Load Specifications
Load data in caliber .300 Win. Mag. with .307 | 165gr | Rhino Solid Shank bullet and 89 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.
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>> | 82% | 54,346 psi | 87% | 2844 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 55,535 psi | 89% | 2907 fps | 98.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 53,301 psi | 85% | 2946 fps | 99.3% |
| Accurate 4064 | <<locked>> | 84% | 54,781 psi | 88% | 2900 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 55,376 psi | 89% | 3002 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 54,955 psi | 88% | 2930 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 52,968 psi | 85% | 2986 fps | 97.3% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 54,099 psi | 87% | 3031 fps | 96.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 53,954 psi | 87% | 3048 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 53,026 psi | 85% | 2982 fps | 97.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 55,564 psi | 89% | 2953 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 55,941 psi | 90% | 2976 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 56,130 psi | 90% | 3061 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 53,795 psi | 86% | 3031 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 55,767 psi | 89% | 3028 fps | 97.9% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 52,910 psi | 85% | 3028 fps | 97.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 49,835 psi | 80% | 2963 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,613 psi | 70% | 2881 fps | 98.5% |
| Alliant Reloder-26 | <<locked>> | 98% | 53,417 psi | 86% | 3100 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 48,602 psi | 78% | 2949 fps | 96.4% |
| Bofors RP3 | <<locked>> | 84% | 53,026 psi | 85% | 2917 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 52,910 psi | 85% | 3028 fps | 97.5% |
| Bofors RP7 | <<locked>> | 90% | 55,999 psi | 90% | 2953 fps | 98.6% |
| Hodgdon H380 | <<locked>> | 84% | 53,432 psi | 86% | 2930 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 90% | 54,056 psi | 87% | 2995 fps | 98.8% |
| Hodgdon H4350 | <<locked>> | 88% | 53,838 psi | 86% | 2956 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 52,866 psi | 85% | 2927 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 54,418 psi | 87% | 2969 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 54,041 psi | 87% | 3031 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,332 psi | 58% | 1850 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 55,361 psi | 89% | 2936 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 54,302 psi | 87% | 2910 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 53,563 psi | 86% | 2890 fps | 98.7% |
| IMR 4350 | <<locked>> | 92% | 53,243 psi | 85% | 2927 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 88% | 54,114 psi | 87% | 2923 fps | 98.7% |
| IMR 4831 | <<locked>> | 94% | 55,898 psi | 90% | 2992 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 53,882 psi | 86% | 2949 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 56,014 psi | 90% | 2969 fps | 96.1% |
| Lovex S060 | <<locked>> | 82% | 55,912 psi | 90% | 2897 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 54,462 psi | 87% | 2904 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 54,099 psi | 87% | 2920 fps | 99.5% |
| Lovex S070 | <<locked>> | 92% | 55,521 psi | 89% | 2966 fps | 99.1% |
| Lovex S071ᴾ | <<locked>> | 100% | 44,266 psi | 71% | 2789 fps | 97.9% |
| Norma 201 | <<locked>> | 82% | 55,811 psi | 89% | 2917 fps | 100% |
| Norma 202 | <<locked>> | 82% | 56,434 psi | 90% | 2913 fps | 100% |
| Norma 203B | <<locked>> | 84% | 55,201 psi | 89% | 2963 fps | 100% |
| Norma 204 | <<locked>> | 92% | 54,027 psi | 87% | 2979 fps | 97.3% |
| Norma MRPᴾ | <<locked>> | 100% | 56,391 psi | 90% | 3120 fps | 99.2% |
| Norma URP | <<locked>> | 92% | 54,186 psi | 87% | 2989 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 84% | 55,898 psi | 90% | 2986 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 51,793 psi | 83% | 3012 fps | 96.1% |
| Ramshot Hunter | <<locked>> | 92% | 52,939 psi | 85% | 2982 fps | 99.2% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 46,267 psi | 74% | 2884 fps | 96.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,014 psi | 59% | 1893 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 53,229 psi | 85% | 2910 fps | 99% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 53,258 psi | 85% | 3025 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 55,390 psi | 89% | 3028 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 53,882 psi | 86% | 3051 fps | 99.9% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 42,467 psi | 68% | 2887 fps | 96.3% |
