Load Specifications
Load data in caliber .270 WSM with .277 | 165gr | Nosler AccuBond Long Range bullet and 71 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 76, Hodgdon Retumbo and Winchester StaBALL HD.
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% | 57,566 psi | 90% | 2746 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 55,085 psi | 86% | 2717 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 54,897 psi | 86% | 2828 fps | 98.2% |
| ADI AR 2209 | <<locked>> | 90% | 57,435 psi | 90% | 2808 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 92% | 55,347 psi | 87% | 2815 fps | 99% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 53,432 psi | 84% | 2782 fps | 99% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 48,370 psi | 76% | 2759 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 54,621 psi | 86% | 2756 fps | 99.5% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 54,621 psi | 86% | 2756 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 84% | 54,447 psi | 85% | 2753 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 57,174 psi | 90% | 2799 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 92% | 55,985 psi | 88% | 2822 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 94% | 57,508 psi | 90% | 2792 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 56,333 psi | 88% | 2848 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 54,085 psi | 85% | 2831 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 56,449 psi | 88% | 2769 fps | 96.8% |
| Bofors RP15 | <<locked>> | 94% | 55,259 psi | 87% | 2808 fps | 99.6% |
| Bofors RP30ᴾ | <<locked>> | 100% | 56,463 psi | 88% | 2861 fps | 99.5% |
| Bofors RP5 | <<locked>> | 92% | 55,985 psi | 88% | 2822 fps | 99.7% |
| Bofors RP7 | <<locked>> | 82% | 56,260 psi | 88% | 2703 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 98% | 54,737 psi | 86% | 2805 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 82% | 55,492 psi | 87% | 2756 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 57,493 psi | 90% | 2759 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 90% | 55,361 psi | 87% | 2756 fps | 98.5% |
| Hodgdon H4831 SC | <<locked>> | 90% | 54,302 psi | 85% | 2740 fps | 98.4% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 55,274 psi | 87% | 2687 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 55,332 psi | 87% | 2923 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 55,216 psi | 87% | 2789 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,681 psi | 59% | 1706 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 57,087 psi | 89% | 2736 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 56,840 psi | 89% | 2713 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 54,795 psi | 86% | 2703 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 56,231 psi | 88% | 2736 fps | 98.7% |
| IMR 7828 SSC | <<locked>> | 94% | 57,116 psi | 90% | 2851 fps | 99.3% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 44,483 psi | 70% | 2684 fps | 97.6% |
| Lovex S065 | <<locked>> | 82% | 55,172 psi | 86% | 2677 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 56,826 psi | 89% | 2723 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 55,390 psi | 87% | 2713 fps | 100% |
| Norma 204 | <<locked>> | 84% | 54,737 psi | 86% | 2740 fps | 99.5% |
| Norma 217ᴾ | <<locked>> | 100% | 44,802 psi | 70% | 2713 fps | 99.4% |
| Norma MRP | <<locked>> | 90% | 55,898 psi | 88% | 2841 fps | 100% |
| Norma URP | <<locked>> | 84% | 56,028 psi | 88% | 2740 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 54,230 psi | 85% | 2822 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 84% | 54,665 psi | 86% | 2746 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 56,318 psi | 88% | 2812 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,609 psi | 61% | 1745 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 54,375 psi | 85% | 2733 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 55,216 psi | 87% | 2802 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 55,854 psi | 88% | 2920 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 55,027 psi | 86% | 2881 fps | 98.5% |
| Rottweil R 904 | <<locked>> | 88% | 55,405 psi | 87% | 2726 fps | 99% |
| Rottweil R 905 | <<locked>> | 90% | 57,217 psi | 90% | 2792 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 82% | 56,260 psi | 88% | 2703 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 82% | 55,172 psi | 86% | 2677 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 56,826 psi | 89% | 2723 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 57,522 psi | 90% | 2677 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 56,768 psi | 89% | 2792 fps | 99.8% |
| Somchem S361 | <<locked>> | 88% | 56,898 psi | 89% | 2723 fps | 98.6% |
| Somchem S365 | <<locked>> | 86% | 56,710 psi | 89% | 2746 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 54,795 psi | 86% | 2723 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 84% | 57,551 psi | 90% | 2726 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 57,029 psi | 89% | 2746 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 84% | 56,942 psi | 89% | 2736 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 56,985 psi | 89% | 2776 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 55,506 psi | 87% | 2835 fps | 98.8% |
| Vihtavuori N565 | <<locked>> | 96% | 56,101 psi | 88% | 2828 fps | 99% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 56,014 psi | 88% | 2881 fps | 98.2% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 56,420 psi | 88% | 2684 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 55,492 psi | 87% | 2756 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 55,317 psi | 87% | 2881 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 57,246 psi | 90% | 2759 fps | 99.7% |
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% | 40,437 psi | 63% | 2461 fps | 99.2% |
| Accurate 4350 | <<locked>> | 80% | 51,953 psi | 81% | 2671 fps | 100% |
