Load Specifications
Load data in caliber .270 WSM with .277 | 140gr | Rhino Solid Shank bullet and 70 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Vihtavuori N560 and Alliant Reloder-26.
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>> | 92% | 54,853 psi | 86% | 2936 fps | 99.9% |
| Accurate 4350 | <<locked>> | 84% | 55,651 psi | 87% | 2963 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 54,650 psi | 86% | 3064 fps | 98.1% |
| Accurate MAGPRO | <<locked>> | 92% | 55,564 psi | 87% | 3064 fps | 97.1% |
| ADI AR 2209 | <<locked>> | 90% | 54,984 psi | 86% | 2999 fps | 98.8% |
| ADI AR 2213 | <<locked>> | 94% | 56,246 psi | 88% | 3058 fps | 98.1% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 50,865 psi | 80% | 2949 fps | 97.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 46,035 psi | 72% | 2923 fps | 99.1% |
| Alliant Reloder-16 | <<locked>> | 86% | 55,071 psi | 86% | 3009 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 56,188 psi | 88% | 3022 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 54,708 psi | 86% | 2989 fps | 98.8% |
| Alliant Reloder-22 | <<locked>> | 94% | 56,623 psi | 89% | 3064 fps | 99.2% |
| Alliant Reloder-23 | <<locked>> | 96% | 57,653 psi | 90% | 3035 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 56,840 psi | 89% | 3097 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 54,621 psi | 86% | 3077 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 55,825 psi | 87% | 3048 fps | 99% |
| Bofors RP30ᴾ | <<locked>> | 100% | 53,476 psi | 84% | 3041 fps | 98.3% |
| Bofors RP5 | <<locked>> | 94% | 56,623 psi | 89% | 3064 fps | 99.2% |
| Bofors RP7 | <<locked>> | 84% | 57,145 psi | 90% | 2949 fps | 99.6% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 55,593 psi | 87% | 3038 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 84% | 56,130 psi | 88% | 3002 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 82% | 55,027 psi | 86% | 2953 fps | 99% |
| Hodgdon H4831 | <<locked>> | 92% | 56,173 psi | 88% | 2992 fps | 97.5% |
| Hodgdon H4831 SC | <<locked>> | 92% | 55,129 psi | 86% | 2976 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 55,811 psi | 87% | 2933 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 55,680 psi | 87% | 3159 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 84% | 56,159 psi | 88% | 3035 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,536 psi | 59% | 1873 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 54,940 psi | 86% | 2933 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 82% | 54,592 psi | 86% | 2910 fps | 99.5% |
| IMR 4831 | <<locked>> | 86% | 55,535 psi | 87% | 2949 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 57,174 psi | 90% | 2976 fps | 97.8% |
| IMR 7828 SSC | <<locked>> | 96% | 57,609 psi | 90% | 3091 fps | 98.4% |
| Lovex S065 | <<locked>> | 84% | 56,101 psi | 88% | 2923 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 54,433 psi | 85% | 2920 fps | 99.7% |
| Lovex S071 | <<locked>> | 98% | 55,796 psi | 87% | 2949 fps | 99.9% |
| Norma 204 | <<locked>> | 86% | 55,651 psi | 87% | 2982 fps | 98.8% |
| Norma 217ᴾ | <<locked>> | 100% | 42,308 psi | 66% | 2867 fps | 97.7% |
| Norma MRP | <<locked>> | 92% | 56,608 psi | 89% | 3091 fps | 99.8% |
| Norma URP | <<locked>> | 86% | 56,898 psi | 89% | 2992 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 54,824 psi | 86% | 3054 fps | 98.3% |
| Ramshot Hunter | <<locked>> | 86% | 55,419 psi | 87% | 2992 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 98% | 57,145 psi | 90% | 3054 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,363 psi | 60% | 1916 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 55,143 psi | 86% | 2982 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 56,130 psi | 88% | 3058 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 56,579 psi | 89% | 3163 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 52,025 psi | 82% | 3048 fps | 96.5% |
