Load Specifications
Load data in caliber .270 WSM with .277 | 115gr | CutEdge ER Raptor bullet and 86 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-16 and Alliant Reloder-26.
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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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 82% | 56,101 psi | 88% | 3097 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 55,869 psi | 88% | 3133 fps | 97.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 54,041 psi | 85% | 3179 fps | 98.8% |
| Accurate 4064 | <<locked>> | 84% | 55,999 psi | 88% | 3150 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 55,970 psi | 88% | 3245 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 82% | 57,217 psi | 90% | 3219 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 54,868 psi | 86% | 3163 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 98% | 56,318 psi | 88% | 3268 fps | 96.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 57,479 psi | 90% | 3353 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 55,811 psi | 87% | 3192 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 55,999 psi | 88% | 3212 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 94% | 55,680 psi | 87% | 3291 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 90% | 57,305 psi | 90% | 3327 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 55,521 psi | 87% | 3251 fps | 96.9% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 52,866 psi | 83% | 3251 fps | 96.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 50,082 psi | 78% | 3196 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,976 psi | 69% | 3094 fps | 97.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 57,522 psi | 90% | 3406 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 57,174 psi | 90% | 3232 fps | 99.9% |
| Bofors RP3 | <<locked>> | 86% | 57,058 psi | 89% | 3212 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 52,866 psi | 83% | 3251 fps | 96.5% |
| Bofors RP7 | <<locked>> | 90% | 56,057 psi | 88% | 3176 fps | 97.8% |
| Hodgdon H380 | <<locked>> | 86% | 57,203 psi | 90% | 3222 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 92% | 57,682 psi | 90% | 3287 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 90% | 57,087 psi | 89% | 3235 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 56,304 psi | 88% | 3215 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 54,433 psi | 85% | 3209 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 54,012 psi | 85% | 3255 fps | 97.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,463 psi | 57% | 2024 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 55,274 psi | 87% | 3169 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 54,331 psi | 85% | 3143 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 84% | 57,058 psi | 89% | 3176 fps | 98.4% |
| IMR 4350 | <<locked>> | 94% | 56,724 psi | 89% | 3209 fps | 98% |
| IMR 4451 Enduron | <<locked>> | 90% | 57,334 psi | 90% | 3205 fps | 98.4% |
| IMR 4831 | <<locked>> | 94% | 56,057 psi | 88% | 3228 fps | 99.8% |
| IMR 4895 | <<locked>> | 84% | 57,392 psi | 90% | 3245 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 55,869 psi | 88% | 3130 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 54,897 psi | 86% | 3143 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 54,491 psi | 85% | 3150 fps | 99% |
| Lovex S070 | <<locked>> | 92% | 55,956 psi | 88% | 3199 fps | 98.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 45,368 psi | 71% | 3018 fps | 97.2% |
| Norma 201 | <<locked>> | 82% | 56,521 psi | 89% | 3163 fps | 100% |
| Norma 202 | <<locked>> | 82% | 56,913 psi | 89% | 3156 fps | 100% |
| Norma 203B | <<locked>> | 84% | 55,317 psi | 87% | 3199 fps | 100% |
| Norma 204 | <<locked>> | 94% | 57,522 psi | 90% | 3261 fps | 97% |
| Norma MRPᴾ | <<locked>> | 100% | 56,072 psi | 88% | 3343 fps | 98.4% |
| Norma URP | <<locked>> | 94% | 57,522 psi | 90% | 3274 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 84% | 55,941 psi | 88% | 3222 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 56,463 psi | 88% | 3271 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,347 psi | 59% | 2073 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 57,043 psi | 89% | 3202 fps | 98.9% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 56,898 psi | 89% | 3287 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 56,666 psi | 89% | 3320 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 55,477 psi | 87% | 3258 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 57,479 psi | 90% | 3343 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 84% | 57,203 psi | 90% | 3163 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 57,188 psi | 90% | 3209 fps | 100% |
| Rottweil R 905 | <<locked>> | 98% | 54,810 psi | 86% | 3238 fps | 96.9% |
