Load Specifications
Load data in caliber .270 WSM with .277 | 150gr | Nosler AccuBond Long Range bullet and 73 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon H4831 SC, Winchester StaBALL HD and Accurate MAGPRO.
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% | 55,187 psi | 86% | 2844 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 56,304 psi | 88% | 2871 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 55,419 psi | 87% | 2979 fps | 98.6% |
| Accurate MAGPRO | <<locked>> | 92% | 56,043 psi | 88% | 2976 fps | 97.7% |
| ADI AR 2209 | <<locked>> | 90% | 55,317 psi | 87% | 2907 fps | 99.2% |
| ADI AR 2213 | <<locked>> | 94% | 56,768 psi | 89% | 2969 fps | 98.6% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 51,343 psi | 80% | 2871 fps | 98% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 46,586 psi | 73% | 2848 fps | 99.5% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 55,753 psi | 87% | 2907 fps | 99.2% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 55,753 psi | 87% | 2907 fps | 99.2% |
| Alliant Reloder-16 | <<locked>> | 86% | 55,622 psi | 87% | 2913 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 56,913 psi | 89% | 2930 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 55,100 psi | 86% | 2900 fps | 99.2% |
| Alliant Reloder-22 | <<locked>> | 94% | 57,174 psi | 90% | 2972 fps | 99.5% |
| Alliant Reloder-23 | <<locked>> | 94% | 54,984 psi | 86% | 2897 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 57,493 psi | 90% | 3002 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 55,129 psi | 86% | 2986 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 56,376 psi | 88% | 2959 fps | 99.3% |
| Bofors RP30ᴾ | <<locked>> | 100% | 53,867 psi | 84% | 2953 fps | 98.7% |
| Bofors RP5 | <<locked>> | 94% | 57,174 psi | 90% | 2972 fps | 99.5% |
| Bofors RP7 | <<locked>> | 84% | 57,551 psi | 90% | 2854 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 56,362 psi | 88% | 2956 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 84% | 56,797 psi | 89% | 2913 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 82% | 55,477 psi | 87% | 2861 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 92% | 56,826 psi | 89% | 2907 fps | 98.1% |
| Hodgdon H4831 SC | <<locked>> | 92% | 55,753 psi | 87% | 2890 fps | 97.9% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 56,434 psi | 88% | 2838 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 56,376 psi | 88% | 3074 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 84% | 56,855 psi | 89% | 2946 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,637 psi | 59% | 1798 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 55,303 psi | 87% | 2838 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 82% | 55,114 psi | 86% | 2822 fps | 99.8% |
| IMR 4831 | <<locked>> | 86% | 56,159 psi | 88% | 2858 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 57,653 psi | 90% | 2887 fps | 98.3% |
| IMR 7828 SSC | <<locked>> | 94% | 54,824 psi | 86% | 2946 fps | 98.4% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 42,612 psi | 67% | 2762 fps | 96.1% |
| Lovex S065 | <<locked>> | 84% | 56,681 psi | 89% | 2831 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 55,085 psi | 86% | 2831 fps | 99.9% |
| Lovex S071 | <<locked>> | 98% | 56,492 psi | 89% | 2861 fps | 100% |
| Norma 204 | <<locked>> | 86% | 56,260 psi | 88% | 2897 fps | 99.2% |
| Norma 217ᴾ | <<locked>> | 100% | 42,728 psi | 67% | 2789 fps | 98.3% |
| Norma MRP | <<locked>> | 92% | 56,971 psi | 89% | 2995 fps | 99.9% |
| Norma URP | <<locked>> | 86% | 57,232 psi | 90% | 2897 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 55,550 psi | 87% | 2969 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 86% | 55,999 psi | 88% | 2904 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 53,998 psi | 85% | 2907 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,508 psi | 60% | 1841 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 55,753 psi | 87% | 2890 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 56,637 psi | 89% | 2963 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 57,217 psi | 90% | 3074 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 52,402 psi | 82% | 2963 fps | 97.2% |
