Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 145gr | SUS-TAC HPT bullet and 93 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon Superformance 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% | 55,071 psi | 88% | 2995 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 54,143 psi | 87% | 3015 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 55,811 psi | 89% | 3087 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 52,997 psi | 85% | 3009 fps | 96.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 45,136 psi | 72% | 2956 fps | 96.5% |
| Accurate 4064 | <<locked>> | 88% | 54,476 psi | 87% | 3071 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 54,708 psi | 88% | 3159 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 84% | 54,317 psi | 87% | 3100 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 90% | 55,332 psi | 89% | 3097 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 82% | 53,127 psi | 85% | 3045 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 54,143 psi | 87% | 3022 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 54,012 psi | 87% | 3219 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 55,724 psi | 89% | 3123 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 56,144 psi | 90% | 3146 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 98% | 55,622 psi | 89% | 3222 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 92% | 53,069 psi | 85% | 3192 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 42,685 psi | 68% | 2986 fps | 99.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 48,327 psi | 77% | 3169 fps | 98.7% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 54,027 psi | 87% | 3107 fps | 99.5% |
| Bofors RP3 | <<locked>> | 88% | 52,866 psi | 85% | 3084 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 56,188 psi | 90% | 3107 fps | 97.3% |
| Hodgdon Benchmark | <<locked>> | 82% | 54,679 psi | 88% | 3028 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 56,420 psi | 90% | 3130 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 53,635 psi | 86% | 3094 fps | 99% |
| Hodgdon H414 | <<locked>> | 94% | 53,621 psi | 86% | 3146 fps | 97.5% |
| Hodgdon H4350 | <<locked>> | 92% | 54,085 psi | 87% | 3110 fps | 96.2% |
| Hodgdon H4895 | <<locked>> | 84% | 54,940 psi | 88% | 3110 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 55,521 psi | 89% | 3136 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 54,505 psi | 87% | 3140 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 54,070 psi | 87% | 3179 fps | 97.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,665 psi | 57% | 1942 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 55,970 psi | 90% | 3114 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 55,013 psi | 88% | 3097 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 54,839 psi | 88% | 3081 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 86% | 54,433 psi | 87% | 3054 fps | 97.5% |
| IMR 4350 | <<locked>> | 96% | 53,359 psi | 86% | 3077 fps | 96.8% |
| IMR 4451 Enduron | <<locked>> | 92% | 54,578 psi | 88% | 3081 fps | 97.4% |
| IMR 4831 | <<locked>> | 98% | 55,172 psi | 88% | 3146 fps | 99.6% |
| IMR 4895 | <<locked>> | 86% | 53,954 psi | 87% | 3120 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 82% | 53,127 psi | 85% | 3045 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 54,186 psi | 87% | 3071 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 53,621 psi | 86% | 3022 fps | 99.8% |
| Lovex S062 | <<locked>> | 88% | 54,694 psi | 88% | 3077 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 54,259 psi | 87% | 3077 fps | 98.6% |
| Lovex S070 | <<locked>> | 96% | 55,303 psi | 89% | 3117 fps | 97.9% |
| Norma 201 | <<locked>> | 86% | 56,318 psi | 90% | 3094 fps | 100% |
| Norma 202 | <<locked>> | 84% | 53,476 psi | 86% | 3041 fps | 100% |
| Norma 203B | <<locked>> | 88% | 55,332 psi | 89% | 3133 fps | 99.9% |
| Norma MRPᴾ | <<locked>> | 100% | 47,950 psi | 77% | 3117 fps | 96% |
| Norma URP | <<locked>> | 96% | 53,519 psi | 86% | 3140 fps | 99.3% |
| Ramshot Big Game | <<locked>> | 88% | 56,144 psi | 90% | 3156 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 98% | 56,043 psi | 90% | 3192 fps | 98.6% |
| Ramshot TAC | <<locked>> | 82% | 53,330 psi | 86% | 3058 fps | 98.6% |
| Ramshot Wild Boar | <<locked>> | 82% | 53,069 psi | 85% | 3077 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,230 psi | 58% | 1991 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 53,838 psi | 86% | 3074 fps | 97.9% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 53,142 psi | 85% | 3156 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 52,837 psi | 85% | 3196 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 54,317 psi | 87% | 3176 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 53,664 psi | 86% | 3202 fps | 99.1% |
| Rottweil R 901 | <<locked>> | 82% | 53,969 psi | 87% | 3025 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 53,679 psi | 86% | 3041 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 56,376 psi | 90% | 3133 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 56,188 psi | 90% | 3107 fps | 97.3% |
