Load Specifications
Load data in caliber .270 WSM with .277 | 130gr | Fox Classic Hunter bullet and 82 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Alliant Reloder-26 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 2700 | <<locked>> | 82% | 57,101 psi | 89% | 3002 fps | 98.8% |
| Accurate 3100 | <<locked>> | 98% | 56,869 psi | 89% | 3068 fps | 99.7% |
| Accurate 4350 | <<locked>> | 88% | 54,810 psi | 86% | 3058 fps | 100% |
| Accurate High Country | <<locked>> | 96% | 57,276 psi | 90% | 3209 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 84% | 56,130 psi | 88% | 3018 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 54,650 psi | 86% | 3087 fps | 97.9% |
| ADI AR 2213 | <<locked>> | 98% | 56,188 psi | 88% | 3143 fps | 97.1% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 55,129 psi | 86% | 3087 fps | 98% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 57,421 psi | 90% | 3048 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 57,609 psi | 90% | 3071 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 54,592 psi | 86% | 3107 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 55,970 psi | 88% | 3130 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 54,433 psi | 85% | 3081 fps | 98% |
| Alliant Reloder-22 | <<locked>> | 98% | 55,680 psi | 87% | 3146 fps | 98.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 56,463 psi | 88% | 3130 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,081 psi | 77% | 3061 fps | 99.7% |
| Alliant Reloder-26 | <<locked>> | 96% | 56,855 psi | 89% | 3225 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 54,621 psi | 86% | 3127 fps | 98% |
| Bofors RP3 | <<locked>> | 82% | 55,477 psi | 87% | 3018 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 55,680 psi | 87% | 3146 fps | 98.3% |
| Bofors RP7 | <<locked>> | 88% | 57,667 psi | 90% | 3051 fps | 99.1% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 48,515 psi | 76% | 2989 fps | 96.1% |
| Hodgdon H380 | <<locked>> | 82% | 55,332 psi | 87% | 3031 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 88% | 56,275 psi | 88% | 3104 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 86% | 55,593 psi | 87% | 3054 fps | 98.3% |
| Hodgdon H4831 | <<locked>> | 96% | 56,304 psi | 88% | 3084 fps | 96.4% |
| Hodgdon H4831 SC | <<locked>> | 96% | 55,216 psi | 87% | 3064 fps | 96.2% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 55,303 psi | 87% | 3031 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,269 psi | 76% | 3104 fps | 97.6% |
| Hodgdon Superformance | <<locked>> | 88% | 56,173 psi | 88% | 3136 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,883 psi | 58% | 1919 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 55,898 psi | 88% | 3005 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 54,969 psi | 86% | 3025 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 86% | 55,521 psi | 87% | 3022 fps | 99.1% |
| IMR 4831 | <<locked>> | 90% | 55,071 psi | 86% | 3048 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 57,479 psi | 90% | 3068 fps | 96.8% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 57,377 psi | 90% | 3179 fps | 97.4% |
| Lovex S062 | <<locked>> | 82% | 56,550 psi | 89% | 3002 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 56,246 psi | 88% | 3025 fps | 99.8% |
| Lovex S070 | <<locked>> | 90% | 57,667 psi | 90% | 3068 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,836 psi | 80% | 2969 fps | 99.2% |
| Norma 203B | <<locked>> | 82% | 56,927 psi | 89% | 3054 fps | 100% |
| Norma 204 | <<locked>> | 90% | 55,912 psi | 88% | 3084 fps | 98% |
| Norma MRP | <<locked>> | 96% | 55,274 psi | 87% | 3173 fps | 99.3% |
| Norma URP | <<locked>> | 90% | 56,405 psi | 88% | 3091 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 57,595 psi | 90% | 3077 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 54,230 psi | 85% | 3133 fps | 97.1% |
| Ramshot Hunter | <<locked>> | 90% | 55,216 psi | 87% | 3091 fps | 99.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 52,475 psi | 82% | 3068 fps | 98.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,840 psi | 59% | 1969 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 54,940 psi | 86% | 3009 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 55,288 psi | 87% | 3120 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 54,360 psi | 85% | 3077 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 55,898 psi | 88% | 3156 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 48,559 psi | 76% | 3100 fps | 98.7% |
| Rottweil R 903 | <<locked>> | 84% | 55,521 psi | 87% | 3012 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 56,391 psi | 88% | 3058 fps | 97.2% |
