Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 150gr | Sierra SPFN 30-30 bullet and 82 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-26 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.
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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% | 54,201 psi | 87% | 2986 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 55,492 psi | 89% | 3045 fps | 97.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 53,084 psi | 85% | 3077 fps | 98.9% |
| Accurate 4064 | <<locked>> | 84% | 54,462 psi | 87% | 3038 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 55,332 psi | 89% | 3140 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 86% | 54,708 psi | 88% | 3071 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 98% | 56,347 psi | 90% | 3179 fps | 97.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 53,708 psi | 86% | 3189 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 55,434 psi | 89% | 3094 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 55,593 psi | 89% | 3114 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 55,927 psi | 90% | 3202 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 53,505 psi | 86% | 3169 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 55,550 psi | 89% | 3163 fps | 97.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 52,794 psi | 85% | 3159 fps | 96.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 49,864 psi | 80% | 3097 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,482 psi | 70% | 2999 fps | 97.9% |
| Alliant Reloder-26 | <<locked>> | 98% | 53,563 psi | 86% | 3238 fps | 99.8% |
| Bofors RP3 | <<locked>> | 86% | 56,347 psi | 90% | 3114 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 52,794 psi | 85% | 3159 fps | 96.9% |
| Bofors RP7 | <<locked>> | 90% | 55,680 psi | 89% | 3087 fps | 98.1% |
| Hodgdon H380 | <<locked>> | 84% | 53,156 psi | 85% | 3068 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 90% | 53,940 psi | 86% | 3133 fps | 98.4% |
| Hodgdon H4350 | <<locked>> | 88% | 53,679 psi | 86% | 3087 fps | 97.2% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 56,347 psi | 90% | 3123 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 54,143 psi | 87% | 3107 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 54,099 psi | 87% | 3169 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,187 psi | 58% | 1962 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 55,056 psi | 88% | 3074 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 54,027 psi | 87% | 3048 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 53,214 psi | 85% | 3025 fps | 98.2% |
| IMR 4350 | <<locked>> | 92% | 53,301 psi | 85% | 3064 fps | 97.8% |
| IMR 4451 Enduron | <<locked>> | 88% | 53,954 psi | 87% | 3061 fps | 98.2% |
| IMR 4831 | <<locked>> | 94% | 55,680 psi | 89% | 3130 fps | 99.9% |
| IMR 4895 | <<locked>> | 82% | 53,563 psi | 86% | 3091 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 55,680 psi | 89% | 3038 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 54,389 psi | 87% | 3048 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 54,041 psi | 87% | 3061 fps | 99.2% |
| Lovex S070 | <<locked>> | 92% | 55,361 psi | 89% | 3100 fps | 98.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 44,005 psi | 71% | 2907 fps | 97.2% |
| Norma 201 | <<locked>> | 82% | 55,695 psi | 89% | 3061 fps | 100% |
| Norma 202 | <<locked>> | 82% | 56,260 psi | 90% | 3058 fps | 100% |
| Norma 203B | <<locked>> | 84% | 54,882 psi | 88% | 3100 fps | 100% |
| Norma 204 | <<locked>> | 92% | 53,896 psi | 86% | 3110 fps | 96.7% |
| Norma MRPᴾ | <<locked>> | 100% | 56,420 psi | 90% | 3255 fps | 98.8% |
| Norma URP | <<locked>> | 92% | 54,012 psi | 87% | 3123 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 84% | 55,724 psi | 89% | 3127 fps | 100% |
| Ramshot Hunter | <<locked>> | 92% | 52,808 psi | 85% | 3117 fps | 98.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,970 psi | 59% | 2008 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 53,026 psi | 85% | 3045 fps | 98.6% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 52,953 psi | 85% | 3166 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 55,114 psi | 88% | 3159 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 53,664 psi | 86% | 3186 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 84% | 56,347 psi | 90% | 3061 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 52,895 psi | 85% | 3051 fps | 100% |
| Rottweil R 905 | <<locked>> | 98% | 54,766 psi | 88% | 3150 fps | 97.3% |