| Shooters World Long Rifle | <<locked>> | 94% | 54,259 psi | 87% | 3077 fps | 98.6% |
| Shooters World Match Rifle | <<locked>> | 84% | 54,186 psi | 87% | 3071 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 54,694 psi | 88% | 3077 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 55,303 psi | 89% | 3117 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 54,462 psi | 87% | 3136 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 55,448 psi | 89% | 3094 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 56,275 psi | 90% | 3120 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 54,230 psi | 87% | 2979 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 54,853 psi | 88% | 2979 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 54,230 psi | 87% | 3025 fps | 97.4% |
| Somchem S335 | <<locked>> | 84% | 53,737 psi | 86% | 2976 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 55,071 psi | 88% | 3084 fps | 99.9% |
| Somchem S355 | <<locked>> | 90% | 53,026 psi | 85% | 3071 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 55,492 psi | 89% | 3202 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 51,300 psi | 82% | 3068 fps | 96.3% |
| Vihtavuori N133 | <<locked>> | 84% | 54,549 psi | 87% | 2963 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 53,505 psi | 86% | 3005 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 54,056 psi | 87% | 3022 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 54,491 psi | 87% | 3051 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 55,985 psi | 90% | 3140 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 82% | 53,417 psi | 86% | 3041 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 55,927 psi | 90% | 3068 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 55,071 psi | 88% | 3143 fps | 99.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 47,456 psi | 76% | 3074 fps | 99.1% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 56,101 psi | 90% | 3110 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 53,679 psi | 86% | 3094 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 53,867 psi | 86% | 3153 fps | 97.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,392 psi | 62% | 2995 fps | 99.2% |
| Winchester StaBALL Match | <<locked>> | 86% | 56,420 psi | 90% | 3133 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% | 51,764 psi | 83% | 2943 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 44,483 psi | 71% | 2861 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 51,967 psi | 83% | 3028 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 49,472 psi | 79% | 2946 fps | 95.6% |
| Accurate 3100 | <<locked>> | 98% | 42,032 psi | 67% | 2894 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 42,047 psi | 67% | 2854 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 36,013 psi | 58% | 2782 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 47,732 psi | 77% | 2979 fps | 99.3% |
| ADI AR 2208 | <<locked>> | 80% | 40,611 psi | 65% | 2815 fps | 97.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,806 psi | 80% | 2989 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 80% | 50,691 psi | 81% | 2972 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,743 psi | 70% | 3015 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,567 psi | 65% | 2841 fps | 98.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 43,366 psi | 70% | 2910 fps | 98.3% |
| Alliant Reloder-16 | <<locked>> | 84% | 35,578 psi | 57% | 2789 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 35,172 psi | 56% | 2805 fps | 97.2% |
| Alliant Reloder-23 | <<locked>> | 90% | 31,096 psi | 50% | 2684 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 94% | 38,972 psi | 62% | 2956 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 47,282 psi | 76% | 2986 fps | 98.6% |
| Bofors RP3 | <<locked>> | 80% | 40,480 psi | 65% | 2848 fps | 98.9% |
| Bofors RP7 | <<locked>> | 88% | 46,586 psi | 75% | 2930 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 51,314 psi | 82% | 2976 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 49,095 psi | 79% | 3012 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 41,060 psi | 66% | 2848 fps | 96.6% |
| Hodgdon H414 | <<locked>> | 88% | 43,874 psi | 70% | 2959 fps | 95% |
| Hodgdon H4350 | <<locked>> | 90% | 50,662 psi | 81% | 3048 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 48,196 psi | 77% | 2992 fps | 99.6% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 30,777 psi | 49% | 2618 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 44,425 psi | 71% | 2959 fps | 99.5% |
| Hodgdon Superformance | 73.2 gr | 90% | 46,702 psi | 75% | 3038 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,629 psi | 43% | 1742 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 46,180 psi | 74% | 2940 fps | 99.4% |
| IMR 3031 | <<locked>> | 80% | 48,167 psi | 77% | 2986 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,612 psi | 68% | 2851 fps | 98.2% |
| IMR 4166 Enduron | <<locked>> | 80% | 45,092 psi | 72% | 2877 fps | 95.3% |
| IMR 4350 | <<locked>> | 92% | 47,123 psi | 76% | 2963 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 86% | 45,455 psi | 73% | 2910 fps | 95.3% |
