Load Specifications
Load data in caliber .270 WSM with .277 | 115gr | Hasler Hunting 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, Alliant Reloder-17 and Norma MRP.
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 2700 | <<locked>> | 82% | 54,244 psi | 85% | 3117 fps | 97.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 56,623 psi | 89% | 3228 fps | 99.2% |
| Accurate 4064 | <<locked>> | 82% | 54,882 psi | 86% | 3136 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 54,940 psi | 86% | 3232 fps | 99.8% |
| Accurate High Country | <<locked>> | 98% | 57,029 psi | 89% | 3369 fps | 96.5% |
| ADI AR 2208 | <<locked>> | 86% | 56,753 psi | 89% | 3202 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 54,795 psi | 86% | 3251 fps | 96.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 55,999 psi | 88% | 3333 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 54,462 psi | 85% | 3176 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 54,679 psi | 86% | 3199 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 92% | 54,650 psi | 86% | 3281 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 88% | 55,898 psi | 88% | 3310 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 54,360 psi | 85% | 3241 fps | 96.9% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 55,419 psi | 87% | 3304 fps | 97.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 52,446 psi | 82% | 3241 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,006 psi | 72% | 3150 fps | 98.4% |
| Alliant Reloder-26 | <<locked>> | 98% | 56,521 psi | 89% | 3392 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 51,053 psi | 80% | 3222 fps | 96.2% |
| Bofors RP3 | <<locked>> | 84% | 55,608 psi | 87% | 3199 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 55,419 psi | 87% | 3304 fps | 97.3% |
| Bofors RP7 | <<locked>> | 88% | 54,694 psi | 86% | 3166 fps | 97.8% |
| Hodgdon H380 | <<locked>> | 84% | 55,666 psi | 87% | 3205 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 90% | 56,144 psi | 88% | 3271 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 88% | 55,898 psi | 88% | 3228 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 55,216 psi | 87% | 3205 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 56,478 psi | 89% | 3248 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 56,333 psi | 88% | 3304 fps | 98.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,738 psi | 58% | 2044 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 57,014 psi | 89% | 3209 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 56,304 psi | 88% | 3186 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 55,216 psi | 87% | 3156 fps | 98.4% |
| IMR 4350 | <<locked>> | 92% | 55,448 psi | 87% | 3199 fps | 98% |
| IMR 4451 Enduron | <<locked>> | 88% | 55,912 psi | 88% | 3192 fps | 98.4% |
| IMR 4831 | <<locked>> | 92% | 54,926 psi | 86% | 3215 fps | 99.8% |
| IMR 4895 | <<locked>> | 82% | 56,057 psi | 88% | 3232 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 57,566 psi | 90% | 3169 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 56,913 psi | 89% | 3186 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 56,449 psi | 88% | 3196 fps | 99.4% |
| Lovex S070 | <<locked>> | 90% | 54,578 psi | 86% | 3182 fps | 98.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,442 psi | 74% | 3064 fps | 97.8% |
| Norma 203B | <<locked>> | 84% | 57,319 psi | 90% | 3238 fps | 100% |
| Norma 204 | <<locked>> | 92% | 56,086 psi | 88% | 3248 fps | 97% |
| Norma MRP | <<locked>> | 98% | 55,085 psi | 86% | 3337 fps | 98.5% |
| Norma URP | <<locked>> | 92% | 56,420 psi | 88% | 3264 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 82% | 54,505 psi | 85% | 3205 fps | 100% |
| Ramshot Hunter | <<locked>> | 92% | 55,143 psi | 86% | 3258 fps | 99.1% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 48,878 psi | 77% | 3150 fps | 96.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,391 psi | 59% | 2090 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 55,463 psi | 87% | 3186 fps | 98.8% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 55,361 psi | 87% | 3307 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 54,447 psi | 85% | 3248 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 55,956 psi | 88% | 3327 fps | 99.8% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 45,339 psi | 71% | 3166 fps | 96.3% |
| Rottweil R 902 | <<locked>> | 82% | 55,637 psi | 87% | 3146 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 55,724 psi | 87% | 3192 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 56,666 psi | 89% | 3222 fps | 96.1% |
| Rottweil R 905 | <<locked>> | 98% | 57,188 psi | 90% | 3287 fps | 97.6% |
| Rottweil R 907 | <<locked>> | 88% | 54,694 psi | 86% | 3166 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 90% | 56,449 psi | 88% | 3196 fps | 99.4% |
