Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 150gr | Norma ECO Strike bullet and 94 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-17 and ReloadSwiss RS 60.
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 2015 | <<locked>> | 82% | 54,607 psi | 88% | 2946 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 53,534 psi | 86% | 2966 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 55,419 psi | 89% | 3038 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 56,391 psi | 90% | 3028 fps | 97.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 44,802 psi | 72% | 2910 fps | 96.8% |
| Accurate 4064 | <<locked>> | 88% | 53,780 psi | 86% | 3018 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 54,172 psi | 87% | 3107 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 84% | 54,070 psi | 87% | 3054 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 90% | 55,230 psi | 89% | 3054 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 82% | 52,881 psi | 85% | 2999 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 54,114 psi | 87% | 2976 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 53,998 psi | 87% | 3176 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 55,506 psi | 89% | 3077 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 55,956 psi | 90% | 3100 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 98% | 55,419 psi | 89% | 3173 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 92% | 53,098 psi | 85% | 3150 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 42,467 psi | 68% | 2943 fps | 99.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 48,124 psi | 77% | 3127 fps | 98.9% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 53,911 psi | 86% | 3064 fps | 99.6% |
| Bofors RP3 | <<locked>> | 90% | 56,202 psi | 90% | 3094 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 56,014 psi | 90% | 3064 fps | 97.5% |
| Hodgdon Benchmark | <<locked>> | 82% | 54,462 psi | 87% | 2982 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 56,217 psi | 90% | 3084 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 53,374 psi | 86% | 3048 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 94% | 53,592 psi | 86% | 3107 fps | 97.8% |
| Hodgdon H4350 | <<locked>> | 92% | 54,027 psi | 87% | 3071 fps | 96.5% |
| Hodgdon H4895 | <<locked>> | 84% | 54,650 psi | 88% | 3064 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 55,550 psi | 89% | 3094 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 54,418 psi | 87% | 3097 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 53,940 psi | 86% | 3140 fps | 97.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,650 psi | 57% | 1913 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 55,796 psi | 89% | 3064 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 54,781 psi | 88% | 3045 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 54,621 psi | 88% | 3035 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 86% | 54,505 psi | 87% | 3015 fps | 97.8% |
| IMR 4350 | <<locked>> | 96% | 53,316 psi | 85% | 3038 fps | 97.1% |
| IMR 4451 Enduron | <<locked>> | 92% | 54,505 psi | 87% | 3041 fps | 97.7% |
| IMR 4831 | <<locked>> | 98% | 54,868 psi | 88% | 3100 fps | 99.7% |
| IMR 4895 | <<locked>> | 86% | 53,708 psi | 86% | 3074 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 82% | 52,881 psi | 85% | 2999 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 54,027 psi | 87% | 3028 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 53,388 psi | 86% | 2979 fps | 99.9% |
| Lovex S062 | <<locked>> | 88% | 54,621 psi | 88% | 3035 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 53,998 psi | 87% | 3035 fps | 98.8% |
| Lovex S070 | <<locked>> | 96% | 55,100 psi | 88% | 3071 fps | 98.1% |
| Norma 201 | <<locked>> | 86% | 56,115 psi | 90% | 3048 fps | 100% |
| Norma 202 | <<locked>> | 84% | 53,388 psi | 86% | 2999 fps | 100% |
| Norma 203B | <<locked>> | 88% | 55,143 psi | 88% | 3084 fps | 100% |
| Norma 204 | <<locked>> | 96% | 53,795 psi | 86% | 3084 fps | 95.9% |
| Norma MRPᴾ | <<locked>> | 100% | 47,688 psi | 76% | 3077 fps | 96.4% |
| Norma URP | <<locked>> | 96% | 53,461 psi | 86% | 3097 fps | 99.5% |
| Ramshot Big Game | <<locked>> | 88% | 56,101 psi | 90% | 3114 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 55,869 psi | 90% | 3150 fps | 98.8% |
| Ramshot TAC | <<locked>> | 82% | 53,127 psi | 85% | 3015 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 82% | 52,866 psi | 85% | 3035 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,172 psi | 58% | 1959 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 53,679 psi | 86% | 3031 fps | 98.2% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 52,982 psi | 85% | 3110 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 52,837 psi | 85% | 3150 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 54,302 psi | 87% | 3133 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 53,519 psi | 86% | 3163 fps | 99.3% |
| Rottweil R 901 | <<locked>> | 82% | 53,301 psi | 85% | 2972 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 53,214 psi | 85% | 2995 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 56,057 psi | 90% | 3084 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 56,014 psi | 90% | 3064 fps | 97.5% |
