Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 150gr | Impala LWH CHP bullet and 86 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Reloder-16 and ReloadSwiss RS 70.
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>> | 82% | 54,375 psi | 87% | 2949 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 54,259 psi | 87% | 2979 fps | 97.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 51,532 psi | 83% | 3015 fps | 98.2% |
| Accurate 4064 | <<locked>> | 84% | 54,288 psi | 87% | 2999 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 53,766 psi | 86% | 3081 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 82% | 55,724 psi | 89% | 3061 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 53,316 psi | 85% | 3009 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 98% | 54,288 psi | 87% | 3100 fps | 96.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 55,579 psi | 89% | 3189 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 54,114 psi | 87% | 3038 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 54,433 psi | 87% | 3058 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 94% | 53,882 psi | 86% | 3133 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 90% | 54,984 psi | 88% | 3166 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 53,563 psi | 86% | 3091 fps | 96.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 47,935 psi | 77% | 3035 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,308 psi | 68% | 2933 fps | 96.8% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 54,650 psi | 88% | 3232 fps | 99.7% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 55,317 psi | 89% | 3071 fps | 99.7% |
| Bofors RP3 | <<locked>> | 86% | 55,376 psi | 89% | 3061 fps | 100% |
| Bofors RP7 | <<locked>> | 90% | 54,549 psi | 87% | 3025 fps | 97.4% |
| Hodgdon H380 | <<locked>> | 86% | 55,593 psi | 89% | 3068 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 92% | 55,506 psi | 89% | 3123 fps | 98.2% |
| Hodgdon H4350 | <<locked>> | 90% | 55,492 psi | 89% | 3081 fps | 96.9% |
| Hodgdon H4895 | <<locked>> | 82% | 56,289 psi | 90% | 3074 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 54,215 psi | 87% | 3058 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 56,246 psi | 90% | 3110 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 55,506 psi | 89% | 3153 fps | 97.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,550 psi | 59% | 1926 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 53,650 psi | 86% | 3015 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 56,144 psi | 90% | 3045 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 84% | 55,434 psi | 89% | 3018 fps | 98% |
| IMR 4350 | <<locked>> | 94% | 54,839 psi | 88% | 3048 fps | 97.5% |
| IMR 4451 Enduron | <<locked>> | 90% | 55,709 psi | 89% | 3051 fps | 98% |
| IMR 4831 | <<locked>> | 94% | 54,114 psi | 87% | 3071 fps | 99.6% |
| IMR 4895 | <<locked>> | 84% | 55,767 psi | 89% | 3091 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 54,592 psi | 88% | 2982 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 53,461 psi | 86% | 2995 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 56,101 psi | 90% | 3051 fps | 99.1% |
| Lovex S070 | <<locked>> | 92% | 54,114 psi | 87% | 3038 fps | 98% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,395 psi | 70% | 2864 fps | 96.5% |
| Norma 201 | <<locked>> | 82% | 55,013 psi | 88% | 3009 fps | 100% |
| Norma 202 | <<locked>> | 82% | 55,172 psi | 88% | 3005 fps | 100% |
| Norma 203B | <<locked>> | 84% | 53,751 psi | 86% | 3045 fps | 99.9% |
| Norma 204 | <<locked>> | 94% | 55,521 psi | 89% | 3100 fps | 96.3% |
| Norma MRPᴾ | <<locked>> | 100% | 53,722 psi | 86% | 3176 fps | 97.8% |
| Norma URP | <<locked>> | 94% | 55,724 psi | 89% | 3117 fps | 99.7% |
| Ramshot Big Game | <<locked>> | 84% | 54,143 psi | 87% | 3068 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 94% | 54,317 psi | 87% | 3110 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,072 psi | 59% | 1969 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 55,245 psi | 89% | 3041 fps | 98.5% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 54,955 psi | 88% | 3127 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 54,708 psi | 88% | 3163 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 53,200 psi | 85% | 3097 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 55,158 psi | 88% | 3176 fps | 99.5% |
| Rottweil R 902 | <<locked>> | 84% | 55,695 psi | 89% | 3012 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 55,434 psi | 89% | 3054 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 56,188 psi | 90% | 3136 fps | 96.9% |
| Rottweil R 907 | <<locked>> | 90% | 54,549 psi | 87% | 3025 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 92% | 56,101 psi | 90% | 3051 fps | 99.1% |