| Rottweil R 905 | <<locked>> | 96% | 57,348 psi | 90% | 3127 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 88% | 57,667 psi | 90% | 3051 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 88% | 56,246 psi | 88% | 3025 fps | 99.8% |
| Shooters World Precision | <<locked>> | 82% | 56,550 psi | 89% | 3002 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 57,667 psi | 90% | 3068 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 56,347 psi | 88% | 3064 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 55,361 psi | 87% | 2884 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 55,796 psi | 87% | 2972 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 56,855 psi | 89% | 3120 fps | 98.5% |
| Somchem S355 | <<locked>> | 84% | 55,172 psi | 86% | 3005 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 54,781 psi | 86% | 2992 fps | 96.1% |
| Somchem S365 | <<locked>> | 92% | 56,115 psi | 88% | 3094 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 54,679 psi | 86% | 3045 fps | 98.7% |
| Vihtavuori N150 | <<locked>> | 86% | 56,202 psi | 88% | 2976 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 54,723 psi | 86% | 3025 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 57,377 psi | 90% | 3071 fps | 98.8% |
| Vihtavuori N540 | <<locked>> | 82% | 57,029 psi | 89% | 2976 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 57,638 psi | 90% | 3087 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 56,043 psi | 88% | 3114 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 55,332 psi | 87% | 3156 fps | 96.6% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 51,706 psi | 81% | 3071 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 57,667 psi | 90% | 3038 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 56,275 psi | 88% | 3104 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 52,098 psi | 82% | 3205 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 54,346 psi | 85% | 3031 fps | 97.9% |
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 2700 | <<locked>> | 80% | 53,548 psi | 84% | 2946 fps | 98.4% |
| Accurate 3100 | <<locked>> | 82% | 34,243 psi | 54% | 2621 fps | 95.2% |
| Accurate 4350 | <<locked>> | 80% | 42,438 psi | 67% | 2831 fps | 99% |
| Accurate High Country | <<locked>> | 90% | 46,934 psi | 74% | 3015 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 49,966 psi | 78% | 2913 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 45,324 psi | 71% | 2910 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 94% | 49,284 psi | 77% | 3015 fps | 95.4% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 42,873 psi | 67% | 2851 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,184 psi | 80% | 2946 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 54,230 psi | 85% | 3018 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,335 psi | 63% | 2828 fps | 99% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,759 psi | 72% | 2959 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 42,467 psi | 67% | 2844 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 90% | 43,178 psi | 68% | 2907 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,632 psi | 48% | 2592 fps | 97.5% |
| Alliant Reloder-25 | <<locked>> | 88% | 34,272 psi | 54% | 2707 fps | 95.7% |
| Alliant Reloder-26 | 56.2 gr | 80% | 32,764 psi | 51% | 2707 fps | 96% |
| Bofors RP15 | <<locked>> | 92% | 42,627 psi | 67% | 2890 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 52,141 psi | 82% | 2966 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 43,178 psi | 68% | 2907 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 45,571 psi | 71% | 2831 fps | 97% |
| Hodgdon H1000 | <<locked>> | 98% | 45,585 psi | 71% | 2927 fps | 95.1% |
| Hodgdon H380 | <<locked>> | 80% | 52,054 psi | 82% | 2976 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 80% | 43,584 psi | 68% | 2867 fps | 97.1% |
| Hodgdon H4350 | <<locked>> | 80% | 46,180 psi | 72% | 2881 fps | 96.4% |
| Hodgdon H4831 | <<locked>> | 94% | 52,605 psi | 82% | 3022 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 94% | 51,561 psi | 81% | 3002 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,087 psi | 60% | 2717 fps | 99.4% |
| Hodgdon Retumbo | <<locked>> | 96% | 42,598 psi | 67% | 2969 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 42,496 psi | 67% | 2877 fps | 96.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,717 psi | 43% | 1719 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 52,591 psi | 82% | 2953 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,785 psi | 64% | 2749 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,427 psi | 73% | 2854 fps | 97.6% |