| Shooters World Long Rifle | <<locked>> | 94% | 53,998 psi | 87% | 3035 fps | 98.8% |
| Shooters World Match Rifle | <<locked>> | 84% | 54,027 psi | 87% | 3028 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 54,621 psi | 88% | 3035 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 55,100 psi | 88% | 3071 fps | 98.1% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 54,389 psi | 87% | 3094 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 55,419 psi | 89% | 3054 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 56,144 psi | 90% | 3077 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 54,157 psi | 87% | 2936 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 54,650 psi | 88% | 2933 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 54,056 psi | 87% | 2982 fps | 97.7% |
| Somchem S335 | <<locked>> | 84% | 53,606 psi | 86% | 2930 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 54,926 psi | 88% | 3041 fps | 99.9% |
| Somchem S355 | <<locked>> | 92% | 56,333 psi | 90% | 3084 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 55,608 psi | 89% | 3159 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 51,213 psi | 82% | 3031 fps | 96.6% |
| Vihtavuori N133 | <<locked>> | 84% | 54,549 psi | 87% | 2920 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 53,171 psi | 85% | 2959 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 54,056 psi | 87% | 2979 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 54,259 psi | 87% | 3009 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 55,782 psi | 89% | 3094 fps | 99.6% |
| Vihtavuori N530 | <<locked>> | 82% | 53,403 psi | 86% | 2999 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 55,695 psi | 89% | 3022 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 54,955 psi | 88% | 3097 fps | 99.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 47,007 psi | 75% | 3025 fps | 99.2% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 56,217 psi | 90% | 3071 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 53,534 psi | 86% | 3048 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 53,592 psi | 86% | 3107 fps | 97.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,942 psi | 61% | 2953 fps | 99.4% |
| Winchester StaBALL Match | <<locked>> | 86% | 56,304 psi | 90% | 3087 fps | 100% |
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% | 51,213 psi | 82% | 2894 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 43,729 psi | 70% | 2808 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 51,532 psi | 83% | 2979 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 46,035 psi | 74% | 2844 fps | 95.1% |
| Accurate 3100 | <<locked>> | 98% | 41,626 psi | 67% | 2848 fps | 95.9% |
| Accurate 4064 | <<locked>> | 80% | 41,379 psi | 66% | 2802 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 35,389 psi | 57% | 2733 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 47,543 psi | 76% | 2936 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 80% | 40,408 psi | 65% | 2772 fps | 97.8% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,719 psi | 80% | 2943 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 50,633 psi | 81% | 2927 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,729 psi | 70% | 2976 fps | 98.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,118 psi | 64% | 2795 fps | 99% |
| Alliant Reloder-15 | <<locked>> | 80% | 43,149 psi | 69% | 2864 fps | 98.5% |
| Alliant Reloder-16 | <<locked>> | 84% | 35,375 psi | 57% | 2749 fps | 95.8% |
| Alliant Reloder-17 | 61.2 gr | 80% | 34,751 psi | 56% | 2759 fps | 97.4% |
| Alliant Reloder-23 | <<locked>> | 90% | 30,618 psi | 49% | 2638 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 92% | 35,897 psi | 58% | 2841 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 47,050 psi | 75% | 2943 fps | 98.8% |
| Bofors RP3 | <<locked>> | 80% | 39,871 psi | 64% | 2799 fps | 99% |
| Bofors RP7 | <<locked>> | 88% | 46,253 psi | 74% | 2887 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 51,227 psi | 82% | 2930 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 48,965 psi | 79% | 2966 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 40,582 psi | 65% | 2802 fps | 96.8% |
| Hodgdon H414 | <<locked>> | 88% | 43,642 psi | 70% | 2917 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 90% | 50,560 psi | 81% | 3005 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 48,051 psi | 77% | 2949 fps | 99.7% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 30,443 psi | 49% | 2579 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 44,353 psi | 71% | 2920 fps | 99.6% |
| Hodgdon Superformance | <<locked>> | 90% | 46,572 psi | 75% | 3002 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,527 psi | 43% | 1709 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 46,093 psi | 74% | 2897 fps | 99.6% |
| IMR 3031 | <<locked>> | 80% | 48,008 psi | 77% | 2940 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,453 psi | 68% | 2812 fps | 98.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,759 psi | 72% | 2835 fps | 95.6% |
