Load Specifications
Load data in caliber .270 WSM with .270 | 120gr | MRR Green Hunting bullet and 72 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Norma MRP and Alliant Reloder-16.
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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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 96% | 54,926 psi | 86% | 3136 fps | 99.3% |
| Accurate 4350 | <<locked>> | 88% | 56,159 psi | 88% | 3182 fps | 100% |
| ADI AR 2208 | <<locked>> | 84% | 57,000 psi | 89% | 3143 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 55,680 psi | 87% | 3209 fps | 97.6% |
| ADI AR 2213 | <<locked>> | 98% | 56,782 psi | 89% | 3258 fps | 96.5% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 55,825 psi | 87% | 3202 fps | 97.6% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 55,825 psi | 87% | 3202 fps | 97.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 55,274 psi | 87% | 3123 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 55,390 psi | 87% | 3228 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 56,666 psi | 89% | 3251 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 55,216 psi | 87% | 3196 fps | 97.6% |
| Alliant Reloder-22 | <<locked>> | 98% | 56,550 psi | 89% | 3264 fps | 98% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 57,305 psi | 90% | 3251 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 50,227 psi | 79% | 3179 fps | 99.5% |
| Alliant Reloder-26 | <<locked>> | 94% | 54,070 psi | 85% | 3284 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 55,448 psi | 87% | 3241 fps | 97.6% |
| Bofors RP3 | <<locked>> | 82% | 56,739 psi | 89% | 3143 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 56,550 psi | 89% | 3264 fps | 98% |
| Bofors RP7 | <<locked>> | 86% | 55,274 psi | 87% | 3114 fps | 98.3% |
| Hodgdon H380 | <<locked>> | 82% | 56,405 psi | 88% | 3153 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 88% | 57,029 psi | 89% | 3222 fps | 99% |
| Hodgdon H4350 | <<locked>> | 86% | 56,188 psi | 88% | 3169 fps | 97.9% |
| Hodgdon H4831 | <<locked>> | 96% | 57,029 psi | 89% | 3199 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 56,144 psi | 88% | 3153 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 49,168 psi | 77% | 3215 fps | 97.1% |
| Hodgdon Superformance | <<locked>> | 88% | 56,927 psi | 89% | 3251 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,043 psi | 58% | 2008 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 56,449 psi | 88% | 3123 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 56,014 psi | 88% | 3146 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 86% | 56,173 psi | 88% | 3136 fps | 98.8% |
| IMR 4831 | <<locked>> | 90% | 56,086 psi | 88% | 3169 fps | 100% |
| IMR 7828 SSC | <<locked>> | 98% | 54,636 psi | 86% | 3228 fps | 96.1% |
| Lovex S062 | <<locked>> | 82% | 57,638 psi | 90% | 3127 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 57,377 psi | 90% | 3150 fps | 99.7% |
| Lovex S070 | <<locked>> | 88% | 55,492 psi | 87% | 3136 fps | 98.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 52,446 psi | 82% | 3094 fps | 99.1% |
| Norma 204 | <<locked>> | 90% | 56,695 psi | 89% | 3199 fps | 97.6% |
| Norma MRP | <<locked>> | 96% | 56,333 psi | 88% | 3294 fps | 99% |
| Norma URP | <<locked>> | 90% | 57,305 psi | 90% | 3212 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 55,056 psi | 86% | 3245 fps | 96.6% |
| Ramshot Hunter | <<locked>> | 90% | 56,101 psi | 88% | 3209 fps | 99.4% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 53,505 psi | 84% | 3186 fps | 98.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,985 psi | 60% | 2057 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 55,796 psi | 87% | 3127 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 56,014 psi | 88% | 3245 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 55,477 psi | 87% | 3199 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 56,811 psi | 89% | 3278 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 49,617 psi | 78% | 3212 fps | 98.3% |
| Rottweil R 903 | <<locked>> | 84% | 56,855 psi | 89% | 3140 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 57,188 psi | 90% | 3173 fps | 96.7% |
| Rottweil R 905 | <<locked>> | 94% | 54,781 psi | 86% | 3186 fps | 97.6% |
| Rottweil R 907 | <<locked>> | 86% | 55,274 psi | 87% | 3114 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 88% | 57,377 psi | 90% | 3150 fps | 99.7% |
| Shooters World Precision | <<locked>> | 82% | 57,638 psi | 90% | 3127 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 55,492 psi | 87% | 3136 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 57,290 psi | 90% | 3192 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 56,130 psi | 88% | 3002 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 56,826 psi | 89% | 3091 fps | 99% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 54,317 psi | 85% | 3179 fps | 97.5% |
| Somchem S355 | <<locked>> | 84% | 56,362 psi | 88% | 3133 fps | 100% |
| Somchem S365 | <<locked>> | 92% | 57,203 psi | 90% | 3219 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 55,927 psi | 88% | 3166 fps | 98.5% |
| Vihtavuori N150 | <<locked>> | 86% | 57,363 psi | 90% | 3100 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 55,666 psi | 87% | 3146 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 98% | 54,795 psi | 86% | 3130 fps | 98% |
| Vihtavuori N550 | <<locked>> | 88% | 55,216 psi | 87% | 3156 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 96% | 57,217 psi | 90% | 3238 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 56,304 psi | 88% | 3274 fps | 96.1% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 54,984 psi | 86% | 3107 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 57,290 psi | 90% | 3228 fps | 99.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 53,156 psi | 83% | 3337 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 55,448 psi | 87% | 3150 fps | 97.5% |
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 3100 | <<locked>> | 82% | 35,998 psi | 56% | 2746 fps | 95.1% |
| Accurate 4350 | <<locked>> | 80% | 43,932 psi | 69% | 2956 fps | 98.9% |
