Load Specifications
Load data in caliber .270 WSM with .277 | 130gr | Rhino Solid Shank bullet and 73 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Winchester StaBALL HD and Accurate High Country.
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>> | 94% | 55,158 psi | 86% | 3038 fps | 99.7% |
| Accurate 4350 | <<locked>> | 86% | 56,579 psi | 89% | 3081 fps | 100% |
| Accurate High Country | <<locked>> | 92% | 55,245 psi | 87% | 3173 fps | 97.5% |
| Accurate MAGPRO | <<locked>> | 94% | 56,115 psi | 88% | 3169 fps | 96.4% |
| ADI AR 2208 | <<locked>> | 82% | 56,449 psi | 88% | 3025 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 55,521 psi | 87% | 3107 fps | 98.3% |
| ADI AR 2213 | <<locked>> | 96% | 57,029 psi | 89% | 3163 fps | 97.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 43,801 psi | 69% | 2959 fps | 97.9% |
| Alliant Reloder-16 | <<locked>> | 88% | 55,651 psi | 87% | 3123 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 56,898 psi | 89% | 3140 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 55,477 psi | 87% | 3100 fps | 98.4% |
| Alliant Reloder-22 | <<locked>> | 96% | 57,130 psi | 90% | 3169 fps | 98.7% |
| Alliant Reloder-23 | <<locked>> | 96% | 54,737 psi | 86% | 3100 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 53,954 psi | 85% | 3146 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 54,911 psi | 86% | 3189 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 56,115 psi | 88% | 3150 fps | 98.5% |
| Bofors RP30ᴾ | <<locked>> | 100% | 50,241 psi | 79% | 3077 fps | 96.9% |
| Bofors RP5 | <<locked>> | 96% | 57,130 psi | 90% | 3169 fps | 98.7% |
| Bofors RP7 | <<locked>> | 84% | 55,056 psi | 86% | 3009 fps | 98.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 52,997 psi | 83% | 3081 fps | 97.6% |
| Hodgdon H414 | <<locked>> | 86% | 57,072 psi | 89% | 3117 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 84% | 56,188 psi | 88% | 3068 fps | 98.6% |
| Hodgdon H4831 | <<locked>> | 94% | 57,188 psi | 90% | 3104 fps | 96.9% |
| Hodgdon H4831 SC | <<locked>> | 94% | 55,912 psi | 88% | 3084 fps | 96.7% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 56,478 psi | 89% | 3045 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 52,823 psi | 83% | 3199 fps | 98.9% |
| Hodgdon Superformance | <<locked>> | 86% | 57,232 psi | 90% | 3153 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,449 psi | 59% | 1942 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 55,724 psi | 87% | 3041 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 84% | 55,666 psi | 87% | 3025 fps | 99.3% |
| IMR 4831 | <<locked>> | 88% | 56,391 psi | 88% | 3064 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 54,853 psi | 86% | 3028 fps | 96.7% |
| IMR 7828 SSC | <<locked>> | 96% | 54,984 psi | 86% | 3140 fps | 97.3% |
| Lovex S065 | <<locked>> | 86% | 56,985 psi | 89% | 3038 fps | 99.9% |
| Lovex S070 | <<locked>> | 86% | 55,492 psi | 87% | 3031 fps | 99.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 56,115 psi | 88% | 3054 fps | 99.8% |
| Norma 204 | <<locked>> | 88% | 56,550 psi | 89% | 3094 fps | 98.3% |
| Norma 217ᴾ | <<locked>> | 100% | 39,958 psi | 63% | 2894 fps | 96% |
| Norma MRP | <<locked>> | 94% | 56,913 psi | 89% | 3196 fps | 99.6% |
| Norma URP | <<locked>> | 88% | 57,580 psi | 90% | 3107 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 55,579 psi | 87% | 3159 fps | 97.7% |
| Ramshot Hunter | <<locked>> | 88% | 56,202 psi | 88% | 3107 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 98% | 54,085 psi | 85% | 3097 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,232 psi | 60% | 1988 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 56,347 psi | 88% | 3130 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 55,782 psi | 87% | 3094 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 56,942 psi | 89% | 3173 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 53,490 psi | 84% | 3202 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 82% | 56,855 psi | 89% | 3028 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 57,130 psi | 90% | 3074 fps | 97.6% |
| Rottweil R 905 | <<locked>> | 92% | 55,143 psi | 86% | 3091 fps | 98.4% |