| Rottweil R 904 | <<locked>> | 90% | 56,159 psi | 88% | 2963 fps | 98.1% |
| Rottweil R 905 | <<locked>> | 90% | 54,389 psi | 85% | 2982 fps | 98.9% |
| Rottweil R 907 | <<locked>> | 84% | 57,145 psi | 90% | 2949 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 84% | 56,101 psi | 88% | 2923 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 54,433 psi | 85% | 2920 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 55,332 psi | 87% | 2874 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 57,551 psi | 90% | 3035 fps | 99.2% |
| Somchem S361 | <<locked>> | 88% | 54,462 psi | 85% | 2900 fps | 97.1% |
| Somchem S365 | <<locked>> | 88% | 57,203 psi | 90% | 2995 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 55,564 psi | 87% | 2963 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 82% | 56,043 psi | 88% | 2871 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 54,868 psi | 86% | 2927 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 54,520 psi | 85% | 2933 fps | 99.1% |
| Vihtavuori N550 | <<locked>> | 84% | 54,578 psi | 86% | 2936 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 57,363 psi | 90% | 3022 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 56,217 psi | 88% | 3077 fps | 97.8% |
| Vihtavuori N565 | <<locked>> | 98% | 56,666 psi | 89% | 3064 fps | 98.1% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 52,982 psi | 83% | 3051 fps | 96.1% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 57,363 psi | 90% | 2930 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 56,405 psi | 88% | 3009 fps | 99.8% |
| Winchester StaBALL HD | <<locked>> | 96% | 55,172 psi | 86% | 3130 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 54,737 psi | 86% | 2946 fps | 98.8% |
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 3100 | <<locked>> | 80% | 38,232 psi | 60% | 2621 fps | 97.7% |
| Accurate 4350 | <<locked>> | 80% | 49,269 psi | 77% | 2858 fps | 100% |
| Accurate High Country | <<locked>> | 82% | 42,511 psi | 67% | 2825 fps | 95.1% |
| Accurate MAGPRO | <<locked>> | 88% | 48,762 psi | 76% | 2940 fps | 95.5% |
| ADI AR 2209 | <<locked>> | 80% | 40,495 psi | 63% | 2713 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 86% | 43,918 psi | 69% | 2818 fps | 95.1% |
| ADI AR 2217 | <<locked>> | 96% | 45,237 psi | 71% | 2838 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 90% | 34,650 psi | 54% | 2638 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 45,890 psi | 72% | 2848 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 52,692 psi | 83% | 2969 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,640 psi | 64% | 2713 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 82% | 39,291 psi | 62% | 2723 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 35,940 psi | 56% | 2641 fps | 99.7% |
| Alliant Reloder-25 | <<locked>> | 80% | 31,691 psi | 50% | 2546 fps | 96% |
| Alliant Reloder-26 | 58.2 gr | 80% | 39,030 psi | 61% | 2782 fps | 99.1% |
| Bofors RP15 | <<locked>> | 84% | 39,015 psi | 61% | 2713 fps | 95.1% |
| Bofors RP30 | <<locked>> | 92% | 41,916 psi | 66% | 2812 fps | 95.4% |
| Bofors RP5 | <<locked>> | 82% | 39,291 psi | 62% | 2723 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 50,894 psi | 80% | 2844 fps | 98.9% |
| Hodgdon H1000 | <<locked>> | 90% | 40,915 psi | 64% | 2746 fps | 95% |
| Hodgdon H414 | <<locked>> | 80% | 49,647 psi | 78% | 2890 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 80% | 51,793 psi | 81% | 2897 fps | 98.6% |
| Hodgdon H4831 | <<locked>> | 86% | 46,630 psi | 73% | 2822 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 86% | 45,832 psi | 72% | 2805 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 44,121 psi | 69% | 2740 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 39,059 psi | 61% | 2799 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 49,023 psi | 77% | 2913 fps | 98.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,224 psi | 44% | 1673 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 46,021 psi | 72% | 2772 fps | 98.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 51,619 psi | 81% | 2861 fps | 99.3% |