| Shooters World Precision | <<locked>> | 84% | 53,461 psi | 86% | 2995 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 54,114 psi | 87% | 3038 fps | 98% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 56,217 psi | 90% | 3107 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 54,056 psi | 87% | 3028 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 55,405 psi | 89% | 2936 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 55,970 psi | 90% | 2936 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 56,144 psi | 90% | 3002 fps | 98.1% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 55,666 psi | 89% | 3130 fps | 96.8% |
| Somchem S335 | <<locked>> | 82% | 55,361 psi | 89% | 2936 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 56,362 psi | 90% | 3045 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 55,056 psi | 88% | 3045 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 54,418 psi | 87% | 3123 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 53,853 psi | 86% | 3058 fps | 97.3% |
| Vihtavuori N133 | <<locked>> | 82% | 55,709 psi | 89% | 2920 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 55,448 psi | 89% | 2969 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 55,651 psi | 89% | 2982 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 56,260 psi | 90% | 3018 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 54,259 psi | 87% | 3054 fps | 99.5% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,255 psi | 79% | 2963 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 84% | 54,114 psi | 87% | 2979 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 53,621 psi | 86% | 3061 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 53,824 psi | 86% | 3123 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 53,853 psi | 86% | 3022 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 55,709 psi | 89% | 3127 fps | 98.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,700 psi | 70% | 3081 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 54,128 psi | 87% | 3035 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 53,388 psi | 86% | 3038 fps | 96% |
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 2495 | <<locked>> | 80% | 51,285 psi | 82% | 2904 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,834 psi | 77% | 2861 fps | 95.6% |
| Accurate 3100 | <<locked>> | 92% | 40,001 psi | 64% | 2789 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 48,472 psi | 78% | 2904 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,521 psi | 59% | 2733 fps | 96.2% |
| ADI AR 2206H | <<locked>> | 80% | 52,402 psi | 84% | 3005 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 44,672 psi | 72% | 2844 fps | 98.7% |
| ADI AR 2209 | <<locked>> | 96% | 50,966 psi | 82% | 3041 fps | 95.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,486 psi | 78% | 3058 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,324 psi | 73% | 2881 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,124 psi | 77% | 2943 fps | 99.3% |
| Alliant Reloder-16 | 57.7 gr | 80% | 35,447 psi | 57% | 2730 fps | 96% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,595 psi | 63% | 2861 fps | 98.9% |
| Alliant Reloder-19 | <<locked>> | 96% | 50,314 psi | 81% | 3031 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 84% | 29,892 psi | 48% | 2589 fps | 95.2% |
| Alliant Reloder-25 | <<locked>> | 96% | 37,652 psi | 60% | 2815 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 88% | 36,521 psi | 59% | 2835 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 51,866 psi | 83% | 3012 fps | 99.5% |
| Bofors RP3 | <<locked>> | 80% | 45,861 psi | 74% | 2897 fps | 99.8% |
| Bofors RP7 | <<locked>> | 84% | 45,730 psi | 73% | 2858 fps | 95.3% |
| Hodgdon H380 | <<locked>> | 80% | 45,992 psi | 74% | 2894 fps | 98.2% |
| Hodgdon H414 | <<locked>> | 84% | 43,062 psi | 69% | 2884 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 86% | 49,052 psi | 79% | 2963 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 53,011 psi | 85% | 3018 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,112 psi | 53% | 2628 fps | 96.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,443 psi | 79% | 2995 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 45,266 psi | 73% | 2959 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,412 psi | 44% | 1722 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,459 psi | 81% | 2959 fps | 99.9% |
| IMR 4064 | <<locked>> | 80% | 46,978 psi | 75% | 2884 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,139 psi | 79% | 2904 fps | 96.8% |
| IMR 4350 | <<locked>> | 88% | 45,876 psi | 74% | 2884 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 82% | 44,077 psi | 71% | 2828 fps | 95.4% |
