Load Specifications
Load data in caliber .270 WSM with .277 | 150gr | Peregrine VRG-3 bullet and 75 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Norma MRP and Vihtavuori N560.
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% | 57,043 psi | 89% | 2884 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 54,810 psi | 86% | 2864 fps | 100% |
| Accurate High Country | <<locked>> | 92% | 57,711 psi | 90% | 3028 fps | 99% |
| Accurate MAGPRO | <<locked>> | 92% | 54,795 psi | 86% | 2969 fps | 97.5% |
| ADI AR 2209 | <<locked>> | 90% | 54,375 psi | 85% | 2907 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 94% | 55,593 psi | 87% | 2963 fps | 98.5% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 50,198 psi | 79% | 2861 fps | 97.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 45,266 psi | 71% | 2835 fps | 99.4% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 54,679 psi | 86% | 2904 fps | 99.2% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 54,679 psi | 86% | 2904 fps | 99.2% |
| Alliant Reloder-16 | <<locked>> | 86% | 54,549 psi | 85% | 2907 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 55,666 psi | 87% | 2923 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 57,406 psi | 90% | 2949 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 94% | 55,883 psi | 88% | 2963 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 96% | 57,130 psi | 90% | 2940 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 56,347 psi | 88% | 2999 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 57,711 psi | 90% | 3031 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 57,159 psi | 90% | 2917 fps | 96.1% |
| Bofors RP15 | <<locked>> | 96% | 55,071 psi | 86% | 2949 fps | 99.3% |
| Bofors RP30ᴾ | <<locked>> | 100% | 52,518 psi | 82% | 2943 fps | 98.6% |
| Bofors RP5 | <<locked>> | 94% | 55,883 psi | 88% | 2963 fps | 99.4% |
| Bofors RP7 | <<locked>> | 84% | 56,362 psi | 88% | 2851 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 55,158 psi | 86% | 2949 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 84% | 55,521 psi | 87% | 2904 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 82% | 54,447 psi | 85% | 2858 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 92% | 55,695 psi | 87% | 2904 fps | 98% |
| Hodgdon H4831 SC | <<locked>> | 92% | 54,665 psi | 86% | 2887 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 55,172 psi | 86% | 2835 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 55,201 psi | 87% | 3068 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 84% | 55,651 psi | 87% | 2943 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,304 psi | 58% | 1804 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 57,667 psi | 90% | 2890 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 84% | 57,450 psi | 90% | 2871 fps | 99.9% |
| IMR 4831 | <<locked>> | 86% | 54,665 psi | 86% | 2851 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 56,710 psi | 89% | 2884 fps | 98.3% |
| IMR 7828 SSC | <<locked>> | 96% | 57,377 psi | 90% | 3002 fps | 98.9% |
| Lovex S065 | <<locked>> | 84% | 55,390 psi | 87% | 2828 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 56,971 psi | 89% | 2874 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 54,650 psi | 86% | 2851 fps | 100% |
| Norma 204 | <<locked>> | 86% | 54,998 psi | 86% | 2890 fps | 99.1% |
| Norma 217ᴾ | <<locked>> | 100% | 41,191 psi | 65% | 2769 fps | 98% |
| Norma MRP | <<locked>> | 92% | 55,840 psi | 88% | 2989 fps | 99.9% |
| Norma URP | <<locked>> | 86% | 56,159 psi | 88% | 2894 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 54,201 psi | 85% | 2963 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 86% | 54,650 psi | 86% | 2894 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 56,565 psi | 89% | 2959 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,348 psi | 60% | 1850 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 54,157 psi | 85% | 2881 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 55,593 psi | 87% | 2959 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 56,057 psi | 88% | 3068 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 50,981 psi | 80% | 2953 fps | 97% |
| Rottweil R 904 | <<locked>> | 90% | 55,738 psi | 87% | 2874 fps | 98.5% |
| Rottweil R 905 | <<locked>> | 92% | 57,305 psi | 90% | 2943 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 84% | 56,362 psi | 88% | 2851 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 84% | 55,390 psi | 87% | 2828 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 56,971 psi | 89% | 2874 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 57,348 psi | 90% | 2720 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 54,462 psi | 85% | 2779 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 56,884 psi | 89% | 2940 fps | 99.5% |
| Somchem S355 | <<locked>> | 82% | 57,725 psi | 90% | 2851 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 57,319 psi | 90% | 2867 fps | 98.1% |
| Somchem S365 | <<locked>> | 88% | 56,565 psi | 89% | 2897 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 54,665 psi | 86% | 2867 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 82% | 55,347 psi | 87% | 2772 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 54,418 psi | 85% | 2835 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 57,290 psi | 90% | 2894 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 86% | 57,043 psi | 89% | 2890 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 56,623 psi | 89% | 2923 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 55,535 psi | 87% | 2982 fps | 98.2% |
| Vihtavuori N565 | <<locked>> | 98% | 55,898 psi | 88% | 2969 fps | 98.5% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 52,286 psi | 82% | 2959 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 56,898 psi | 89% | 2835 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 55,753 psi | 87% | 2910 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 96% | 54,737 psi | 86% | 3028 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 57,653 psi | 90% | 2910 fps | 99.4% |
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% | 36,811 psi | 58% | 2523 fps | 97.8% |
| Accurate 4350 | <<locked>> | 80% | 48,138 psi | 75% | 2756 fps | 100% |