| IMR 4831 | <<locked>> | 80% | 46,557 psi | 73% | 2799 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 84% | 45,353 psi | 71% | 2759 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 88% | 45,121 psi | 71% | 2858 fps | 95.6% |
| Lovex S065 | <<locked>> | 80% | 50,212 psi | 79% | 2825 fps | 99.7% |
| Lovex S070 | <<locked>> | 80% | 48,515 psi | 76% | 2815 fps | 99.1% |
| Lovex S071 | <<locked>> | 80% | 33,721 psi | 53% | 2510 fps | 96.2% |
| Norma 204 | <<locked>> | 80% | 46,180 psi | 72% | 2812 fps | 97% |
| Norma 217 | <<locked>> | 94% | 35,621 psi | 56% | 2700 fps | 95.2% |
| Norma MRP | <<locked>> | 80% | 38,580 psi | 60% | 2736 fps | 96.7% |
| Norma URP | <<locked>> | 80% | 47,384 psi | 74% | 2831 fps | 99.9% |
| Ramshot Grand | <<locked>> | 86% | 42,293 psi | 66% | 2805 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 46,180 psi | 72% | 2828 fps | 99.2% |
| Ramshot Magnum | <<locked>> | 84% | 36,172 psi | 57% | 2638 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,022 psi | 45% | 1719 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 48,544 psi | 76% | 2871 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 46,224 psi | 72% | 2884 fps | 99.8% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 36,172 psi | 57% | 2717 fps | 95.9% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 48,573 psi | 76% | 2982 fps | 95.6% |
| Rottweil R 904 | <<locked>> | 82% | 44,469 psi | 70% | 2749 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 80% | 40,335 psi | 63% | 2703 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 50,894 psi | 80% | 2844 fps | 98.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 50,212 psi | 79% | 2825 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 80% | 48,515 psi | 76% | 2815 fps | 99.1% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 49,226 psi | 77% | 2769 fps | 99% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 39,987 psi | 63% | 2700 fps | 95.7% |
| Somchem S361 | <<locked>> | 82% | 45,469 psi | 71% | 2736 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 44,686 psi | 70% | 2795 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 41,220 psi | 65% | 2694 fps | 97% |
| Vihtavuori N150 | <<locked>> | 80% | 52,721 psi | 83% | 2818 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 48,689 psi | 76% | 2822 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 38,159 psi | 60% | 2618 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 48,399 psi | 76% | 2831 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 80% | 40,509 psi | 63% | 2723 fps | 99.6% |
| Vihtavuori N560 | 60.7 gr | 86% | 46,427 psi | 73% | 2894 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 90% | 44,483 psi | 70% | 2838 fps | 95.3% |
| Vihtavuori N568 | <<locked>> | 98% | 49,792 psi | 78% | 2989 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 47,587 psi | 75% | 2782 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 49,908 psi | 78% | 2894 fps | 99.2% |
| Winchester StaBALL HD | 55.9 gr | 80% | 32,590 psi | 51% | 2674 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 82% | 40,059 psi | 63% | 2667 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 75 powders for .270 WSM loaded with the .277 | 140gr | Rhino Solid Shank. ReloadSwiss RS 76 delivers the highest muzzle velocity at 3,163 fps; across all powders the maximum-charge window runs from 1,873 fps to 3,163 fps. ADI AR 2217 gives the best case fill at 100 %, and 75 of the 75 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 140.0 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. Winchester StaBALL HD, Vihtavuori N560, Alliant Reloder-26 rank at the top here: for .270 WSM with the .277 | 140gr | Rhino Solid Shank they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-33, Vihtavuori N170, Vihtavuori N570 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.