| Rottweil R 902 | <<locked>> | 82% | 53,069 psi | 85% | 2867 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 53,098 psi | 85% | 2913 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 54,549 psi | 87% | 2953 fps | 96.4% |
| Rottweil R 905 | <<locked>> | 98% | 54,911 psi | 88% | 3012 fps | 97.8% |
| Rottweil R 907 | <<locked>> | 90% | 55,999 psi | 90% | 2953 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 90% | 54,099 psi | 87% | 2920 fps | 99.5% |
| Shooters World Precision | <<locked>> | 84% | 54,462 psi | 87% | 2904 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 55,521 psi | 89% | 2966 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 54,520 psi | 87% | 2972 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 55,651 psi | 89% | 2946 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 54,027 psi | 87% | 2802 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 53,940 psi | 86% | 2874 fps | 98.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 54,418 psi | 87% | 3009 fps | 97.8% |
| Somchem S335 | <<locked>> | 82% | 56,304 psi | 90% | 2844 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 56,362 psi | 90% | 2959 fps | 100% |
| Somchem S365 | <<locked>> | 94% | 53,403 psi | 86% | 2992 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 55,695 psi | 89% | 2992 fps | 98.6% |
| Vihtavuori N135 | <<locked>> | 82% | 53,447 psi | 86% | 2828 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 53,722 psi | 86% | 2844 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 54,360 psi | 87% | 2884 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 56,246 psi | 90% | 2979 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 51,358 psi | 82% | 2907 fps | 97.6% |
| Vihtavuori N540 | <<locked>> | 84% | 55,463 psi | 89% | 2890 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 55,303 psi | 89% | 2986 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 55,941 psi | 90% | 3045 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 55,956 psi | 90% | 2946 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 54,259 psi | 87% | 2999 fps | 98.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 45,049 psi | 72% | 3015 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 55,695 psi | 89% | 2953 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 55,840 psi | 90% | 2986 fps | 97.8% |
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% | 50,908 psi | 82% | 2792 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,820 psi | 78% | 2792 fps | 97.2% |
| Accurate 3100 | <<locked>> | 88% | 35,346 psi | 57% | 2598 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 48,211 psi | 77% | 2799 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,608 psi | 59% | 2644 fps | 97.4% |
| ADI AR 2208 | <<locked>> | 80% | 45,643 psi | 73% | 2769 fps | 99.5% |
| ADI AR 2209 | <<locked>> | 92% | 46,296 psi | 74% | 2861 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 98% | 50,662 psi | 81% | 2969 fps | 95.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,299 psi | 81% | 2986 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 46,398 psi | 74% | 2861 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,122 psi | 74% | 2795 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,066 psi | 79% | 2864 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 35,868 psi | 58% | 2657 fps | 97.5% |
| Alliant Reloder-17 | 63.5 gr | 80% | 40,553 psi | 65% | 2789 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 92% | 45,832 psi | 73% | 2851 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 94% | 43,279 psi | 69% | 2844 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 82% | 27,992 psi | 45% | 2457 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 94% | 36,042 psi | 58% | 2697 fps | 96% |
| Alliant Reloder-26 | 68.3 gr | 84% | 32,068 psi | 51% | 2631 fps | 95.1% |
| Bofors RP15 | <<locked>> | 98% | 45,527 psi | 73% | 2887 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 46,311 psi | 74% | 2805 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 43,279 psi | 69% | 2844 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 40,814 psi | 65% | 2667 fps | 95.3% |
| Hodgdon H380 | <<locked>> | 80% | 46,789 psi | 75% | 2815 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 80% | 38,624 psi | 62% | 2694 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 82% | 44,353 psi | 71% | 2776 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,388 psi | 54% | 2552 fps | 98.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,850 psi | 82% | 2910 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 40,451 psi | 65% | 2766 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,137 psi | 44% | 1654 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,750 psi | 83% | 2877 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,008 psi | 77% | 2805 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,125 psi | 80% | 2831 fps | 98.1% |
