Load Specifications
Load data in caliber .300 Win. Mag. with .311 | 150gr | Norma Semi Soft Point 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 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.
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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>> | 84% | 55,434 psi | 89% | 2995 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 54,824 psi | 88% | 3009 fps | 97.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 50,343 psi | 81% | 3022 fps | 98.3% |
| Accurate 4064 | <<locked>> | 86% | 55,680 psi | 89% | 3051 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 56,246 psi | 90% | 3150 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 82% | 54,752 psi | 88% | 3077 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 56,072 psi | 90% | 3081 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 98% | 53,795 psi | 86% | 3120 fps | 96.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 55,042 psi | 88% | 3205 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 53,722 psi | 86% | 3117 fps | 96.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 53,113 psi | 85% | 3051 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 53,519 psi | 86% | 3071 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 94% | 53,330 psi | 86% | 3150 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 90% | 54,708 psi | 88% | 3182 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 52,953 psi | 85% | 3107 fps | 96.5% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 50,067 psi | 80% | 3100 fps | 95.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 47,210 psi | 76% | 3045 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,394 psi | 66% | 2940 fps | 96.9% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 54,259 psi | 87% | 3245 fps | 99.8% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 54,868 psi | 88% | 3091 fps | 99.8% |
| Bofors RP3 | <<locked>> | 86% | 54,041 psi | 87% | 3068 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 50,067 psi | 80% | 3100 fps | 95.9% |
| Bofors RP7 | <<locked>> | 90% | 53,490 psi | 86% | 3035 fps | 97.5% |
| Hodgdon H380 | <<locked>> | 86% | 54,520 psi | 87% | 3081 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 88% | 52,591 psi | 84% | 3100 fps | 97.9% |
| Hodgdon H4350 | <<locked>> | 92% | 53,171 psi | 85% | 3071 fps | 96.8% |
| Hodgdon H4895 | <<locked>> | 82% | 55,390 psi | 89% | 3084 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 53,737 psi | 86% | 3074 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 55,854 psi | 90% | 3127 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 55,158 psi | 88% | 3176 fps | 98.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,013 psi | 58% | 1939 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 55,680 psi | 89% | 3074 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 54,563 psi | 87% | 3048 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 54,868 psi | 88% | 3054 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 88% | 53,911 psi | 86% | 3025 fps | 98.1% |
| IMR 4350 | <<locked>> | 94% | 54,288 psi | 87% | 3068 fps | 97.7% |
| IMR 4451 Enduron | <<locked>> | 90% | 55,288 psi | 89% | 3071 fps | 98.2% |
| IMR 4831 | <<locked>> | 98% | 53,882 psi | 86% | 3094 fps | 99.7% |
| IMR 4895 | <<locked>> | 84% | 54,897 psi | 88% | 3104 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 55,216 psi | 89% | 3051 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 53,838 psi | 86% | 2999 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 55,564 psi | 89% | 3058 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 55,100 psi | 88% | 3064 fps | 99.2% |
| Lovex S070 | <<locked>> | 94% | 56,333 psi | 90% | 3107 fps | 98.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 41,771 psi | 67% | 2858 fps | 96.3% |
| Norma 201 | <<locked>> | 82% | 53,476 psi | 86% | 3015 fps | 100% |
| Norma 202 | <<locked>> | 82% | 54,259 psi | 87% | 3018 fps | 100% |
| Norma 203B | <<locked>> | 86% | 56,159 psi | 90% | 3114 fps | 100% |
| Norma 204 | <<locked>> | 94% | 55,056 psi | 88% | 3120 fps | 96.6% |
| Norma MRPᴾ | <<locked>> | 100% | 53,316 psi | 85% | 3192 fps | 98.1% |
| Norma URP | <<locked>> | 94% | 54,868 psi | 88% | 3130 fps | 99.7% |
| Ramshot Big Game | <<locked>> | 84% | 53,301 psi | 85% | 3077 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 53,751 psi | 86% | 3127 fps | 98.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 49,211 psi | 79% | 3051 fps | 96.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,782 psi | 59% | 1988 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 54,462 psi | 87% | 3058 fps | 98.6% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 54,157 psi | 87% | 3140 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 54,085 psi | 87% | 3176 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 56,086 psi | 90% | 3169 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 54,882 psi | 88% | 3199 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 84% | 54,186 psi | 87% | 3018 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 53,896 psi | 86% | 3061 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 55,738 psi | 89% | 3156 fps | 97.2% |