| IMR 4350 | <<locked>> | 92% | 46,949 psi | 75% | 2923 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 86% | 45,194 psi | 72% | 2867 fps | 95.6% |
| IMR 4831 | <<locked>> | 84% | 34,272 psi | 55% | 2687 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 44,251 psi | 71% | 2900 fps | 99.1% |
| IMR 8208 XBR | <<locked>> | 80% | 49,719 psi | 80% | 2943 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 46,847 psi | 75% | 2910 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,224 psi | 76% | 2867 fps | 99.5% |
| Lovex S062 | <<locked>> | 80% | 42,293 psi | 68% | 2812 fps | 99.5% |
| Lovex S065 | <<locked>> | 84% | 39,479 psi | 63% | 2749 fps | 95.5% |
| Lovex S070 | <<locked>> | 88% | 42,569 psi | 68% | 2838 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 46,311 psi | 74% | 2881 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 46,847 psi | 75% | 2887 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,482 psi | 68% | 2851 fps | 98.8% |
| Norma 204 | <<locked>> | 94% | 50,227 psi | 81% | 3022 fps | 95% |
| Norma MRP | <<locked>> | 98% | 44,483 psi | 71% | 3009 fps | 95.4% |
| Norma URP | <<locked>> | 84% | 35,636 psi | 57% | 2736 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 42,409 psi | 68% | 2871 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 88% | 39,827 psi | 64% | 2841 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 49,588 psi | 80% | 2949 fps | 98.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 49,501 psi | 79% | 2976 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,731 psi | 43% | 1749 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 41,017 psi | 66% | 2785 fps | 95.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 46,021 psi | 74% | 2986 fps | 99% |
| ReloadSwiss RS 60 | 61.2 gr | 80% | 37,043 psi | 59% | 2835 fps | 99.7% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 35,230 psi | 56% | 2746 fps | 95.2% |
| ReloadSwiss RS 70 | 66.8 gr | 86% | 37,594 psi | 60% | 2822 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 50,314 psi | 81% | 2923 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 44,077 psi | 71% | 2831 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 80% | 37,362 psi | 60% | 2733 fps | 98.3% |
| Rottweil R 907 | <<locked>> | 88% | 46,253 psi | 74% | 2887 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 84% | 39,479 psi | 63% | 2749 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 46,847 psi | 75% | 2910 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,293 psi | 68% | 2812 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 88% | 42,569 psi | 68% | 2838 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,725 psi | 62% | 2795 fps | 97.9% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 48,022 psi | 77% | 2927 fps | 98.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 46,137 psi | 74% | 2904 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,630 psi | 76% | 2831 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,798 psi | 64% | 2687 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 44,237 psi | 71% | 2805 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 47,239 psi | 76% | 2831 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 47,877 psi | 77% | 2923 fps | 99.5% |
| Somchem S355 | <<locked>> | 80% | 38,189 psi | 61% | 2743 fps | 98.3% |
| Somchem S365 | <<locked>> | 80% | 27,818 psi | 45% | 2556 fps | 95.9% |
| Somchem S385 | <<locked>> | 98% | 47,834 psi | 77% | 2969 fps | 95.8% |
| Vihtavuori N133 | <<locked>> | 80% | 48,095 psi | 77% | 2825 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,859 psi | 70% | 2808 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,367 psi | 71% | 2818 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,347 psi | 58% | 2674 fps | 98.9% |
| Vihtavuori N160 | <<locked>> | 82% | 34,722 psi | 56% | 2677 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 49,879 psi | 80% | 2943 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 42,772 psi | 69% | 2805 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 36,637 psi | 59% | 2736 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 90% | 33,417 psi | 54% | 2723 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,213 psi | 52% | 2592 fps | 96.7% |
| Winchester 748 | <<locked>> | 80% | 50,024 psi | 80% | 2989 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 43,642 psi | 70% | 2917 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 94% | 30,951 psi | 50% | 2730 fps | 96.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,643 psi | 73% | 2907 fps | 99.6% |
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 94 powders for .300 Win. Mag. loaded with the .308 | 150gr | Norma ECO Strike. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,176 fps; across all powders the maximum-charge window runs from 1,913 fps to 3,176 fps. Accurate 3100 gives the best case fill at 100 %, and 94 of the 94 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, Alliant Reloder-26 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-17, ReloadSwiss RS 60 rank at the top here: for .300 Win. Mag. with the .308 | 150gr | Norma ECO Strike 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.