| Rottweil R 907 | <<locked>> | 90% | 55,680 psi | 89% | 3087 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 90% | 54,041 psi | 87% | 3061 fps | 99.2% |
| Shooters World Precision | <<locked>> | 84% | 54,389 psi | 87% | 3048 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 55,361 psi | 89% | 3100 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 54,389 psi | 87% | 3110 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 55,521 psi | 89% | 3091 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 56,391 psi | 90% | 2992 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 53,824 psi | 86% | 2940 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 53,664 psi | 86% | 3005 fps | 98.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 54,288 psi | 87% | 3143 fps | 97.2% |
| Somchem S335 | <<locked>> | 82% | 56,231 psi | 90% | 2989 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 56,289 psi | 90% | 3100 fps | 100% |
| Somchem S365 | <<locked>> | 94% | 53,214 psi | 85% | 3130 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 55,593 psi | 89% | 3127 fps | 98.1% |
| Vihtavuori N135 | <<locked>> | 82% | 53,142 psi | 85% | 2969 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 53,519 psi | 86% | 2986 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 54,186 psi | 87% | 3025 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 56,188 psi | 90% | 3120 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 51,184 psi | 82% | 3031 fps | 96.9% |
| Vihtavuori N540 | <<locked>> | 84% | 55,187 psi | 88% | 3028 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 55,303 psi | 89% | 3123 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 55,927 psi | 90% | 3186 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 55,869 psi | 90% | 3084 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 53,940 psi | 86% | 3133 fps | 98.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 45,165 psi | 72% | 3146 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 55,579 psi | 89% | 3094 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 55,883 psi | 90% | 3120 fps | 97.2% |
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% | 50,778 psi | 81% | 2933 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,588 psi | 78% | 2920 fps | 96.5% |
| Accurate 3100 | <<locked>> | 90% | 37,753 psi | 61% | 2769 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 48,051 psi | 77% | 2936 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,477 psi | 58% | 2762 fps | 96.6% |
| ADI AR 2208 | <<locked>> | 80% | 45,382 psi | 73% | 2900 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 94% | 49,443 psi | 79% | 3054 fps | 95.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,067 psi | 80% | 3123 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,759 psi | 73% | 2927 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,950 psi | 78% | 2999 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 35,636 psi | 57% | 2776 fps | 96.7% |
| Alliant Reloder-17 | 67.8 gr | 80% | 40,292 psi | 65% | 2910 fps | 99.3% |
| Alliant Reloder-19 | <<locked>> | 94% | 48,878 psi | 78% | 3041 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 96% | 46,267 psi | 74% | 3031 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 84% | 29,631 psi | 48% | 2618 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 94% | 35,897 psi | 58% | 2805 fps | 95% |
| Alliant Reloder-26 | 74.7 gr | 86% | 34,301 psi | 55% | 2805 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 46,151 psi | 74% | 2936 fps | 99.9% |
| Bofors RP5 | <<locked>> | 96% | 46,267 psi | 74% | 3031 fps | 95.1% |
| Bofors RP7 | <<locked>> | 82% | 43,337 psi | 69% | 2851 fps | 95.3% |
| Hodgdon H380 | <<locked>> | 80% | 46,528 psi | 75% | 2943 fps | 98.7% |
| Hodgdon H414 | <<locked>> | 82% | 41,104 psi | 66% | 2877 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 84% | 47,079 psi | 75% | 2966 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,156 psi | 53% | 2664 fps | 97.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,792 psi | 81% | 3051 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 43,337 psi | 69% | 2953 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,093 psi | 43% | 1755 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,706 psi | 83% | 3022 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,732 psi | 77% | 2940 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,980 psi | 80% | 2963 fps | 97.6% |
| IMR 4350 | <<locked>> | 86% | 43,947 psi | 70% | 2884 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,032 psi | 67% | 2825 fps | 95.4% |
