Load Specifications
Load data in caliber .300 Win. Mag. with .307 | 150gr | Rhino Solid Shank 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.
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>> | 84% | 55,332 psi | 89% | 2995 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 53,490 psi | 86% | 2999 fps | 97.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 50,488 psi | 81% | 3025 fps | 98.3% |
| Accurate 4064 | <<locked>> | 86% | 55,593 psi | 89% | 3051 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 56,333 psi | 90% | 3150 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 82% | 54,911 psi | 88% | 3077 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 55,970 psi | 90% | 3081 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 98% | 53,925 psi | 86% | 3127 fps | 96.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 55,172 psi | 88% | 3205 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 53,824 psi | 86% | 3120 fps | 96.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 53,243 psi | 85% | 3051 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 53,417 psi | 86% | 3071 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 94% | 53,476 psi | 86% | 3153 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 90% | 54,636 psi | 88% | 3182 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 53,055 psi | 85% | 3110 fps | 96.5% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 50,125 psi | 80% | 3100 fps | 96% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 47,311 psi | 76% | 3048 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,481 psi | 67% | 2943 fps | 97% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 54,317 psi | 87% | 3248 fps | 99.8% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 54,737 psi | 88% | 3091 fps | 99.8% |
| Bofors RP3 | <<locked>> | 86% | 53,911 psi | 86% | 3064 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 50,125 psi | 80% | 3100 fps | 96% |
| Bofors RP7 | <<locked>> | 90% | 53,606 psi | 86% | 3041 fps | 97.5% |
| Hodgdon H380 | <<locked>> | 86% | 54,650 psi | 88% | 3084 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 92% | 54,955 psi | 88% | 3143 fps | 98.3% |
| Hodgdon H4350 | <<locked>> | 90% | 55,071 psi | 88% | 3100 fps | 97.2% |
| Hodgdon H4895 | <<locked>> | 82% | 55,506 psi | 89% | 3091 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 53,592 psi | 86% | 3074 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 55,782 psi | 89% | 3127 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 55,288 psi | 89% | 3176 fps | 98.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,158 psi | 58% | 1946 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 53,156 psi | 85% | 3035 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 55,912 psi | 90% | 3068 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 55,419 psi | 89% | 3061 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 54,926 psi | 88% | 3041 fps | 98.2% |
| IMR 4350 | <<locked>> | 94% | 54,360 psi | 87% | 3071 fps | 97.7% |
| IMR 4451 Enduron | <<locked>> | 90% | 55,361 psi | 89% | 3074 fps | 98.2% |
| IMR 4831 | <<locked>> | 94% | 53,084 psi | 85% | 3081 fps | 99.7% |
| IMR 4895 | <<locked>> | 84% | 54,824 psi | 88% | 3104 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 55,143 psi | 88% | 3051 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 53,940 psi | 86% | 3002 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 55,695 psi | 89% | 3058 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 55,216 psi | 89% | 3068 fps | 99.2% |
| Lovex S070 | <<locked>> | 92% | 53,098 psi | 85% | 3051 fps | 98.1% |
| Lovex S071ᴾ | <<locked>> | 100% | 41,872 psi | 67% | 2861 fps | 96.4% |
| Norma 201 | <<locked>> | 82% | 53,621 psi | 86% | 3018 fps | 100% |
| Norma 202 | <<locked>> | 82% | 54,389 psi | 87% | 3022 fps | 100% |
| Norma 203B | <<locked>> | 86% | 56,318 psi | 90% | 3117 fps | 100% |
| Norma 204 | <<locked>> | 94% | 55,158 psi | 88% | 3123 fps | 96.7% |
| Norma MRPᴾ | <<locked>> | 100% | 53,403 psi | 86% | 3196 fps | 98.1% |
| Norma URP | <<locked>> | 94% | 54,998 psi | 88% | 3133 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 84% | 53,447 psi | 86% | 3081 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 53,882 psi | 86% | 3127 fps | 98.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,738 psi | 59% | 1988 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 54,578 psi | 88% | 3061 fps | 98.6% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 54,302 psi | 87% | 3143 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 54,230 psi | 87% | 3179 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 56,246 psi | 90% | 3169 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 55,013 psi | 88% | 3202 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 84% | 54,288 psi | 87% | 3022 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 53,998 psi | 87% | 3061 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 55,854 psi | 90% | 3156 fps | 97.2% |
