9% |
| IMR 4350 | <<locked>> | 90% | 46,441 psi | 74% | 2864 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 84% | 44,817 psi | 72% | 2812 fps | 95.1% |
| IMR 4831 | <<locked>> | 82% | 35,505 psi | 57% | 2667 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 47,224 psi | 76% | 2910 fps | 99.3% |
| IMR 8208 XBR | <<locked>> | 80% | 52,199 psi | 84% | 2943 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 50,546 psi | 81% | 2923 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,647 psi | 80% | 2867 fps | 99.6% |
| Lovex S062 | <<locked>> | 80% | 45,614 psi | 73% | 2828 fps | 99.7% |
| Lovex S065 | <<locked>> | 82% | 40,306 psi | 65% | 2717 fps | 95.4% |
| Lovex S070 | <<locked>> | 86% | 43,265 psi | 69% | 2799 fps | 95% |
| Norma 201 | <<locked>> | 80% | 49,879 psi | 80% | 2894 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 49,922 psi | 80% | 2894 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,542 psi | 73% | 2867 fps | 99.1% |
| Norma 204 | <<locked>> | 94% | 52,837 psi | 85% | 3022 fps | 95.2% |
| Norma MRP | <<locked>> | 98% | 47,398 psi | 76% | 3022 fps | 95.7% |
| Norma URP | <<locked>> | 82% | 36,492 psi | 59% | 2707 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 45,208 psi | 72% | 2881 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 88% | 42,728 psi | 69% | 2858 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 52,185 psi | 84% | 2949 fps | 98.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 52,170 psi | 84% | 2976 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,731 psi | 44% | 1732 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,034 psi | 71% | 2802 fps | 95.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 49,037 psi | 79% | 2995 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,987 psi | 64% | 2858 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 36,187 psi | 58% | 2723 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 40,451 psi | 65% | 2841 fps | 95.9% |
| Rottweil R 902 | <<locked>> | 80% | 47,572 psi | 76% | 2844 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 80% | 41,249 psi | 66% | 2769 fps | 98.8% |
| Rottweil R 907 | <<locked>> | 86% | 46,412 psi | 74% | 2838 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 82% | 40,306 psi | 65% | 2717 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 50,546 psi | 81% | 2923 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,614 psi | 73% | 2828 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 86% | 43,265 psi | 69% | 2799 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,655 psi | 67% | 2812 fps | 98.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,184 psi | 82% | 2933 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,849 psi | 78% | 2907 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,502 psi | 81% | 2831 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,612 psi | 68% | 2694 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 44,730 psi | 72% | 2766 fps | 95.2% |
| Somchem S335 | <<locked>> | 80% | 50,372 psi | 81% | 2831 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,589 psi | 81% | 2923 fps | 99.6% |
| Somchem S355 | <<locked>> | 80% | 41,640 psi | 67% | 2769 fps | 98.7% |
| Somchem S365 | <<locked>> | 80% | 31,111 psi | 50% | 2605 fps | 97.1% |
| Somchem S385 | <<locked>> | 96% | 47,761 psi | 77% | 2920 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 80% | 50,807 psi | 81% | 2822 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,326 psi | 76% | 2822 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,326 psi | 76% | 2825 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,639 psi | 64% | 2697 fps | 99.3% |
| Vihtavuori N160 | <<locked>> | 80% | 35,520 psi | 57% | 2648 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 52,562 psi | 84% | 2940 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 45,774 psi | 73% | 2812 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 37,536 psi | 60% | 2710 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 86% | 32,924 psi | 53% | 2657 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,998 psi | 56% | 2618 fps | 97.3% |
| Winchester 748 | <<locked>> | 80% | 52,866 psi | 85% | 2992 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 46,485 psi | 75% | 2927 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 90% | 30,385 psi | 49% | 2654 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 48,660 psi | 78% | 2913 fps | 99.7% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 112 powders for .300 H&H Mag. loaded with the .308 | 150gr | Impala LW CFN. ReloadSwiss RS 70 delivers the highest muzzle velocity at 3,156 fps; across all powders the maximum-charge window runs from 1,893 fps to 3,156 fps. Accurate 3100 gives the best case fill at 100 %, and 112 of the 112 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 1:13.0 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.