| Rottweil R 907 | <<locked>> | 90% | 53,490 psi | 86% | 3035 fps | 97.5% |
| Shooters World Long Rifle | <<locked>> | 92% | 55,100 psi | 88% | 3064 fps | 99.2% |
| Shooters World Match Rifle | <<locked>> | 82% | 55,216 psi | 89% | 3051 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 55,564 psi | 89% | 3058 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 56,333 psi | 90% | 3107 fps | 98.6% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 55,564 psi | 89% | 3120 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 56,188 psi | 90% | 3077 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 53,330 psi | 86% | 3045 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 54,592 psi | 88% | 2953 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 55,419 psi | 89% | 2953 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 54,969 psi | 88% | 3012 fps | 98.2% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 55,245 psi | 89% | 3150 fps | 97.1% |
| Somchem S335 | <<locked>> | 82% | 54,143 psi | 87% | 2946 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 55,840 psi | 90% | 3064 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 54,041 psi | 87% | 3058 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 53,925 psi | 86% | 3136 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 56,420 psi | 90% | 3130 fps | 98% |
| Unknown powder | <<locked>> | 92% | 55,753 psi | 89% | 3140 fps | 99.6% |
| Vihtavuori N133 | <<locked>> | 84% | 54,665 psi | 88% | 2936 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 54,302 psi | 87% | 2982 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 54,056 psi | 87% | 2989 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 55,535 psi | 89% | 3038 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 56,318 psi | 90% | 3110 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 84% | 53,824 psi | 86% | 3012 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 53,113 psi | 85% | 3100 fps | 99.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 52,895 psi | 85% | 3130 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 53,388 psi | 86% | 3041 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 52,591 psi | 84% | 3100 fps | 97.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 42,612 psi | 68% | 3084 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 55,100 psi | 88% | 3097 fps | 96.8% |
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% | 48,544 psi | 78% | 2894 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 44,904 psi | 72% | 2825 fps | 95.3% |
| Accurate 3100 | <<locked>> | 92% | 38,203 psi | 61% | 2779 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 45,934 psi | 74% | 2890 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,650 psi | 56% | 2713 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 51,517 psi | 83% | 3018 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 43,787 psi | 70% | 2858 fps | 98.8% |
| ADI AR 2209 | <<locked>> | 96% | 50,430 psi | 81% | 3061 fps | 95.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 47,761 psi | 77% | 3071 fps | 99.4% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 50,430 psi | 81% | 3058 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,019 psi | 71% | 2884 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,065 psi | 75% | 2956 fps | 99.4% |
| Alliant Reloder-16 | 60.5 gr | 80% | 34,185 psi | 55% | 2723 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,464 psi | 62% | 2861 fps | 98.8% |
| Alliant Reloder-19 | <<locked>> | 96% | 49,748 psi | 80% | 3048 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 98% | 46,963 psi | 75% | 3035 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 86% | 30,168 psi | 48% | 2628 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 98% | 38,725 psi | 62% | 2874 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 88% | 34,925 psi | 56% | 2818 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 51,184 psi | 82% | 3028 fps | 99.5% |
| Bofors RP3 | <<locked>> | 80% | 44,237 psi | 71% | 2894 fps | 99.7% |
| Bofors RP5 | <<locked>> | 98% | 46,963 psi | 75% | 3035 fps | 95% |
| Bofors RP7 | <<locked>> | 84% | 44,411 psi | 71% | 2864 fps | 95.3% |
| Hodgdon H380 | <<locked>> | 80% | 44,570 psi | 71% | 2897 fps | 98.1% |
| Hodgdon H414 | <<locked>> | 82% | 42,801 psi | 69% | 2907 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 88% | 47,007 psi | 75% | 2953 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 52,054 psi | 83% | 3031 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,676 psi | 51% | 2618 fps | 96.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,643 psi | 73% | 2949 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 86% | 44,425 psi | 71% | 2969 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,905 psi | 43% | 1736 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 46,180 psi | 74% | 2910 fps | 99.7% |
| IMR 3031 | <<locked>> | 80% | 48,022 psi | 77% | 2943 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,830 psi | 69% | 2828 fps | 98.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 42,235 psi | 68% | 2795 fps | 95.3% |