| Rottweil R 907 | <<locked>> | 84% | 55,056 psi | 86% | 3009 fps | 98.9% |
| Shooters World Long Rifle | <<locked>> | 86% | 56,985 psi | 89% | 3038 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 86% | 55,492 psi | 87% | 3031 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 57,145 psi | 90% | 3077 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 55,724 psi | 87% | 2887 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 56,362 psi | 88% | 2986 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 54,694 psi | 86% | 3084 fps | 98.3% |
| Somchem S355 | <<locked>> | 82% | 56,289 psi | 88% | 3022 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 55,492 psi | 87% | 3009 fps | 96.6% |
| Somchem S365 | <<locked>> | 88% | 54,259 psi | 85% | 3061 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 56,289 psi | 88% | 3071 fps | 99.1% |
| Vihtavuori N150 | <<locked>> | 84% | 57,029 psi | 89% | 2986 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 55,796 psi | 87% | 3041 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 55,143 psi | 86% | 3038 fps | 98.7% |
| Vihtavuori N550 | <<locked>> | 86% | 55,434 psi | 87% | 3051 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 54,665 psi | 86% | 3084 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 56,623 psi | 89% | 3179 fps | 97.1% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 57,145 psi | 90% | 3166 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 54,940 psi | 86% | 2999 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 57,276 psi | 90% | 3123 fps | 99.5% |
| Winchester StaBALL HD | <<locked>> | 98% | 54,795 psi | 86% | 3235 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 55,448 psi | 87% | 3054 fps | 98.3% |
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 3100 | <<locked>> | 80% | 36,332 psi | 57% | 2661 fps | 96.3% |
| Accurate 4350 | <<locked>> | 80% | 46,978 psi | 74% | 2917 fps | 99.7% |
| Accurate High Country | 61.1 gr | 86% | 45,585 psi | 71% | 2986 fps | 95.2% |
| Accurate MAGPRO | <<locked>> | 92% | 52,388 psi | 82% | 3104 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 53,316 psi | 84% | 2972 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 43,627 psi | 68% | 2874 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 90% | 47,369 psi | 74% | 2979 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 94% | 36,970 psi | 58% | 2782 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,845 psi | 69% | 2904 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 50,082 psi | 78% | 3031 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 41,263 psi | 65% | 2815 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 86% | 42,018 psi | 66% | 2874 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 34,084 psi | 53% | 2680 fps | 98.9% |
| Alliant Reloder-25 | <<locked>> | 82% | 32,039 psi | 50% | 2638 fps | 95% |
| Alliant Reloder-26 | 58.6 gr | 80% | 36,854 psi | 58% | 2818 fps | 97.9% |
| Bofors RP15 | <<locked>> | 88% | 41,727 psi | 65% | 2867 fps | 95.1% |
| Bofors RP30 | <<locked>> | 96% | 44,570 psi | 70% | 2963 fps | 95.3% |
| Bofors RP5 | <<locked>> | 86% | 42,018 psi | 66% | 2874 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 48,994 psi | 77% | 2900 fps | 98% |
| Hodgdon H1000 | <<locked>> | 94% | 44,106 psi | 69% | 2900 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 80% | 47,442 psi | 74% | 2943 fps | 98.2% |
| Hodgdon H4350 | <<locked>> | 80% | 49,734 psi | 78% | 2953 fps | 97.6% |
| Hodgdon H4831 | <<locked>> | 90% | 50,459 psi | 79% | 2986 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 90% | 49,559 psi | 78% | 2966 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,887 psi | 66% | 2792 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 92% | 41,640 psi | 65% | 2946 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 46,485 psi | 73% | 2959 fps | 97.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,224 psi | 44% | 1739 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,222 psi | 69% | 2825 fps | 97% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,792 psi | 78% | 2920 fps | 98.5% |