| Rottweil R 904 | <<locked>> | 90% | 56,681 psi | 89% | 2874 fps | 98.6% |
| Rottweil R 905 | <<locked>> | 90% | 55,100 psi | 86% | 2894 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 84% | 57,551 psi | 90% | 2854 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 84% | 56,681 psi | 89% | 2831 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 55,085 psi | 86% | 2831 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 55,767 psi | 87% | 2782 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 54,650 psi | 86% | 2890 fps | 99.2% |
| Somchem S361 | <<locked>> | 88% | 55,056 psi | 86% | 2818 fps | 97.7% |
| Somchem S365 | <<locked>> | 86% | 54,389 psi | 85% | 2854 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 56,028 psi | 88% | 2874 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 82% | 56,594 psi | 89% | 2776 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 55,376 psi | 87% | 2831 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 54,926 psi | 86% | 2844 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 84% | 54,926 psi | 86% | 2844 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 54,781 psi | 86% | 2884 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 56,623 psi | 89% | 2986 fps | 98.3% |
| Vihtavuori N565 | <<locked>> | 98% | 57,348 psi | 90% | 2976 fps | 98.6% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 53,461 psi | 84% | 2966 fps | 96.8% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 54,433 psi | 85% | 2792 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 56,797 psi | 89% | 2913 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 96% | 55,999 psi | 88% | 3035 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 55,216 psi | 87% | 2858 fps | 99.1% |
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% | 38,696 psi | 61% | 2543 fps | 98.3% |
| Accurate 4350 | <<locked>> | 80% | 49,792 psi | 78% | 2769 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 40,466 psi | 63% | 2690 fps | 95.1% |
| Accurate MAGPRO | 59.4 gr | 86% | 46,325 psi | 73% | 2802 fps | 95.4% |
| ADI AR 2209 | <<locked>> | 80% | 41,075 psi | 64% | 2638 fps | 96.4% |
| ADI AR 2213 | <<locked>> | 84% | 41,698 psi | 65% | 2680 fps | 95.1% |
| ADI AR 2217 | <<locked>> | 94% | 43,033 psi | 67% | 2703 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 88% | 33,243 psi | 52% | 2520 fps | 95.4% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 41,365 psi | 65% | 2638 fps | 96.5% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 41,365 psi | 65% | 2638 fps | 96.5% |
| Alliant Reloder-16 | <<locked>> | 80% | 46,456 psi | 73% | 2759 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 53,258 psi | 83% | 2874 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 41,031 psi | 64% | 2635 fps | 96.5% |
| Alliant Reloder-22 | <<locked>> | 80% | 37,405 psi | 59% | 2592 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 36,303 psi | 57% | 2559 fps | 99.9% |
| Alliant Reloder-25 | <<locked>> | 80% | 32,169 psi | 50% | 2484 fps | 97% |
| Alliant Reloder-26 | <<locked>> | 80% | 39,494 psi | 62% | 2700 fps | 99.5% |
| Bofors RP15 | <<locked>> | 82% | 37,318 psi | 58% | 2589 fps | 95.2% |
| Bofors RP30 | <<locked>> | 90% | 39,784 psi | 62% | 2677 fps | 95.4% |
| Bofors RP5 | <<locked>> | 80% | 37,405 psi | 59% | 2592 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 51,430 psi | 81% | 2756 fps | 99.3% |
| Hodgdon H1000 | <<locked>> | 88% | 38,943 psi | 61% | 2615 fps | 95% |
| Hodgdon H414 | <<locked>> | 80% | 50,299 psi | 79% | 2805 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 80% | 52,344 psi | 82% | 2808 fps | 99% |
| Hodgdon H4831 | <<locked>> | 84% | 44,382 psi | 70% | 2687 fps | 95.3% |