| IMR 4831 | <<locked>> | 84% | 34,766 psi | 56% | 2733 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 44,440 psi | 71% | 2943 fps | 98.9% |
| IMR 8208 XBR | <<locked>> | 80% | 49,806 psi | 80% | 2989 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 47,384 psi | 76% | 2959 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,340 psi | 76% | 2910 fps | 99.3% |
| Lovex S062 | <<locked>> | 80% | 42,627 psi | 68% | 2858 fps | 99.4% |
| Lovex S065 | <<locked>> | 84% | 39,798 psi | 64% | 2792 fps | 95.2% |
| Lovex S070 | <<locked>> | 88% | 43,033 psi | 69% | 2881 fps | 95% |
| Norma 201 | <<locked>> | 80% | 46,673 psi | 75% | 2927 fps | 99.8% |
| Norma 202 | <<locked>> | 80% | 47,268 psi | 76% | 2940 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,772 psi | 69% | 2897 fps | 98.6% |
| Norma MRP | <<locked>> | 98% | 44,831 psi | 72% | 3051 fps | 95% |
| Norma URP | <<locked>> | 84% | 36,027 psi | 58% | 2779 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 42,540 psi | 68% | 2910 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 90% | 42,830 psi | 69% | 2943 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 49,850 psi | 80% | 2995 fps | 98% |
| Ramshot Wild Boar | <<locked>> | 80% | 49,545 psi | 79% | 3018 fps | 99.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,050 psi | 43% | 1781 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 44,164 psi | 71% | 2890 fps | 95.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 46,093 psi | 74% | 3025 fps | 98.7% |
| ReloadSwiss RS 60 | 61.6 gr | 80% | 37,405 psi | 60% | 2877 fps | 99.6% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 38,189 psi | 61% | 2854 fps | 95.9% |
| ReloadSwiss RS 70 | 68.8 gr | 88% | 40,625 psi | 65% | 2930 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 50,792 psi | 81% | 2972 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 44,498 psi | 71% | 2877 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 80% | 38,014 psi | 61% | 2785 fps | 98.1% |
| Rottweil R 907 | <<locked>> | 88% | 46,586 psi | 75% | 2930 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 84% | 39,798 psi | 64% | 2792 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 47,384 psi | 76% | 2959 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,627 psi | 68% | 2858 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 88% | 43,033 psi | 69% | 2881 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,928 psi | 62% | 2835 fps | 97.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 48,414 psi | 78% | 2972 fps | 98.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 46,209 psi | 74% | 2946 fps | 99.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,834 psi | 77% | 2877 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,030 psi | 64% | 2730 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 44,643 psi | 72% | 2848 fps | 95.2% |
| Somchem S335 | <<locked>> | 80% | 47,514 psi | 76% | 2874 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 48,124 psi | 77% | 2966 fps | 99.4% |
| Somchem S355 | <<locked>> | 80% | 38,580 psi | 62% | 2785 fps | 98.1% |
| Somchem S365 | <<locked>> | 80% | 28,268 psi | 45% | 2602 fps | 95.7% |
| Somchem S385 | <<locked>> | 98% | 47,979 psi | 77% | 3009 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 80% | 48,240 psi | 77% | 2867 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 44,150 psi | 71% | 2854 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,744 psi | 72% | 2864 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,854 psi | 59% | 2720 fps | 98.8% |
| Vihtavuori N160 | <<locked>> | 82% | 35,157 psi | 56% | 2723 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 50,183 psi | 80% | 2986 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 43,207 psi | 69% | 2851 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 37,057 psi | 59% | 2782 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 90% | 33,895 psi | 54% | 2769 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,619 psi | 52% | 2635 fps | 96.4% |
| Winchester 748 | <<locked>> | 80% | 50,227 psi | 81% | 3038 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 43,874 psi | 70% | 2959 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 94% | 31,386 psi | 50% | 2772 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,934 psi | 74% | 2949 fps | 99.4% |
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 112 powders for .300 Win. Mag. loaded with the .308 | 145gr | SUS-TAC HPT. Alliant Reloder-16 delivers the highest muzzle velocity at 3,222 fps; across all powders the maximum-charge window runs from 1,942 fps to 3,222 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 57–90 %, leaving at least 10 % headroom. The 145.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, 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, Hodgdon Superformance, ReloadSwiss RS 60 rank at the top here: for .300 Win. Mag. with the .308 | 145gr | SUS-TAC HPT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2213, Alliant Reloder-22, Alliant Reloder-25 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.