Load Specifications
Load data in caliber .270 WSM with .277 | 130gr | CutEdge MTH bullet and 81 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Vihtavuori N560 and Accurate High Country.
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% | 57,667 psi | 90% | 3018 fps | 99% |
| Accurate 3100 | <<locked>> | 98% | 57,682 psi | 90% | 3084 fps | 99.8% |
| Accurate 4350 | <<locked>> | 88% | 55,767 psi | 87% | 3077 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 54,563 psi | 86% | 3166 fps | 97.2% |
| Accurate MAGPRO | <<locked>> | 96% | 55,332 psi | 87% | 3163 fps | 96% |
| ADI AR 2208 | <<locked>> | 84% | 56,782 psi | 89% | 3031 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 55,448 psi | 87% | 3107 fps | 98.2% |
| ADI AR 2213 | <<locked>> | 98% | 56,826 psi | 89% | 3163 fps | 97.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 40,321 psi | 63% | 2874 fps | 96.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 54,752 psi | 86% | 3009 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 55,492 psi | 87% | 3123 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 56,681 psi | 89% | 3143 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 55,216 psi | 87% | 3097 fps | 98.2% |
| Alliant Reloder-22 | <<locked>> | 98% | 56,507 psi | 89% | 3163 fps | 98.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 57,290 psi | 90% | 3146 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,980 psi | 78% | 3081 fps | 99.8% |
| Alliant Reloder-26 | <<locked>> | 94% | 53,795 psi | 84% | 3176 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 55,390 psi | 87% | 3143 fps | 98.2% |
| Bofors RP3 | <<locked>> | 82% | 56,086 psi | 88% | 3031 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 56,507 psi | 89% | 3163 fps | 98.5% |
| Bofors RP7 | <<locked>> | 86% | 54,911 psi | 86% | 3009 fps | 98.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 49,385 psi | 77% | 3012 fps | 96.4% |
| Hodgdon H380 | <<locked>> | 82% | 55,956 psi | 88% | 3045 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 56,855 psi | 89% | 3120 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 86% | 56,130 psi | 88% | 3071 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 96% | 57,000 psi | 89% | 3100 fps | 96.7% |
| Hodgdon H4831 SC | <<locked>> | 96% | 55,927 psi | 88% | 3084 fps | 96.5% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 55,941 psi | 88% | 3041 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,950 psi | 77% | 3123 fps | 97.9% |
| Hodgdon Superformance | <<locked>> | 88% | 56,956 psi | 89% | 3153 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,970 psi | 58% | 1926 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 56,304 psi | 88% | 3015 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 55,796 psi | 87% | 3045 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 86% | 56,057 psi | 88% | 3035 fps | 99.2% |
| IMR 4831 | <<locked>> | 90% | 55,622 psi | 87% | 3061 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 54,839 psi | 86% | 3028 fps | 96.4% |
| IMR 7828 SSC | <<locked>> | 98% | 54,578 psi | 86% | 3136 fps | 97% |
| Lovex S062 | <<locked>> | 82% | 57,043 psi | 89% | 3012 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 56,782 psi | 89% | 3038 fps | 99.8% |
| Lovex S070 | <<locked>> | 88% | 55,114 psi | 86% | 3031 fps | 99.3% |
| Lovex S071ᴾ | <<locked>> | 100% | 51,605 psi | 81% | 2986 fps | 99.4% |
| Norma 203B | <<locked>> | 82% | 57,624 psi | 90% | 3068 fps | 100% |
| Norma 204 | <<locked>> | 90% | 56,739 psi | 89% | 3100 fps | 98.2% |
| Norma MRP | <<locked>> | 96% | 56,449 psi | 88% | 3196 fps | 99.4% |
| Norma URP | <<locked>> | 90% | 57,305 psi | 90% | 3107 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 55,172 psi | 86% | 3156 fps | 97.4% |
| Ramshot Hunter | <<locked>> | 90% | 55,970 psi | 88% | 3107 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 53,316 psi | 84% | 3087 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,927 psi | 59% | 1975 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 55,535 psi | 87% | 3025 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 56,246 psi | 88% | 3136 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 55,187 psi | 86% | 3094 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 56,695 psi | 89% | 3173 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 49,356 psi | 77% | 3123 fps | 98.9% |
| Rottweil R 903 | <<locked>> | 84% | 56,217 psi | 88% | 3028 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 57,159 psi | 90% | 3074 fps | 97.4% |