| IMR 4831 | <<locked>> | 80% | 35,186 psi | 56% | 2684 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 49,342 psi | 79% | 2979 fps | 99.7% |
| Lovex S060 | <<locked>> | 80% | 51,430 psi | 82% | 2927 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 47,500 psi | 76% | 2890 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 39,697 psi | 64% | 2730 fps | 95.7% |
| Lovex S070 | <<locked>> | 84% | 42,670 psi | 68% | 2815 fps | 95.4% |
| Lovex S071 | <<locked>> | 98% | 40,843 psi | 65% | 2808 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 51,967 psi | 83% | 2959 fps | 100% |
| Norma 202 | <<locked>> | 80% | 52,112 psi | 84% | 2956 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,514 psi | 76% | 2933 fps | 99.5% |
| Norma 204 | <<locked>> | 92% | 51,851 psi | 83% | 3038 fps | 95.5% |
| Norma MRP | <<locked>> | 94% | 44,121 psi | 71% | 2986 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 36,100 psi | 58% | 2723 fps | 95.9% |
| Ramshot Big Game | <<locked>> | 80% | 47,427 psi | 76% | 2949 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 84% | 39,581 psi | 63% | 2815 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,775 psi | 45% | 1759 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,919 psi | 74% | 2867 fps | 96.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 51,561 psi | 83% | 3068 fps | 99.6% |
| ReloadSwiss RS 60 | 62.1 gr | 80% | 41,901 psi | 67% | 2927 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,911 psi | 58% | 2740 fps | 95.6% |
| ReloadSwiss RS 70 | 64.7 gr | 82% | 37,449 psi | 60% | 2799 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 80% | 49,501 psi | 79% | 2907 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,294 psi | 69% | 2838 fps | 99.4% |
| Rottweil R 905 | <<locked>> | 96% | 49,356 psi | 79% | 3015 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 84% | 45,730 psi | 73% | 2858 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,697 psi | 64% | 2730 fps | 95.7% |
| Shooters World Precision | <<locked>> | 80% | 47,500 psi | 76% | 2890 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 84% | 42,670 psi | 68% | 2815 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,700 psi | 70% | 2881 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,923 psi | 82% | 2972 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,243 psi | 84% | 2887 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,222 psi | 71% | 2749 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 43,816 psi | 70% | 2776 fps | 95.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 48,892 psi | 78% | 3009 fps | 95.2% |
| Somchem S335 | <<locked>> | 80% | 52,344 psi | 84% | 2890 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 52,779 psi | 85% | 2989 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 43,627 psi | 70% | 2838 fps | 99.3% |
| Somchem S365 | <<locked>> | 80% | 32,735 psi | 52% | 2677 fps | 98.2% |
| Somchem S385 | <<locked>> | 92% | 44,672 psi | 72% | 2887 fps | 95% |
| Vihtavuori N133 | <<locked>> | 80% | 52,518 psi | 84% | 2874 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 49,284 psi | 79% | 2874 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,371 psi | 79% | 2884 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,495 psi | 67% | 2762 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 37,289 psi | 60% | 2720 fps | 96.3% |
| Vihtavuori N165 | <<locked>> | 98% | 46,485 psi | 75% | 2910 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 47,790 psi | 77% | 2874 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,999 psi | 59% | 2723 fps | 95.9% |
| Vihtavuori N555 | <<locked>> | 84% | 32,851 psi | 53% | 2680 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,579 psi | 59% | 2687 fps | 98.3% |
| Winchester 760 | <<locked>> | 84% | 43,236 psi | 69% | 2887 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 88% | 30,240 psi | 48% | 2684 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,894 psi | 82% | 2982 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 98% | 49,995 psi | 80% | 2979 fps | 95.2% |
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 103 powders for .300 Win. Mag. loaded with the .308 | 150gr | Impala LWH CHP. Alliant Reloder-26 delivers the highest muzzle velocity at 3,232 fps; across all powders the maximum-charge window runs from 1,926 fps to 3,232 fps. Accurate 3100 gives the best case fill at 100 %, and 103 of the 103 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2213 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 60, Alliant Reloder-16, ReloadSwiss RS 70 rank at the top here: for .300 Win. Mag. with the .308 | 150gr | Impala LWH CHP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2213, Bofors RP15 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.