| ADI AR 2208 | <<locked>> | 80% | 50,647 psi | 79% | 3031 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 88% | 46,267 psi | 73% | 3025 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 96% | 53,534 psi | 84% | 3196 fps | 95.7% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 46,572 psi | 73% | 3025 fps | 95.5% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 46,572 psi | 73% | 3025 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 52,011 psi | 82% | 3068 fps | 100% |
| Alliant Reloder-16 | 52.8 gr | 80% | 41,191 psi | 65% | 2943 fps | 98.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,731 psi | 73% | 3081 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 46,108 psi | 72% | 3018 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 90% | 44,382 psi | 70% | 3025 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,850 psi | 50% | 2707 fps | 97.3% |
| Alliant Reloder-25 | <<locked>> | 88% | 35,476 psi | 56% | 2825 fps | 95.4% |
| Alliant Reloder-26 | 58.3 gr | 80% | 34,258 psi | 54% | 2835 fps | 95.8% |
| Bofors RP15 | <<locked>> | 94% | 46,398 psi | 73% | 3068 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 53,345 psi | 84% | 3091 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 44,382 psi | 70% | 3025 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 46,441 psi | 73% | 2943 fps | 96.6% |
| Hodgdon H380 | <<locked>> | 80% | 53,098 psi | 83% | 3094 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 80% | 44,556 psi | 70% | 2982 fps | 96.7% |
| Hodgdon H4350 | <<locked>> | 80% | 46,978 psi | 74% | 2995 fps | 96% |
| Hodgdon H4831 | <<locked>> | 94% | 53,490 psi | 84% | 3133 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,291 psi | 62% | 2838 fps | 99.2% |
| Hodgdon Retumbo | <<locked>> | 96% | 43,729 psi | 69% | 3084 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 43,526 psi | 68% | 2992 fps | 96.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,021 psi | 44% | 1801 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 53,301 psi | 84% | 3071 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,742 psi | 65% | 2864 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,268 psi | 74% | 2969 fps | 97.3% |
| IMR 4831 | <<locked>> | 80% | 41,727 psi | 65% | 2894 fps | 98.5% |
| IMR 7828 SSC | <<locked>> | 96% | 51,517 psi | 81% | 3169 fps | 95.3% |
| Lovex S062 | <<locked>> | 80% | 54,462 psi | 85% | 3077 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 45,556 psi | 71% | 2927 fps | 98.2% |
| Lovex S070 | <<locked>> | 80% | 44,077 psi | 69% | 2913 fps | 96.8% |
| Lovex S071 | <<locked>> | 88% | 37,275 psi | 58% | 2779 fps | 95.6% |
| Norma 204 | <<locked>> | 84% | 46,949 psi | 74% | 3015 fps | 95.4% |
| Norma MRP | 60.8 gr | 86% | 40,973 psi | 64% | 2979 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 42,511 psi | 67% | 2933 fps | 98.5% |
| Ramshot Grand | <<locked>> | 96% | 51,576 psi | 81% | 3179 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 41,234 psi | 65% | 2913 fps | 96.7% |
| Ramshot Magnum | <<locked>> | 94% | 43,859 psi | 69% | 2992 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,543 psi | 45% | 1844 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 52,562 psi | 82% | 3071 fps | 98.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,327 psi | 77% | 3133 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,062 psi | 67% | 2963 fps | 98.5% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,292 psi | 65% | 2966 fps | 97.9% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 41,133 psi | 64% | 3009 fps | 95.4% |
| Rottweil R 903 | <<locked>> | 80% | 50,488 psi | 79% | 3035 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 50,734 psi | 80% | 3058 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 88% | 45,745 psi | 72% | 3012 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 46,441 psi | 73% | 2943 fps | 96.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,556 psi | 71% | 2927 fps | 98.2% |
| Shooters World Precision | <<locked>> | 80% | 54,462 psi | 85% | 3077 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 44,077 psi | 69% | 2913 fps | 96.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,705 psi | 79% | 3077 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,227 psi | 79% | 2910 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,701 psi | 70% | 2867 fps | 96.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 45,339 psi | 71% | 3005 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 50,125 psi | 79% | 3025 fps | 100% |
| Somchem S365 | <<locked>> | 80% | 39,320 psi | 62% | 2897 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 41,626 psi | 65% | 2884 fps | 95.2% |
| Vihtavuori N150 | <<locked>> | 80% | 47,906 psi | 75% | 2946 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,801 psi | 69% | 2927 fps | 98.7% |
| Vihtavuori N165 | <<locked>> | 90% | 43,033 psi | 67% | 2904 fps | 95.2% |
| Vihtavuori N550 | <<locked>> | 80% | 43,569 psi | 68% | 2933 fps | 98.5% |
| Vihtavuori N555 | <<locked>> | 80% | 35,679 psi | 56% | 2799 fps | 97.4% |
| Vihtavuori N560 | <<locked>> | 94% | 52,866 psi | 83% | 3212 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,772 psi | 67% | 2887 fps | 99.8% |
| Winchester 760 | <<locked>> | 80% | 44,715 psi | 70% | 2986 fps | 96.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 28,950 psi | 45% | 2703 fps | 96.8% |
| Winchester Supreme 780 | <<locked>> | 90% | 45,745 psi | 72% | 2969 fps | 95.2% |
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 72 powders for .270 WSM loaded with the .270 | 120gr | MRR Green Hunting. Winchester StaBALL HD delivers the highest muzzle velocity at 3,337 fps; across all powders the maximum-charge window runs from 2,008 fps to 3,337 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 72 of the 72 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 120.0 gr projectile in 0.277" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-25, Bofors RP15 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. Alliant Reloder-26, Norma MRP, Alliant Reloder-16 rank at the top here: for .270 WSM with the .270 | 120gr | MRR Green Hunting 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.