Load Specifications
Load data in caliber .270 WSM with .277 | 150gr | Rhino Solid Shank bullet and 72 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Hodgdon Retumbo and ReloadSwiss RS 76.
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% | 56,695 psi | 89% | 2871 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 57,740 psi | 90% | 2897 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 56,956 psi | 89% | 3009 fps | 98.9% |
| Accurate MAGPRO | <<locked>> | 92% | 57,392 psi | 90% | 3002 fps | 98% |
| ADI AR 2209 | <<locked>> | 90% | 56,550 psi | 89% | 2930 fps | 99.4% |
| ADI AR 2213 | <<locked>> | 92% | 54,418 psi | 85% | 2936 fps | 98.4% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 52,721 psi | 83% | 2900 fps | 98.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 47,805 psi | 75% | 2877 fps | 99.7% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 57,145 psi | 90% | 2933 fps | 99.4% |
| Alliant Reloder-16 | <<locked>> | 86% | 56,884 psi | 89% | 2933 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 56,565 psi | 89% | 2927 fps | 99.4% |
| Alliant Reloder-22 | <<locked>> | 92% | 55,027 psi | 86% | 2943 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 94% | 56,565 psi | 89% | 2920 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 55,434 psi | 87% | 2976 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 56,739 psi | 89% | 3009 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 55,898 psi | 88% | 2890 fps | 95.9% |
| Bofors RP15 | <<locked>> | 96% | 57,609 psi | 90% | 2982 fps | 99.5% |
| Bofors RP30ᴾ | <<locked>> | 100% | 55,550 psi | 87% | 2979 fps | 99% |
| Bofors RP5 | <<locked>> | 92% | 55,027 psi | 86% | 2943 fps | 99.4% |
| Bofors RP7 | <<locked>> | 82% | 55,303 psi | 87% | 2825 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 57,551 psi | 90% | 2979 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 82% | 54,650 psi | 86% | 2884 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 82% | 56,550 psi | 89% | 2884 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 90% | 54,592 psi | 86% | 2877 fps | 97.8% |
| Hodgdon H4831 SC | <<locked>> | 92% | 56,898 psi | 89% | 2913 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 57,595 psi | 90% | 2858 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 54,389 psi | 85% | 3045 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 82% | 54,404 psi | 85% | 2913 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,724 psi | 59% | 1808 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 56,463 psi | 88% | 2864 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 82% | 56,101 psi | 88% | 2841 fps | 99.9% |
| IMR 4831 | <<locked>> | 86% | 57,217 psi | 90% | 2877 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 55,492 psi | 87% | 2858 fps | 98.1% |
| IMR 7828 SSC | <<locked>> | 94% | 56,188 psi | 88% | 2976 fps | 98.7% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 43,729 psi | 69% | 2789 fps | 96.5% |
| Lovex S065 | <<locked>> | 84% | 57,696 psi | 90% | 2851 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 56,115 psi | 88% | 2851 fps | 99.9% |
| Lovex S071 | <<locked>> | 98% | 57,725 psi | 90% | 2884 fps | 100% |
| Norma 204 | <<locked>> | 86% | 57,479 psi | 90% | 2920 fps | 99.4% |
| Norma 217ᴾ | <<locked>> | 100% | 44,121 psi | 69% | 2822 fps | 98.7% |
| Norma MRP | <<locked>> | 90% | 55,071 psi | 86% | 2969 fps | 99.9% |
| Norma URP | <<locked>> | 84% | 55,245 psi | 87% | 2867 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 56,942 psi | 89% | 2999 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 86% | 57,246 psi | 90% | 2923 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 55,550 psi | 87% | 2936 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,580 psi | 60% | 1850 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 56,811 psi | 89% | 2910 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 54,389 psi | 85% | 2933 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 55,013 psi | 86% | 3041 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 54,099 psi | 85% | 2999 fps | 97.7% |
| Rottweil R 904 | <<locked>> | 88% | 54,621 psi | 86% | 2848 fps | 98.4% |
| Rottweil R 905 | <<locked>> | 90% | 56,347 psi | 88% | 2920 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 82% | 55,303 psi | 87% | 2825 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 84% | 57,696 psi | 90% | 2851 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 56,115 psi | 88% | 2851 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 56,768 psi | 89% | 2805 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 55,912 psi | 88% | 2913 fps | 99.4% |
| Somchem S361 | <<locked>> | 88% | 56,028 psi | 88% | 2838 fps | 98% |
| Somchem S365 | <<locked>> | 86% | 55,840 psi | 88% | 2877 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 57,174 psi | 90% | 2894 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 82% | 57,406 psi | 90% | 2792 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 56,739 psi | 89% | 2858 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 56,304 psi | 88% | 2871 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 84% | 56,188 psi | 88% | 2867 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 56,173 psi | 88% | 2904 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 54,723 psi | 86% | 2959 fps | 98.1% |
| Vihtavuori N565 | <<locked>> | 96% | 55,361 psi | 87% | 2949 fps | 98.4% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 54,926 psi | 86% | 2995 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 55,535 psi | 87% | 2808 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 54,650 psi | 86% | 2884 fps | 99.8% |
| Winchester StaBALL HD | <<locked>> | 94% | 53,925 psi | 85% | 3005 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 56,550 psi | 89% | 2884 fps | 99.3% |
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% | 39,653 psi | 62% | 2569 fps | 98.6% |
| Accurate 4350 | <<locked>> | 80% | 51,024 psi | 80% | 2792 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 41,423 psi | 65% | 2713 fps | 95.6% |