| Rottweil R 907 | <<locked>> | 90% | 53,606 psi | 86% | 3041 fps | 97.5% |
| Shooters World Long Rifle | <<locked>> | 92% | 55,216 psi | 89% | 3068 fps | 99.2% |
| Shooters World Match Rifle | <<locked>> | 82% | 55,143 psi | 88% | 3051 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 55,695 psi | 89% | 3058 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 53,098 psi | 85% | 3051 fps | 98.1% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 55,709 psi | 89% | 3127 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 56,115 psi | 90% | 3077 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 53,447 psi | 86% | 3045 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 54,505 psi | 87% | 2953 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 55,303 psi | 89% | 2953 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 55,129 psi | 88% | 3018 fps | 98.3% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 55,347 psi | 89% | 3150 fps | 97.1% |
| Somchem S335 | <<locked>> | 82% | 54,244 psi | 87% | 2949 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 55,753 psi | 89% | 3064 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 54,172 psi | 87% | 3061 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 54,085 psi | 87% | 3136 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 52,866 psi | 85% | 3071 fps | 97.4% |
| Vihtavuori N133 | <<locked>> | 82% | 54,940 psi | 88% | 2936 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 54,447 psi | 87% | 2982 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 54,781 psi | 88% | 2995 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 55,332 psi | 89% | 3031 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 53,809 psi | 86% | 3074 fps | 99.6% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 48,805 psi | 78% | 2982 fps | 96.1% |
| Vihtavuori N540 | <<locked>> | 84% | 53,214 psi | 85% | 2992 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 56,420 psi | 90% | 3133 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 53,040 psi | 85% | 3133 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 53,519 psi | 86% | 3041 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 55,187 psi | 88% | 3146 fps | 98.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 42,656 psi | 68% | 3084 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 53,490 psi | 86% | 3054 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 53,026 psi | 85% | 3061 fps | 96.3% |
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% | 48,675 psi | 78% | 2894 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,731 psi | 75% | 2871 fps | 95.7% |
| Accurate 3100 | <<locked>> | 92% | 38,276 psi | 61% | 2779 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 46,050 psi | 74% | 2894 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,577 psi | 55% | 2713 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 51,401 psi | 82% | 3018 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 43,714 psi | 70% | 2854 fps | 98.8% |
| ADI AR 2209 | <<locked>> | 96% | 50,560 psi | 81% | 3061 fps | 95.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 47,906 psi | 77% | 3074 fps | 99.4% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 50,560 psi | 81% | 3061 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,961 psi | 70% | 2881 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,992 psi | 75% | 2953 fps | 99.3% |
| Alliant Reloder-16 | 60.5 gr | 80% | 34,142 psi | 55% | 2726 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,537 psi | 62% | 2864 fps | 98.8% |
| Alliant Reloder-19 | <<locked>> | 96% | 49,879 psi | 80% | 3051 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 98% | 46,818 psi | 75% | 3035 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 86% | 30,110 psi | 48% | 2628 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 98% | 38,827 psi | 62% | 2877 fps | 96% |
| Alliant Reloder-26 | <<locked>> | 88% | 35,041 psi | 56% | 2822 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 51,329 psi | 82% | 3031 fps | 99.6% |
| Bofors RP3 | <<locked>> | 80% | 44,164 psi | 71% | 2890 fps | 99.7% |
| Bofors RP5 | <<locked>> | 98% | 46,818 psi | 75% | 3035 fps | 95% |
| Bofors RP7 | <<locked>> | 84% | 44,353 psi | 71% | 2861 fps | 95.3% |
| Hodgdon H380 | <<locked>> | 80% | 44,672 psi | 72% | 2897 fps | 98.1% |
| Hodgdon H414 | <<locked>> | 84% | 41,989 psi | 67% | 2887 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 86% | 48,283 psi | 77% | 2976 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 51,996 psi | 83% | 3028 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,633 psi | 51% | 2618 fps | 96.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 48,559 psi | 78% | 3005 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 44,541 psi | 71% | 2972 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,861 psi | 43% | 1736 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,734 psi | 80% | 2976 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 52,388 psi | 84% | 3015 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,963 psi | 74% | 2894 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,225 psi | 77% | 2920 fps | 97% |