| IMR 4831 | <<locked>> | 80% | 40,451 psi | 63% | 2776 fps | 98.7% |
| IMR 4955 Enduron | <<locked>> | 92% | 50,952 psi | 80% | 2953 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 96% | 50,575 psi | 79% | 3054 fps | 95.9% |
| Lovex S062 | <<locked>> | 80% | 53,316 psi | 84% | 2949 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 44,585 psi | 70% | 2812 fps | 98.4% |
| Lovex S070 | <<locked>> | 80% | 42,801 psi | 67% | 2792 fps | 97.1% |
| Lovex S071 | <<locked>> | 88% | 35,621 psi | 56% | 2654 fps | 95.7% |
| Norma 203B | <<locked>> | 80% | 53,621 psi | 84% | 3002 fps | 100% |
| Norma 204 | <<locked>> | 82% | 43,163 psi | 68% | 2838 fps | 95% |
| Norma MRP | 58.7 gr | 86% | 39,871 psi | 62% | 2861 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 41,394 psi | 65% | 2812 fps | 98.8% |
| Ramshot Big Game | <<locked>> | 80% | 53,998 psi | 85% | 3022 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 47,340 psi | 74% | 2999 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 40,176 psi | 63% | 2799 fps | 97.1% |
| Ramshot Magnum | <<locked>> | 92% | 39,929 psi | 63% | 2812 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,442 psi | 45% | 1762 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,590 psi | 81% | 2949 fps | 99% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 48,370 psi | 76% | 3009 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,829 psi | 66% | 2844 fps | 98.7% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,059 psi | 63% | 2844 fps | 98.1% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 39,813 psi | 62% | 2890 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 80% | 49,110 psi | 77% | 2907 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 46,920 psi | 74% | 2884 fps | 95% |
| Rottweil R 905 | <<locked>> | 86% | 41,858 psi | 66% | 2831 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 45,571 psi | 71% | 2831 fps | 97% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,585 psi | 70% | 2812 fps | 98.4% |
| Shooters World Precision | <<locked>> | 80% | 53,316 psi | 84% | 2949 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 42,801 psi | 67% | 2792 fps | 97.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,676 psi | 78% | 2956 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,385 psi | 77% | 2795 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,555 psi | 68% | 2749 fps | 97.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 44,193 psi | 69% | 2884 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 49,124 psi | 77% | 2904 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 51,416 psi | 81% | 2933 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 38,116 psi | 60% | 2776 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 40,205 psi | 63% | 2762 fps | 95.5% |
| Vihtavuori N150 | <<locked>> | 80% | 46,804 psi | 73% | 2825 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,728 psi | 67% | 2808 fps | 99% |
| Vihtavuori N165 | <<locked>> | 90% | 42,018 psi | 66% | 2792 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 53,737 psi | 84% | 2930 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 42,496 psi | 67% | 2815 fps | 98.8% |
| Vihtavuori N555 | <<locked>> | 80% | 34,156 psi | 54% | 2674 fps | 97.6% |
| Vihtavuori N560 | 64.1 gr | 94% | 51,735 psi | 81% | 3091 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 98% | 48,312 psi | 76% | 3009 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,655 psi | 65% | 2769 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 43,584 psi | 68% | 2867 fps | 97.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 27,485 psi | 43% | 2579 fps | 96.9% |
| Winchester Supreme 780 | <<locked>> | 90% | 44,585 psi | 70% | 2854 fps | 95.6% |
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 82 powders for .270 WSM loaded with the .277 | 130gr | Fox Classic Hunter. Alliant Reloder-26 delivers the highest muzzle velocity at 3,225 fps; across all powders the maximum-charge window runs from 1,919 fps to 3,225 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 82 of the 82 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 130.0 gr projectile in 0.277" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-25, Bofors RP15 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. Norma MRP, Alliant Reloder-26, Vihtavuori N560 rank at the top here: for .270 WSM with the .277 | 130gr | Fox Classic Hunter 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.