| Accurate MAGPRO | <<locked>> | 84% | 44,614 psi | 70% | 2769 fps | 95.1% |
| ADI AR 2209 | <<locked>> | 80% | 41,800 psi | 66% | 2661 fps | 96.8% |
| ADI AR 2213 | <<locked>> | 84% | 42,743 psi | 67% | 2710 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 92% | 41,437 psi | 65% | 2674 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 88% | 33,866 psi | 53% | 2543 fps | 95.9% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 42,351 psi | 66% | 2664 fps | 96.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 47,384 psi | 74% | 2779 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 41,974 psi | 66% | 2657 fps | 96.9% |
| Alliant Reloder-22 | <<locked>> | 80% | 38,305 psi | 60% | 2615 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 37,246 psi | 58% | 2585 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 32,793 psi | 51% | 2507 fps | 97.4% |
| Alliant Reloder-26 | <<locked>> | 80% | 40,698 psi | 64% | 2730 fps | 99.7% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 52,779 psi | 83% | 2835 fps | 95.1% |
| Bofors RP15 | <<locked>> | 82% | 38,087 psi | 60% | 2608 fps | 95.6% |
| Bofors RP30 | <<locked>> | 88% | 38,580 psi | 60% | 2654 fps | 95.1% |
| Bofors RP5 | <<locked>> | 80% | 38,305 psi | 60% | 2615 fps | 95.9% |
| Bofors RP7 | <<locked>> | 80% | 52,257 psi | 82% | 2776 fps | 99.4% |
| Hodgdon H1000 | <<locked>> | 88% | 39,827 psi | 62% | 2641 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 80% | 51,285 psi | 80% | 2828 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 80% | 53,388 psi | 84% | 2831 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 84% | 45,223 psi | 71% | 2707 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 84% | 44,643 psi | 70% | 2697 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 45,542 psi | 71% | 2674 fps | 100% |
| Hodgdon Retumbo | 56.1 gr | 84% | 36,085 psi | 57% | 2638 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 50,850 psi | 80% | 2854 fps | 99.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,413 psi | 45% | 1617 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 47,369 psi | 74% | 2710 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 52,997 psi | 83% | 2792 fps | 99.7% |
| IMR 4831 | <<locked>> | 80% | 48,109 psi | 75% | 2733 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 44,019 psi | 69% | 2648 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 84% | 41,365 psi | 65% | 2690 fps | 95.3% |
| IMR 8133 Enduron | <<locked>> | 98% | 41,292 psi | 65% | 2736 fps | 95.8% |
| Lovex S065 | <<locked>> | 80% | 51,561 psi | 81% | 2756 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 49,937 psi | 78% | 2749 fps | 99.6% |
| Lovex S071 | <<locked>> | 80% | 34,867 psi | 55% | 2457 fps | 97.3% |
| Norma 204 | <<locked>> | 80% | 47,471 psi | 74% | 2749 fps | 97.9% |
| Norma 217 | <<locked>> | 92% | 35,099 psi | 55% | 2608 fps | 95.9% |
| Norma MRP | <<locked>> | 80% | 39,987 psi | 63% | 2684 fps | 97.8% |
| Norma URP | <<locked>> | 80% | 48,936 psi | 77% | 2766 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 41,191 psi | 65% | 2700 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 47,529 psi | 74% | 2762 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 82% | 35,273 psi | 55% | 2539 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,051 psi | 46% | 1654 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 50,357 psi | 79% | 2808 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 47,776 psi | 75% | 2822 fps | 100% |
| ReloadSwiss RS 76 | 58.6 gr | 82% | 33,243 psi | 52% | 2556 fps | 95.4% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 44,338 psi | 69% | 2812 fps | 95.1% |
| Rottweil R 904 | <<locked>> | 80% | 43,250 psi | 68% | 2638 fps | 96% |
| Rottweil R 905 | <<locked>> | 80% | 41,684 psi | 65% | 2651 fps | 97% |
| Rottweil R 907 | <<locked>> | 80% | 52,257 psi | 82% | 2776 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 51,561 psi | 81% | 2756 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 49,937 psi | 78% | 2749 fps | 99.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 50,372 psi | 79% | 2700 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 41,336 psi | 65% | 2644 fps | 96.8% |
| Somchem S361 | <<locked>> | 80% | 44,150 psi | 69% | 2628 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 46,369 psi | 73% | 2730 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 42,670 psi | 67% | 2638 fps | 97.9% |
| Vihtavuori N150 | <<locked>> | 80% | 54,186 psi | 85% | 2746 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 50,241 psi | 79% | 2756 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 37,159 psi | 58% | 2513 fps | 96% |
| Vihtavuori N550 | <<locked>> | 80% | 49,937 psi | 78% | 2766 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 42,003 psi | 66% | 2664 fps | 99.9% |
| Vihtavuori N560 | <<locked>> | 82% | 42,511 psi | 67% | 2723 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 88% | 43,352 psi | 68% | 2726 fps | 95.7% |
| Vihtavuori N568 | <<locked>> | 96% | 48,530 psi | 76% | 2881 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 49,095 psi | 77% | 2717 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 51,576 psi | 81% | 2831 fps | 99.6% |
| Winchester StaBALL HD | 54.8 gr | 80% | 33,721 psi | 53% | 2628 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 38,856 psi | 61% | 2559 fps | 95.9% |
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 .277 | 150gr | Rhino Solid Shank. Hodgdon Retumbo delivers the highest muzzle velocity at 3,045 fps; across all powders the maximum-charge window runs from 1,808 fps to 3,045 fps. ADI AR 2217 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 59–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.277" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Bofors RP30 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, Hodgdon Retumbo, ReloadSwiss RS 76 rank at the top here: for .270 WSM with the .277 | 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.