| Rottweil R 905 | <<locked>> | 94% | 54,708 psi | 86% | 3087 fps | 98.2% |
| Rottweil R 907 | <<locked>> | 86% | 54,911 psi | 86% | 3009 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 88% | 56,782 psi | 89% | 3038 fps | 99.8% |
| Shooters World Precision | <<locked>> | 82% | 57,043 psi | 89% | 3012 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 55,114 psi | 86% | 3031 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 57,232 psi | 90% | 3084 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 56,028 psi | 88% | 2897 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 56,304 psi | 88% | 2986 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 57,696 psi | 90% | 3136 fps | 98.6% |
| Somchem S355 | <<locked>> | 84% | 55,811 psi | 87% | 3018 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 55,419 psi | 87% | 3009 fps | 96.3% |
| Somchem S365 | <<locked>> | 92% | 57,101 psi | 89% | 3110 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 55,463 psi | 87% | 3061 fps | 98.9% |
| Vihtavuori N150 | <<locked>> | 86% | 56,797 psi | 89% | 2989 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 55,579 psi | 87% | 3041 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 54,607 psi | 86% | 3031 fps | 98.5% |
| Vihtavuori N540 | <<locked>> | 82% | 57,624 psi | 90% | 2989 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 55,085 psi | 86% | 3051 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 56,652 psi | 89% | 3123 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 56,362 psi | 88% | 3179 fps | 96.9% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 52,344 psi | 82% | 3087 fps | 96.3% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 54,824 psi | 86% | 2999 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 57,072 psi | 89% | 3120 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 53,461 psi | 84% | 3225 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 55,027 psi | 86% | 3048 fps | 98.1% |
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 2700 | <<locked>> | 80% | 54,128 psi | 85% | 2959 fps | 98.5% |
| Accurate 3100 | <<locked>> | 82% | 34,809 psi | 55% | 2638 fps | 95.5% |
| Accurate 4350 | <<locked>> | 80% | 43,105 psi | 68% | 2848 fps | 99.2% |
| Accurate High Country | 62.2 gr | 90% | 47,747 psi | 75% | 3035 fps | 95.6% |
| Accurate MAGPRO | <<locked>> | 94% | 51,750 psi | 81% | 3097 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 50,328 psi | 79% | 2927 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 43,337 psi | 68% | 2867 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 94% | 49,966 psi | 78% | 3035 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 98% | 38,058 psi | 60% | 2815 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,547 psi | 81% | 2959 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,741 psi | 64% | 2841 fps | 99.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,398 psi | 73% | 2972 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 43,221 psi | 68% | 2864 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 90% | 43,888 psi | 69% | 2923 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,980 psi | 49% | 2605 fps | 97.8% |
| Alliant Reloder-25 | <<locked>> | 86% | 32,851 psi | 51% | 2671 fps | 95.1% |
| Alliant Reloder-26 | 57 gr | 80% | 33,431 psi | 52% | 2730 fps | 96.4% |
| Bofors RP15 | <<locked>> | 92% | 43,366 psi | 68% | 2910 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 52,794 psi | 83% | 2979 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 43,888 psi | 69% | 2923 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 45,934 psi | 72% | 2844 fps | 97.2% |
| Hodgdon H1000 | <<locked>> | 98% | 46,108 psi | 72% | 2943 fps | 95.5% |
| Hodgdon H380 | <<locked>> | 80% | 52,475 psi | 82% | 2986 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 80% | 44,208 psi | 69% | 2884 fps | 97.4% |
| Hodgdon H4350 | <<locked>> | 80% | 46,746 psi | 73% | 2897 fps | 96.7% |
| Hodgdon H4831 | <<locked>> | 92% | 50,082 psi | 78% | 2979 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 94% | 52,286 psi | 82% | 3018 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,711 psi | 61% | 2733 fps | 99.5% |
| Hodgdon Retumbo | <<locked>> | 94% | 40,712 psi | 64% | 2927 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 43,033 psi | 67% | 2890 fps | 96.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,891 psi | 44% | 1726 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 52,968 psi | 83% | 2963 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,321 psi | 65% | 2766 fps | 96% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,992 psi | 74% | 2867 fps | 97.8% |