| IMR 4831 | <<locked>> | 80% | 44,338 psi | 69% | 2851 fps | 99.5% |
| IMR 4955 Enduron | <<locked>> | 88% | 48,878 psi | 77% | 2917 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 92% | 48,660 psi | 76% | 3018 fps | 95.7% |
| Lovex S065 | <<locked>> | 80% | 48,124 psi | 75% | 2881 fps | 99.2% |
| Lovex S070 | <<locked>> | 80% | 46,615 psi | 73% | 2871 fps | 98.2% |
| Lovex S071 | <<locked>> | 82% | 33,794 psi | 53% | 2595 fps | 95.3% |
| Norma 204 | <<locked>> | 80% | 44,092 psi | 69% | 2858 fps | 95.6% |
| Norma 217 | <<locked>> | 98% | 37,811 psi | 59% | 2838 fps | 95.1% |
| Norma MRP | <<locked>> | 80% | 36,666 psi | 57% | 2772 fps | 95% |
| Norma URP | <<locked>> | 80% | 45,339 psi | 71% | 2890 fps | 99.5% |
| Ramshot Grand | <<locked>> | 90% | 45,818 psi | 72% | 2969 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 44,034 psi | 69% | 2877 fps | 98.2% |
| Ramshot Magnum | <<locked>> | 88% | 38,928 psi | 61% | 2789 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,790 psi | 45% | 1778 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 52,823 psi | 83% | 3077 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 46,166 psi | 72% | 2927 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 44,034 psi | 69% | 2933 fps | 99.2% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 38,914 psi | 61% | 2867 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 80% | 53,505 psi | 84% | 2979 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 47,993 psi | 75% | 2907 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 82% | 40,727 psi | 64% | 2802 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 48,994 psi | 77% | 2900 fps | 98% |
| Shooters World Long Rifle | <<locked>> | 80% | 48,124 psi | 75% | 2881 fps | 99.2% |
| Shooters World SW4350 | <<locked>> | 80% | 46,615 psi | 73% | 2871 fps | 98.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 53,824 psi | 84% | 3025 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 52,620 psi | 82% | 2841 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 47,166 psi | 74% | 2822 fps | 98.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 42,975 psi | 67% | 2854 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 53,011 psi | 83% | 2969 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 49,168 psi | 77% | 2894 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 42,424 psi | 66% | 2854 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 39,378 psi | 62% | 2736 fps | 95.5% |
| Vihtavuori N150 | <<locked>> | 80% | 50,647 psi | 79% | 2887 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,615 psi | 73% | 2881 fps | 99.6% |
| Vihtavuori N165 | <<locked>> | 86% | 40,872 psi | 64% | 2766 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 46,340 psi | 73% | 2890 fps | 99.5% |
| Vihtavuori N555 | <<locked>> | 80% | 38,305 psi | 60% | 2766 fps | 98.9% |
| Vihtavuori N560 | <<locked>> | 90% | 50,009 psi | 78% | 3058 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 94% | 47,442 psi | 74% | 2989 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,440 psi | 71% | 2841 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,659 psi | 75% | 2946 fps | 98.3% |
| Winchester StaBALL HD | 56.3 gr | 80% | 30,980 psi | 49% | 2703 fps | 99.1% |
| Winchester Supreme 780 | <<locked>> | 86% | 43,062 psi | 67% | 2822 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 79 powders for .270 WSM loaded with the .277 | 130gr | Rhino Solid Shank. Winchester StaBALL HD delivers the highest muzzle velocity at 3,235 fps; across all powders the maximum-charge window runs from 1,942 fps to 3,235 fps. ADI AR 2217 gives the best case fill at 100 %, and 79 of the 79 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 130.0 gr projectile in 0.277" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-25 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, Winchester StaBALL HD, Accurate High Country rank at the top here: for .270 WSM with the .277 | 130gr | Rhino Solid Shank they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Baschieri & Pellagri 109, IMR 8133 Enduron, ReloadSwiss RS 80 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.