| IMR 4350 | <<locked>> | 88% | 44,991 psi | 72% | 2894 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 82% | 43,178 psi | 69% | 2838 fps | 95.5% |
| IMR 4831 | <<locked>> | 84% | 34,490 psi | 55% | 2694 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 48,269 psi | 77% | 2986 fps | 99.7% |
| Lovex D073.6 | <<locked>> | 80% | 51,634 psi | 83% | 2995 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,662 psi | 81% | 2946 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 46,122 psi | 74% | 2897 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 37,985 psi | 61% | 2723 fps | 95.4% |
| Lovex S070 | <<locked>> | 84% | 41,234 psi | 66% | 2815 fps | 95.2% |
| Lovex S071 | <<locked>> | 98% | 39,059 psi | 63% | 2799 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 50,299 psi | 81% | 2963 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,966 psi | 82% | 2966 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,456 psi | 74% | 2940 fps | 99.5% |
| Norma 204 | <<locked>> | 92% | 51,416 psi | 82% | 3058 fps | 95.8% |
| Norma MRP | <<locked>> | 94% | 43,163 psi | 69% | 2989 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 34,635 psi | 56% | 2713 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 46,470 psi | 75% | 2959 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 84% | 38,464 psi | 62% | 2812 fps | 95% |
| Ramshot Magnum | <<locked>> | 98% | 45,585 psi | 73% | 2979 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,340 psi | 44% | 1778 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,788 psi | 72% | 2877 fps | 96.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 50,531 psi | 81% | 3074 fps | 99.7% |
| ReloadSwiss RS 60 | 65.1 gr | 80% | 40,872 psi | 66% | 2930 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,258 psi | 55% | 2723 fps | 95.2% |
| ReloadSwiss RS 70 | 67.8 gr | 82% | 36,201 psi | 58% | 2795 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 80% | 47,863 psi | 77% | 2910 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,495 psi | 67% | 2831 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 96% | 48,718 psi | 78% | 3028 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 84% | 44,411 psi | 71% | 2864 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,985 psi | 61% | 2723 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 51,634 psi | 83% | 2995 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 46,122 psi | 74% | 2897 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 84% | 41,234 psi | 66% | 2815 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,583 psi | 68% | 2884 fps | 99% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 52,402 psi | 84% | 3015 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,980 psi | 80% | 2986 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,227 psi | 82% | 2900 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,120 psi | 69% | 2756 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 42,424 psi | 68% | 2779 fps | 95.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 48,254 psi | 77% | 3025 fps | 95.4% |
| Somchem S335 | <<locked>> | 80% | 50,937 psi | 82% | 2897 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 52,083 psi | 84% | 3005 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 41,945 psi | 67% | 2831 fps | 99.2% |
| Somchem S365 | <<locked>> | 80% | 31,111 psi | 50% | 2657 fps | 97.8% |
| Somchem S385 | <<locked>> | 92% | 43,424 psi | 70% | 2887 fps | 95% |
| Unknown powder | <<locked>> | 80% | 37,449 psi | 60% | 2776 fps | 95.9% |
| Vihtavuori N133 | <<locked>> | 80% | 48,385 psi | 78% | 2838 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,950 psi | 77% | 2884 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,703 psi | 76% | 2884 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,969 psi | 58% | 2671 fps | 99.1% |
| Vihtavuori N160 | <<locked>> | 80% | 37,536 psi | 60% | 2749 fps | 96.6% |
| Vihtavuori N540 | <<locked>> | 80% | 47,427 psi | 76% | 2907 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,014 psi | 61% | 2792 fps | 96.6% |
| Vihtavuori N555 | <<locked>> | 86% | 33,083 psi | 53% | 2710 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,433 psi | 57% | 2684 fps | 98.2% |
| Winchester 760 | <<locked>> | 82% | 42,801 psi | 69% | 2907 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 88% | 28,514 psi | 46% | 2651 fps | 95.3% |
| Winchester Supreme 780 | <<locked>> | 96% | 51,039 psi | 82% | 3028 fps | 95.9% |
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 93 powders for .300 Win. Mag. loaded with the .311 | 150gr | Norma Semi Soft Point. Alliant Reloder-26 delivers the highest muzzle velocity at 3,245 fps; across all powders the maximum-charge window runs from 1,939 fps to 3,245 fps. Accurate 3100 gives the best case fill at 100 %, and 93 of the 93 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 0.311" calls for a 1:17.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-22, Alliant Reloder-23 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 .311 | 150gr | Norma Semi Soft Point 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.