| Hodgdon H4831 SC | 55.1 gr | 84% | 43,540 psi | 68% | 2667 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 44,614 psi | 70% | 2654 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 37,159 psi | 58% | 2664 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 49,617 psi | 78% | 2828 fps | 99.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,340 psi | 44% | 1608 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 46,615 psi | 73% | 2690 fps | 98.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 51,996 psi | 81% | 2769 fps | 99.5% |
| IMR 4831 | <<locked>> | 80% | 47,007 psi | 74% | 2710 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 43,352 psi | 68% | 2628 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 86% | 42,960 psi | 67% | 2720 fps | 95.6% |
| IMR 8133 Enduron | <<locked>> | 98% | 40,364 psi | 63% | 2710 fps | 95.2% |
| Lovex S065 | <<locked>> | 80% | 50,517 psi | 79% | 2733 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 49,139 psi | 77% | 2730 fps | 99.4% |
| Lovex S071 | <<locked>> | 80% | 34,084 psi | 53% | 2438 fps | 97% |
| Norma 204 | <<locked>> | 80% | 46,514 psi | 73% | 2726 fps | 97.6% |
| Norma 217 | <<locked>> | 92% | 34,084 psi | 53% | 2575 fps | 95.3% |
| Norma MRP | <<locked>> | 80% | 39,001 psi | 61% | 2657 fps | 97.4% |
| Norma URP | <<locked>> | 80% | 48,051 psi | 75% | 2749 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 40,190 psi | 63% | 2671 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 46,528 psi | 73% | 2740 fps | 99.5% |
| Ramshot Magnum | <<locked>> | 82% | 34,389 psi | 54% | 2513 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,979 psi | 45% | 1644 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 49,037 psi | 77% | 2785 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 46,557 psi | 73% | 2795 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 84% | 34,505 psi | 54% | 2589 fps | 95.9% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 45,934 psi | 72% | 2841 fps | 95.5% |
| Rottweil R 904 | <<locked>> | 80% | 42,337 psi | 66% | 2612 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 80% | 40,901 psi | 64% | 2628 fps | 96.6% |
| Rottweil R 907 | <<locked>> | 80% | 51,430 psi | 81% | 2756 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 50,517 psi | 79% | 2733 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 49,139 psi | 77% | 2730 fps | 99.4% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 49,632 psi | 78% | 2684 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 40,553 psi | 64% | 2625 fps | 96.5% |
| Somchem S361 | <<locked>> | 82% | 45,832 psi | 72% | 2657 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 45,426 psi | 71% | 2713 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 41,713 psi | 65% | 2615 fps | 97.6% |
| Vihtavuori N150 | <<locked>> | 80% | 53,330 psi | 84% | 2730 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 49,124 psi | 77% | 2733 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 36,303 psi | 57% | 2490 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 48,907 psi | 77% | 2746 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 40,872 psi | 64% | 2638 fps | 99.8% |
| Vihtavuori N560 | <<locked>> | 84% | 44,121 psi | 69% | 2753 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 88% | 42,308 psi | 66% | 2703 fps | 95.3% |
| Vihtavuori N568 | <<locked>> | 96% | 47,210 psi | 74% | 2848 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 47,906 psi | 75% | 2694 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 50,502 psi | 79% | 2808 fps | 99.5% |
| Winchester StaBALL HD | 53.6 gr | 80% | 32,909 psi | 52% | 2602 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 37,956 psi | 59% | 2536 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 73 powders for .270 WSM loaded with the .277 | 150gr | Nosler AccuBond Long Range. Hodgdon Retumbo delivers the highest muzzle velocity at 3,074 fps; across all powders the maximum-charge window runs from 1,798 fps to 3,074 fps. ADI AR 2217 gives the best case fill at 100 %, and 73 of the 73 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 1:9.5 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. Hodgdon H4831 SC, Winchester StaBALL HD, Accurate MAGPRO rank at the top here: for .270 WSM with the .277 | 150gr | Nosler AccuBond Long Range 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.