| Rottweil R 907 | <<locked>> | 90% | 56,057 psi | 88% | 3176 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 90% | 54,491 psi | 85% | 3150 fps | 99% |
| Shooters World Precision | <<locked>> | 84% | 54,897 psi | 86% | 3143 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 55,956 psi | 88% | 3199 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 54,462 psi | 85% | 3205 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 55,738 psi | 87% | 3182 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 56,695 psi | 89% | 3081 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 57,522 psi | 90% | 3081 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 57,696 psi | 90% | 3153 fps | 98.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 54,317 psi | 85% | 3232 fps | 96.7% |
| Somchem S335 | <<locked>> | 82% | 56,797 psi | 89% | 3084 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 56,913 psi | 89% | 3202 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 56,956 psi | 89% | 3284 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 55,912 psi | 88% | 3219 fps | 97.8% |
| Vihtavuori N133 | <<locked>> | 82% | 57,029 psi | 89% | 3064 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 57,261 psi | 90% | 3120 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 57,188 psi | 90% | 3130 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 54,665 psi | 86% | 3120 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 56,260 psi | 88% | 3212 fps | 99.8% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 51,459 psi | 81% | 3123 fps | 96.6% |
| Vihtavuori N540 | <<locked>> | 84% | 55,593 psi | 87% | 3127 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 55,564 psi | 87% | 3219 fps | 99.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 56,144 psi | 88% | 3284 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 55,724 psi | 87% | 3173 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 57,682 psi | 90% | 3287 fps | 98.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 45,600 psi | 71% | 3248 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 55,811 psi | 87% | 3189 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 55,854 psi | 88% | 3205 fps | 96.8% |
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 2495 | <<locked>> | 80% | 52,707 psi | 83% | 3045 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 49,255 psi | 77% | 3012 fps | 96.2% |
| Accurate 3100 | <<locked>> | 90% | 39,146 psi | 61% | 2881 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 49,835 psi | 78% | 3048 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,884 psi | 59% | 2881 fps | 96.8% |
| ADI AR 2206H | <<locked>> | 80% | 53,838 psi | 84% | 3159 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 45,876 psi | 72% | 2992 fps | 99% |
| ADI AR 2209 | <<locked>> | 94% | 49,603 psi | 78% | 3140 fps | 95.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,154 psi | 79% | 3219 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,630 psi | 73% | 3028 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,530 psi | 78% | 3097 fps | 99.5% |
| Alliant Reloder-16 | 50.5 gr | 80% | 36,506 psi | 57% | 2874 fps | 96.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,104 psi | 64% | 3018 fps | 99.2% |
| Alliant Reloder-19 | <<locked>> | 94% | 49,066 psi | 77% | 3130 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 98% | 49,632 psi | 78% | 3189 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 82% | 29,269 psi | 46% | 2677 fps | 95% |
| Alliant Reloder-25 | <<locked>> | 96% | 39,160 psi | 61% | 2972 fps | 95.9% |
| Alliant Reloder-26 | 59.9 gr | 86% | 35,520 psi | 56% | 2923 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 53,606 psi | 84% | 3169 fps | 99.7% |
| Bofors RP3 | <<locked>> | 80% | 47,297 psi | 74% | 3045 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 49,632 psi | 78% | 3189 fps | 95.7% |
| Bofors RP7 | <<locked>> | 82% | 44,135 psi | 69% | 2946 fps | 95.1% |
| Hodgdon H380 | <<locked>> | 80% | 47,543 psi | 75% | 3048 fps | 98.6% |
| Hodgdon H414 | <<locked>> | 82% | 41,814 psi | 66% | 2976 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 84% | 47,529 psi | 74% | 3054 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,171 psi | 54% | 2769 fps | 97.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,937 psi | 80% | 3146 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 43,816 psi | 69% | 3048 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,485 psi | 43% | 1814 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 52,025 psi | 82% | 3117 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,211 psi | 76% | 3031 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,343 psi | 79% | 3051 fps | 97.2% |
| IMR 4350 | <<locked>> | 86% | 44,512 psi | 70% | 2976 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,656 psi | 67% | 2917 fps | 95.2% |