| IMR 4831 | <<locked>> | 80% | 40,901 psi | 64% | 2789 fps | 98.9% |
| IMR 4955 Enduron | <<locked>> | 90% | 48,747 psi | 76% | 2917 fps | 95% |
| IMR 7828 SSC | <<locked>> | 94% | 47,964 psi | 75% | 3005 fps | 95.2% |
| Lovex S062 | <<locked>> | 80% | 53,693 psi | 84% | 2959 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 44,962 psi | 70% | 2822 fps | 98.6% |
| Lovex S070 | <<locked>> | 80% | 43,352 psi | 68% | 2808 fps | 97.3% |
| Lovex S071 | <<locked>> | 86% | 34,156 psi | 54% | 2621 fps | 95.2% |
| Norma 203B | <<locked>> | 80% | 54,302 psi | 85% | 3018 fps | 100% |
| Norma 204 | <<locked>> | 82% | 43,685 psi | 68% | 2854 fps | 95.3% |
| Norma MRP | <<locked>> | 84% | 37,956 psi | 59% | 2818 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 41,974 psi | 66% | 2828 fps | 98.9% |
| Ramshot Grand | <<locked>> | 94% | 48,037 psi | 75% | 3018 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 40,683 psi | 64% | 2815 fps | 97.3% |
| Ramshot Magnum | <<locked>> | 92% | 40,480 psi | 63% | 2831 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,427 psi | 45% | 1765 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 52,127 psi | 82% | 2966 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,037 psi | 77% | 3025 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,438 psi | 67% | 2858 fps | 98.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,582 psi | 64% | 2861 fps | 98.4% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 37,898 psi | 59% | 2844 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 80% | 49,748 psi | 78% | 2923 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 47,674 psi | 75% | 2907 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 86% | 42,438 psi | 67% | 2851 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 45,934 psi | 72% | 2844 fps | 97.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,962 psi | 70% | 2822 fps | 98.6% |
| Shooters World Precision | <<locked>> | 80% | 53,693 psi | 84% | 2959 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 43,352 psi | 68% | 2808 fps | 97.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,314 psi | 79% | 2972 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,821 psi | 78% | 2805 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,121 psi | 69% | 2766 fps | 97.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 42,047 psi | 66% | 2841 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 49,559 psi | 78% | 2917 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 52,054 psi | 82% | 2949 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 38,769 psi | 61% | 2792 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 40,712 psi | 64% | 2779 fps | 95.7% |
| Vihtavuori N150 | <<locked>> | 80% | 47,398 psi | 74% | 2841 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,323 psi | 68% | 2825 fps | 99.1% |
| Vihtavuori N165 | <<locked>> | 88% | 40,001 psi | 63% | 2753 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 54,114 psi | 85% | 2940 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 42,888 psi | 67% | 2828 fps | 98.9% |
| Vihtavuori N555 | <<locked>> | 80% | 34,751 psi | 54% | 2694 fps | 97.9% |
| Vihtavuori N560 | 63.6 gr | 92% | 49,356 psi | 77% | 3048 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 98% | 49,240 psi | 77% | 3028 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,177 psi | 66% | 2785 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 44,208 psi | 69% | 2884 fps | 97.4% |
| Winchester StaBALL HD | <<locked>> | 80% | 27,891 psi | 44% | 2598 fps | 97.3% |
| Winchester Supreme 780 | <<locked>> | 88% | 42,366 psi | 66% | 2812 fps | 95.1% |
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 87 powders for .270 WSM loaded with the .277 | 130gr | CutEdge MTH. Winchester StaBALL HD delivers the highest muzzle velocity at 3,225 fps; across all powders the maximum-charge window runs from 1,926 fps to 3,225 fps. ADI AR 2217 gives the best case fill at 100 %, and 87 of the 87 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 57–90 %, 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. ADI AR 2217, ADI AR 2225, Alliant Reloder-23 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. Alliant Reloder-26, Vihtavuori N560, Accurate High Country rank at the top here: for .270 WSM with the .277 | 130gr | CutEdge MTH they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, Baschieri & Pellagri 109, Norma 217 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.