| IMR 4350 | <<locked>> | 88% | 45,063 psi | 72% | 2894 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 82% | 43,120 psi | 69% | 2838 fps | 95.5% |
| IMR 4831 | <<locked>> | 80% | 33,417 psi | 54% | 2664 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 48,196 psi | 77% | 2986 fps | 99.7% |
| Lovex D073.6 | <<locked>> | 80% | 51,532 psi | 83% | 2995 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,749 psi | 81% | 2946 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 46,253 psi | 74% | 2900 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 38,072 psi | 61% | 2726 fps | 95.5% |
| Lovex S070 | <<locked>> | 84% | 41,147 psi | 66% | 2815 fps | 95.2% |
| Lovex S071 | <<locked>> | 98% | 39,160 psi | 63% | 2799 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 50,415 psi | 81% | 2966 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,879 psi | 82% | 2966 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,369 psi | 74% | 2940 fps | 99.6% |
| Norma 204 | <<locked>> | 92% | 51,547 psi | 83% | 3058 fps | 95.9% |
| Norma MRP | <<locked>> | 94% | 43,221 psi | 69% | 2992 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 34,722 psi | 56% | 2713 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 46,586 psi | 75% | 2959 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 84% | 38,580 psi | 62% | 2818 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,311 psi | 44% | 1778 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,730 psi | 72% | 2877 fps | 96.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 50,705 psi | 81% | 3077 fps | 99.7% |
| ReloadSwiss RS 60 | 65.2 gr | 80% | 41,002 psi | 66% | 2933 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,345 psi | 55% | 2726 fps | 95.2% |
| ReloadSwiss RS 70 | 67.8 gr | 82% | 36,114 psi | 58% | 2792 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 80% | 47,964 psi | 77% | 2913 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,626 psi | 67% | 2835 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 96% | 48,791 psi | 78% | 3031 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 84% | 44,353 psi | 71% | 2861 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,072 psi | 61% | 2726 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 51,532 psi | 83% | 2995 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 46,253 psi | 74% | 2900 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 84% | 41,147 psi | 66% | 2815 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,685 psi | 68% | 2887 fps | 99% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 52,518 psi | 84% | 3018 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,082 psi | 80% | 2989 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,343 psi | 82% | 2904 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,250 psi | 69% | 2759 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 42,496 psi | 68% | 2782 fps | 95.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 48,341 psi | 78% | 3025 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 51,097 psi | 82% | 2904 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 52,228 psi | 84% | 3009 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 42,032 psi | 67% | 2835 fps | 99.2% |
| Somchem S365 | <<locked>> | 80% | 31,169 psi | 50% | 2661 fps | 97.8% |
| Somchem S385 | <<locked>> | 92% | 43,352 psi | 70% | 2887 fps | 95% |
| Vihtavuori N133 | <<locked>> | 80% | 51,837 psi | 83% | 2890 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 48,095 psi | 77% | 2887 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,399 psi | 78% | 2894 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,132 psi | 64% | 2762 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 35,969 psi | 58% | 2713 fps | 96.1% |
| Vihtavuori N165 | <<locked>> | 98% | 45,585 psi | 73% | 2920 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 46,746 psi | 75% | 2884 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,607 psi | 57% | 2717 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 86% | 33,170 psi | 53% | 2713 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,520 psi | 57% | 2687 fps | 98.2% |
| Winchester 760 | <<locked>> | 84% | 42,177 psi | 68% | 2894 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 88% | 28,572 psi | 46% | 2654 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 49,922 psi | 80% | 2992 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 49,617 psi | 80% | 2999 fps | 95.5% |
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 .307 | 150gr | Rhino Solid Shank. Alliant Reloder-26 delivers the highest muzzle velocity at 3,248 fps; across all powders the maximum-charge window runs from 1,946 fps to 3,248 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 0.307" calls for a 1:16.5 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 .307 | 150gr | Rhino Solid Shank 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.