| IMR 4831 | <<locked>> | 80% | 36,347 psi | 57% | 2825 fps | 96.4% |
| IMR 4895 | <<locked>> | 80% | 50,807 psi | 80% | 3130 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 52,591 psi | 82% | 3074 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 48,834 psi | 77% | 3038 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,741 psi | 64% | 2874 fps | 96.2% |
| Lovex S070 | <<locked>> | 82% | 41,582 psi | 65% | 2910 fps | 95.2% |
| Lovex S071 | <<locked>> | 96% | 40,059 psi | 63% | 2904 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 53,200 psi | 83% | 3107 fps | 100% |
| Norma 202 | <<locked>> | 80% | 53,490 psi | 84% | 3104 fps | 100% |
| Norma 203B | <<locked>> | 80% | 48,936 psi | 77% | 3084 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 50,415 psi | 79% | 3133 fps | 95.4% |
| Norma MRP | <<locked>> | 92% | 43,134 psi | 68% | 3081 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 37,362 psi | 59% | 2867 fps | 96.5% |
| Ramshot Big Game | <<locked>> | 80% | 48,965 psi | 77% | 3100 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 82% | 38,624 psi | 61% | 2907 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,934 psi | 44% | 1857 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,181 psi | 74% | 3018 fps | 97.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 53,113 psi | 83% | 3222 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,482 psi | 68% | 3081 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,246 psi | 58% | 2887 fps | 96.2% |
| ReloadSwiss RS 70 | 55.2 gr | 80% | 36,245 psi | 57% | 2881 fps | 95.1% |
| Rottweil R 902 | <<locked>> | 80% | 50,865 psi | 80% | 3058 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,744 psi | 70% | 2986 fps | 99.6% |
| Rottweil R 905 | <<locked>> | 94% | 48,138 psi | 75% | 3114 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 82% | 44,135 psi | 69% | 2946 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,741 psi | 64% | 2874 fps | 96.2% |
| Shooters World Precision | <<locked>> | 80% | 48,834 psi | 77% | 3038 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 41,582 psi | 65% | 2910 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,020 psi | 71% | 3028 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 52,272 psi | 82% | 3123 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 53,505 psi | 84% | 3031 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,397 psi | 71% | 2887 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 42,424 psi | 66% | 2864 fps | 95.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 47,776 psi | 75% | 3107 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 53,534 psi | 84% | 3031 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 44,817 psi | 70% | 2982 fps | 99.5% |
| Somchem S365 | <<locked>> | 80% | 34,040 psi | 53% | 2825 fps | 98.7% |
| Somchem S385 | <<locked>> | 92% | 46,398 psi | 73% | 3041 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 80% | 53,824 psi | 84% | 3015 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 50,691 psi | 79% | 3022 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 50,778 psi | 80% | 3028 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,801 psi | 67% | 2907 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 38,551 psi | 60% | 2861 fps | 96.8% |
| Vihtavuori N165 | <<locked>> | 98% | 48,254 psi | 76% | 3061 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 49,313 psi | 77% | 3022 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,377 psi | 60% | 2867 fps | 96.5% |
| Vihtavuori N555 | <<locked>> | 82% | 32,111 psi | 50% | 2766 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,855 psi | 59% | 2828 fps | 98.7% |
| Winchester 760 | <<locked>> | 82% | 42,003 psi | 66% | 2979 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 86% | 29,486 psi | 46% | 2769 fps | 95.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 52,518 psi | 82% | 3136 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 48,689 psi | 76% | 3074 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 103 powders for .270 WSM loaded with the .277 | 115gr | CutEdge ER Raptor. Alliant Reloder-26 delivers the highest muzzle velocity at 3,406 fps; across all powders the maximum-charge window runs from 2,024 fps to 3,406 fps. Accurate 3100 gives the best case fill at 100 %, and 103 of the 103 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 115.0 gr projectile in 0.277" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2213 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 70, Alliant Reloder-16, Alliant Reloder-26 rank at the top here: for .270 WSM with the .277 | 115gr | CutEdge ER Raptor they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2213, Hodgdon H1000 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.