| Accurate MAGPRO | <<locked>> | 82% | 42,714 psi | 67% | 2605 fps | 95.4% |
| ADI AR 2209 | <<locked>> | 80% | 42,569 psi | 67% | 2552 fps | 97.7% |
| ADI AR 2213 | <<locked>> | 80% | 38,450 psi | 60% | 2493 fps | 95.1% |
| ADI AR 2217 | <<locked>> | 90% | 39,668 psi | 62% | 2520 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 84% | 30,951 psi | 49% | 2352 fps | 95.5% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 43,163 psi | 68% | 2556 fps | 97.8% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 43,163 psi | 68% | 2556 fps | 97.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 48,443 psi | 76% | 2661 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 42,772 psi | 67% | 2549 fps | 97.8% |
| Alliant Reloder-22 | <<locked>> | 80% | 39,015 psi | 61% | 2510 fps | 97% |
| Alliant Reloder-23 | <<locked>> | 80% | 37,927 psi | 59% | 2474 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 33,402 psi | 52% | 2408 fps | 98.4% |
| Alliant Reloder-26 | <<locked>> | 80% | 41,437 psi | 65% | 2618 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 50,415 psi | 79% | 2667 fps | 95.4% |
| Bofors RP15 | <<locked>> | 80% | 36,651 psi | 57% | 2457 fps | 96% |
| Bofors RP30 | <<locked>> | 86% | 37,057 psi | 58% | 2500 fps | 95.5% |
| Bofors RP5 | <<locked>> | 80% | 39,015 psi | 61% | 2510 fps | 97% |
| Bofors RP7 | <<locked>> | 80% | 52,953 psi | 83% | 2651 fps | 99.8% |
| Hodgdon H1000 | <<locked>> | 84% | 35,984 psi | 56% | 2434 fps | 95% |
| Hodgdon H414 | <<locked>> | 80% | 52,199 psi | 82% | 2703 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 80% | 54,099 psi | 85% | 2707 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 80% | 40,669 psi | 64% | 2490 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 80% | 40,132 psi | 63% | 2480 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 46,238 psi | 72% | 2549 fps | 100% |
| Hodgdon Retumbo | 51.7 gr | 82% | 34,592 psi | 54% | 2484 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 51,619 psi | 81% | 2733 fps | 99.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,471 psi | 45% | 1522 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 48,153 psi | 75% | 2592 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 53,751 psi | 84% | 2667 fps | 99.9% |
| IMR 4831 | <<locked>> | 80% | 48,704 psi | 76% | 2612 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 42,264 psi | 66% | 2490 fps | 95.9% |
| IMR 7828 SSC | <<locked>> | 82% | 39,537 psi | 62% | 2526 fps | 95.6% |
| IMR 8133 Enduron | <<locked>> | 94% | 37,652 psi | 59% | 2536 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 52,228 psi | 82% | 2631 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 50,662 psi | 79% | 2628 fps | 99.9% |
| Lovex S071 | <<locked>> | 80% | 35,505 psi | 56% | 2356 fps | 98.2% |
| Norma 204 | <<locked>> | 80% | 48,385 psi | 76% | 2635 fps | 98.7% |
| Norma 217 | <<locked>> | 88% | 31,923 psi | 50% | 2408 fps | 95.5% |
| Norma MRP | <<locked>> | 80% | 40,654 psi | 64% | 2575 fps | 98.6% |
| Norma URP | <<locked>> | 80% | 49,777 psi | 78% | 2644 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 37,043 psi | 58% | 2484 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 48,472 psi | 76% | 2648 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 80% | 33,620 psi | 53% | 2385 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,153 psi | 46% | 1558 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 51,198 psi | 80% | 2687 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 48,472 psi | 76% | 2697 fps | 100% |
| ReloadSwiss RS 76 | 54 gr | 80% | 31,908 psi | 50% | 2411 fps | 95.9% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 42,366 psi | 66% | 2651 fps | 95.5% |
| Rottweil R 904 | <<locked>> | 80% | 43,976 psi | 69% | 2530 fps | 97% |
| Rottweil R 905 | <<locked>> | 80% | 42,511 psi | 67% | 2543 fps | 97.9% |
| Rottweil R 907 | <<locked>> | 80% | 52,953 psi | 83% | 2651 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 52,228 psi | 82% | 2631 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 50,662 psi | 79% | 2628 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 51,169 psi | 80% | 2582 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 42,163 psi | 66% | 2536 fps | 97.8% |
| Somchem S361 | <<locked>> | 80% | 44,672 psi | 70% | 2516 fps | 96.3% |
| Somchem S365 | <<locked>> | 80% | 47,326 psi | 74% | 2608 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 43,294 psi | 68% | 2526 fps | 98.7% |
| Vihtavuori N160 | <<locked>> | 80% | 51,155 psi | 80% | 2635 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 37,913 psi | 59% | 2411 fps | 97.1% |
| Vihtavuori N550 | <<locked>> | 80% | 50,749 psi | 80% | 2644 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 42,786 psi | 67% | 2549 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 40,567 psi | 64% | 2559 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 84% | 39,204 psi | 61% | 2520 fps | 95.3% |
| Vihtavuori N568 | <<locked>> | 92% | 43,526 psi | 68% | 2657 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 49,763 psi | 78% | 2592 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 52,199 psi | 82% | 2703 fps | 99.9% |
| Winchester StaBALL HD | 51.8 gr | 80% | 34,418 psi | 54% | 2526 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 39,523 psi | 62% | 2454 fps | 96.9% |
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 71 powders for .270 WSM loaded with the .277 | 165gr | Nosler AccuBond Long Range. Hodgdon Retumbo delivers the highest muzzle velocity at 2,923 fps; across all powders the maximum-charge window runs from 1,706 fps to 2,923 fps. ADI AR 2217 gives the best case fill at 100 %, and 71 of the 71 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 165.0 gr projectile in 0.277" calls for a 1:9.0 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. ReloadSwiss RS 76, Hodgdon Retumbo, Winchester StaBALL HD rank at the top here: for .270 WSM with the .277 | 165gr | 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.