| IMR 4831 | <<locked>> | 80% | 35,172 psi | 56% | 2717 fps | 96.3% |
| IMR 4895 | <<locked>> | 80% | 50,241 psi | 81% | 3031 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 52,301 psi | 84% | 2982 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 47,892 psi | 77% | 2936 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,624 psi | 64% | 2772 fps | 96.3% |
| Lovex S070 | <<locked>> | 82% | 40,335 psi | 65% | 2805 fps | 95.3% |
| Lovex S071 | <<locked>> | 96% | 38,740 psi | 62% | 2795 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 52,272 psi | 84% | 3005 fps | 100% |
| Norma 202 | <<locked>> | 80% | 52,794 psi | 85% | 3005 fps | 100% |
| Norma 203B | <<locked>> | 80% | 48,356 psi | 78% | 2986 fps | 99.8% |
| Norma 204 | <<locked>> | 88% | 47,065 psi | 75% | 2982 fps | 95% |
| Norma MRP | <<locked>> | 92% | 42,453 psi | 68% | 2979 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 36,332 psi | 58% | 2762 fps | 96.5% |
| Ramshot Big Game | <<locked>> | 80% | 48,631 psi | 78% | 3005 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 82% | 37,768 psi | 61% | 2802 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,528 psi | 44% | 1798 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,630 psi | 75% | 2927 fps | 97.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 42,830 psi | 69% | 2976 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,245 psi | 58% | 2779 fps | 96.2% |
| ReloadSwiss RS 70 | 68.9 gr | 80% | 35,331 psi | 57% | 2779 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 80% | 49,806 psi | 80% | 2956 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,424 psi | 70% | 2877 fps | 99.6% |
| Rottweil R 905 | <<locked>> | 94% | 47,921 psi | 77% | 3022 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 82% | 43,337 psi | 69% | 2851 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,624 psi | 64% | 2772 fps | 96.3% |
| Shooters World Precision | <<locked>> | 80% | 47,892 psi | 77% | 2936 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 40,335 psi | 65% | 2805 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,512 psi | 71% | 2933 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,924 psi | 83% | 3028 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 53,055 psi | 85% | 2940 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,817 psi | 72% | 2795 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 41,321 psi | 66% | 2766 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 47,485 psi | 76% | 3015 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 52,837 psi | 85% | 2936 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,772 psi | 70% | 2877 fps | 99.6% |
| Somchem S365 | <<locked>> | 80% | 32,721 psi | 52% | 2710 fps | 98.5% |
| Somchem S385 | <<locked>> | 90% | 42,554 psi | 68% | 2877 fps | 95% |
| Vihtavuori N135 | <<locked>> | 80% | 49,995 psi | 80% | 2923 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 50,198 psi | 80% | 2933 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,800 psi | 67% | 2805 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 37,739 psi | 61% | 2762 fps | 96.9% |
| Vihtavuori N165 | <<locked>> | 96% | 44,831 psi | 72% | 2913 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 48,515 psi | 78% | 2923 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,275 psi | 60% | 2762 fps | 96.6% |
| Vihtavuori N555 | <<locked>> | 84% | 32,779 psi | 53% | 2703 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,999 psi | 59% | 2733 fps | 98.8% |
| Winchester 760 | <<locked>> | 82% | 41,292 psi | 66% | 2881 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 86% | 28,065 psi | 45% | 2644 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,967 psi | 83% | 3035 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 48,501 psi | 78% | 2989 fps | 95.6% |
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 99 powders for .300 Win. Mag. loaded with the .308 | 150gr | Sierra SPFN 30-30. Norma MRP delivers the highest muzzle velocity at 3,255 fps; across all powders the maximum-charge window runs from 1,962 fps to 3,255 fps. Accurate 3100 gives the best case fill at 100 %, and 99 of the 99 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. 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 70, Alliant Reloder-26, Alliant Reloder-17 rank at the top here: for .300 Win. Mag. with the .308 | 150gr | Sierra SPFN 30-30 they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, Baschieri & Pellagri 109, Hodgdon H1000 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.