| Accurate High Country | <<locked>> | 82% | 41,553 psi | 65% | 2726 fps | 95.6% |
| Accurate MAGPRO | <<locked>> | 86% | 44,962 psi | 70% | 2789 fps | 95.1% |
| ADI AR 2209 | <<locked>> | 80% | 39,697 psi | 62% | 2625 fps | 96% |
| ADI AR 2213 | <<locked>> | 86% | 43,178 psi | 68% | 2730 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 94% | 41,742 psi | 65% | 2690 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 90% | 33,504 psi | 53% | 2546 fps | 95.6% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 40,118 psi | 63% | 2625 fps | 96.2% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 40,118 psi | 63% | 2625 fps | 96.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 45,165 psi | 71% | 2753 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 52,054 psi | 82% | 2871 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 39,798 psi | 62% | 2621 fps | 96.1% |
| Alliant Reloder-22 | <<locked>> | 82% | 38,247 psi | 60% | 2628 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 34,853 psi | 55% | 2543 fps | 99.8% |
| Alliant Reloder-25 | <<locked>> | 80% | 30,574 psi | 48% | 2454 fps | 96.2% |
| Alliant Reloder-26 | <<locked>> | 80% | 37,942 psi | 59% | 2680 fps | 99.3% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 53,882 psi | 84% | 2861 fps | 95.3% |
| Bofors RP15 | <<locked>> | 84% | 38,159 psi | 60% | 2625 fps | 95.6% |
| Bofors RP30 | <<locked>> | 92% | 40,741 psi | 64% | 2713 fps | 95.8% |
| Bofors RP5 | <<locked>> | 82% | 38,247 psi | 60% | 2628 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 50,024 psi | 78% | 2746 fps | 99.1% |
| Hodgdon H1000 | <<locked>> | 90% | 40,001 psi | 63% | 2654 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 80% | 49,008 psi | 77% | 2799 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 80% | 51,285 psi | 80% | 2805 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 84% | 43,105 psi | 68% | 2674 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 86% | 45,179 psi | 71% | 2717 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 43,178 psi | 68% | 2641 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 35,824 psi | 56% | 2641 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 48,443 psi | 76% | 2822 fps | 99.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,137 psi | 44% | 1614 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 45,353 psi | 71% | 2680 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 51,082 psi | 80% | 2769 fps | 99.5% |
| IMR 4831 | <<locked>> | 80% | 45,585 psi | 71% | 2700 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 44,817 psi | 70% | 2674 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 86% | 41,611 psi | 65% | 2707 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 49,298 psi | 77% | 2726 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 47,558 psi | 75% | 2717 fps | 99.3% |
| Lovex S071 | <<locked>> | 80% | 32,300 psi | 51% | 2411 fps | 96.4% |
| Norma 204 | <<locked>> | 80% | 45,324 psi | 71% | 2717 fps | 97.4% |
| Norma 217 | <<locked>> | 94% | 34,389 psi | 54% | 2602 fps | 95.5% |
| Norma MRP | 55.1 gr | 80% | 37,507 psi | 59% | 2638 fps | 97% |
| Norma URP | <<locked>> | 80% | 46,586 psi | 73% | 2736 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 41,553 psi | 65% | 2720 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 45,252 psi | 71% | 2733 fps | 99.4% |
| Ramshot Magnum | <<locked>> | 84% | 34,969 psi | 55% | 2543 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,732 psi | 45% | 1650 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 47,514 psi | 74% | 2772 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 45,455 psi | 71% | 2789 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 84% | 32,938 psi | 52% | 2559 fps | 95.1% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 44,512 psi | 70% | 2825 fps | 95.2% |
| Rottweil R 904 | <<locked>> | 80% | 41,205 psi | 65% | 2605 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 80% | 39,363 psi | 62% | 2612 fps | 96.2% |
| Rottweil R 907 | <<locked>> | 80% | 50,024 psi | 78% | 2746 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 49,298 psi | 77% | 2726 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 47,558 psi | 75% | 2717 fps | 99.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 54,201 psi | 85% | 2677 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 48,124 psi | 75% | 2674 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 39,015 psi | 61% | 2605 fps | 96.1% |
| Somchem S355 | <<locked>> | 80% | 54,433 psi | 85% | 2802 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 44,701 psi | 70% | 2648 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 43,772 psi | 69% | 2697 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 40,176 psi | 63% | 2598 fps | 97.3% |
| Vihtavuori N150 | <<locked>> | 80% | 51,880 psi | 81% | 2723 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 47,921 psi | 75% | 2730 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 34,882 psi | 55% | 2474 fps | 95.1% |
| Vihtavuori N550 | <<locked>> | 80% | 47,543 psi | 75% | 2736 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 39,218 psi | 61% | 2621 fps | 99.7% |
| Vihtavuori N560 | 57.9 gr | 84% | 42,888 psi | 67% | 2743 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 90% | 43,236 psi | 68% | 2736 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 98% | 48,863 psi | 77% | 2897 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 46,673 psi | 73% | 2684 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 49,240 psi | 77% | 2802 fps | 99.4% |
| Winchester StaBALL HD | 54.5 gr | 80% | 31,299 psi | 49% | 2569 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 80% | 36,550 psi | 57% | 2516 fps | 95% |
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 | 150gr | Peregrine VRG-3. Hodgdon Retumbo delivers the highest muzzle velocity at 3,068 fps; across all powders the maximum-charge window runs from 1,804 fps to 3,068 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 58–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.277" calls for a 1:10.5 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, Norma MRP, Vihtavuori N560 rank at the top here: for .270 WSM with the .277 | 150gr | Peregrine VRG-3 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.