| IMR 4350 | <<locked>> | 84% | 41,452 psi | 66% | 2700 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,192 psi | 68% | 2700 fps | 96.2% |
| IMR 4831 | <<locked>> | 80% | 35,230 psi | 56% | 2598 fps | 97.1% |
| IMR 4895 | <<locked>> | 80% | 50,357 psi | 81% | 2894 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 52,634 psi | 84% | 2910 fps | 95.4% |
| Lovex S060 | <<locked>> | 80% | 52,562 psi | 84% | 2848 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 48,196 psi | 77% | 2802 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,726 psi | 64% | 2648 fps | 97% |
| Lovex S070 | <<locked>> | 80% | 38,043 psi | 61% | 2628 fps | 95.3% |
| Lovex S071 | <<locked>> | 94% | 36,463 psi | 58% | 2625 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 52,417 psi | 84% | 2864 fps | 100% |
| Norma 202 | <<locked>> | 80% | 53,200 psi | 85% | 2864 fps | 100% |
| Norma 203B | <<locked>> | 80% | 48,443 psi | 78% | 2848 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 47,195 psi | 76% | 2858 fps | 95.8% |
| Norma MRP | <<locked>> | 90% | 39,755 psi | 64% | 2795 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 36,579 psi | 59% | 2644 fps | 97.3% |
| Ramshot Big Game | <<locked>> | 80% | 48,834 psi | 78% | 2871 fps | 99.9% |
| Ramshot Grand | <<locked>> | 98% | 48,109 psi | 77% | 2943 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 35,389 psi | 57% | 2625 fps | 95% |
| Ramshot Magnum | <<locked>> | 98% | 42,989 psi | 69% | 2815 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,630 psi | 44% | 1693 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,818 psi | 75% | 2799 fps | 98% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,076 psi | 69% | 2848 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,347 psi | 58% | 2661 fps | 97% |
| ReloadSwiss RS 70 | 64.5 gr | 80% | 35,491 psi | 57% | 2667 fps | 96.2% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 39,624 psi | 64% | 2815 fps | 95.1% |
| Rottweil R 902 | <<locked>> | 80% | 50,009 psi | 80% | 2818 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,642 psi | 70% | 2749 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 94% | 51,155 psi | 82% | 2897 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 92% | 44,976 psi | 72% | 2835 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 40,814 psi | 65% | 2667 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,726 psi | 64% | 2648 fps | 97% |
| Shooters World Precision | <<locked>> | 80% | 48,196 psi | 77% | 2802 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,043 psi | 61% | 2628 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,657 psi | 72% | 2802 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 52,098 psi | 84% | 2890 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,078 psi | 72% | 2664 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,001 psi | 63% | 2592 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 44,556 psi | 71% | 2828 fps | 95.4% |
| Somchem S335 | <<locked>> | 80% | 52,939 psi | 85% | 2795 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,918 psi | 70% | 2746 fps | 99.8% |
| Somchem S365 | <<locked>> | 80% | 32,967 psi | 53% | 2598 fps | 99.1% |
| Somchem S385 | <<locked>> | 88% | 40,001 psi | 64% | 2700 fps | 95% |
| Vihtavuori N135 | <<locked>> | 80% | 50,256 psi | 81% | 2782 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 50,430 psi | 81% | 2795 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,989 psi | 67% | 2677 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 37,855 psi | 61% | 2641 fps | 97.6% |
| Vihtavuori N165 | <<locked>> | 94% | 42,003 psi | 67% | 2733 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 48,776 psi | 78% | 2789 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,478 psi | 60% | 2644 fps | 97.3% |
| Vihtavuori N555 | <<locked>> | 82% | 30,748 psi | 49% | 2533 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,057 psi | 59% | 2612 fps | 99.2% |
| Winchester 760 | <<locked>> | 80% | 38,769 psi | 62% | 2697 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 84% | 26,353 psi | 42% | 2477 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 52,098 psi | 84% | 2897 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 45,353 psi | 73% | 2802 fps | 95.4% |
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 89 powders for .300 Win. Mag. loaded with the .307 | 165gr | Rhino Solid Shank. Norma MRP delivers the highest muzzle velocity at 3,120 fps; across all powders the maximum-charge window runs from 1,850 fps to 3,120 fps. Accurate 3100 gives the best case fill at 100 %, and 89 of the 89 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 165.0 gr projectile in 0.307" calls for a 1:15.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, Alliant Reloder-22 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 .307 | 165gr | 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.