| Shooters World Precision | <<locked>> | 84% | 56,913 psi | 89% | 3186 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 54,578 psi | 86% | 3182 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 56,840 psi | 89% | 3248 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 57,638 psi | 90% | 3222 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 55,985 psi | 88% | 3068 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 56,289 psi | 88% | 3140 fps | 98.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 56,739 psi | 89% | 3281 fps | 97.5% |
| Somchem S355 | <<locked>> | 86% | 55,550 psi | 87% | 3186 fps | 100% |
| Somchem S365 | <<locked>> | 94% | 55,898 psi | 88% | 3271 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 54,766 psi | 86% | 3209 fps | 97.9% |
| Vihtavuori N135 | <<locked>> | 82% | 55,782 psi | 87% | 3104 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 55,796 psi | 87% | 3117 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 56,724 psi | 89% | 3156 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 55,100 psi | 86% | 3199 fps | 99.8% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 53,853 psi | 84% | 3173 fps | 97.3% |
| Vihtavuori N540 | <<locked>> | 84% | 57,363 psi | 90% | 3159 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 54,491 psi | 85% | 3205 fps | 99.7% |
| Vihtavuori N555 | <<locked>> | 98% | 55,288 psi | 87% | 3274 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 54,563 psi | 86% | 3163 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 56,449 psi | 88% | 3278 fps | 98.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 48,037 psi | 75% | 3307 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 54,404 psi | 85% | 3189 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 2700 | <<locked>> | 80% | 50,937 psi | 80% | 3054 fps | 96.9% |
| Accurate 3100 | <<locked>> | 88% | 38,537 psi | 60% | 2871 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 51,793 psi | 81% | 3087 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,610 psi | 62% | 2923 fps | 97.5% |
| Accurate High Country | <<locked>> | 96% | 53,330 psi | 84% | 3304 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 47,326 psi | 74% | 3031 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 92% | 48,544 psi | 76% | 3127 fps | 95.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 52,098 psi | 82% | 3264 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,370 psi | 76% | 3071 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,314 psi | 80% | 3140 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,826 psi | 59% | 2920 fps | 97.3% |
| Alliant Reloder-17 | 56.5 gr | 80% | 42,873 psi | 67% | 3064 fps | 99.6% |
| Alliant Reloder-19 | <<locked>> | 92% | 48,095 psi | 75% | 3120 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 96% | 48,747 psi | 76% | 3179 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,732 psi | 45% | 2664 fps | 95% |
| Alliant Reloder-25 | <<locked>> | 92% | 36,289 psi | 57% | 2900 fps | 95% |
| Alliant Reloder-26 | 60.8 gr | 84% | 34,925 psi | 55% | 2913 fps | 95.4% |
| Bofors RP15 | <<locked>> | 98% | 47,863 psi | 75% | 3156 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 49,081 psi | 77% | 3084 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 48,747 psi | 76% | 3179 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 43,033 psi | 67% | 2930 fps | 95% |
| Hodgdon H380 | <<locked>> | 80% | 49,153 psi | 77% | 3087 fps | 99% |
| Hodgdon H414 | <<locked>> | 80% | 40,828 psi | 64% | 2959 fps | 95% |
| Hodgdon H4350 | <<locked>> | 82% | 46,412 psi | 73% | 3041 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,679 psi | 56% | 2812 fps | 98.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 52,997 psi | 83% | 3189 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 42,743 psi | 67% | 3031 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,456 psi | 43% | 1827 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 53,708 psi | 84% | 3153 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,777 psi | 78% | 3071 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 52,083 psi | 82% | 3100 fps | 97.8% |
| IMR 4350 | <<locked>> | 84% | 43,497 psi | 68% | 2963 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,121 psi | 69% | 2959 fps | 95.9% |
| IMR 4831 | <<locked>> | 80% | 37,884 psi | 59% | 2871 fps | 97.1% |
| IMR 4895 | <<locked>> | 80% | 52,562 psi | 82% | 3173 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 54,346 psi | 85% | 3114 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 50,618 psi | 79% | 3077 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 42,235 psi | 66% | 2917 fps | 96.9% |
| Lovex S070 | <<locked>> | 80% | 40,393 psi | 63% | 2890 fps | 95.1% |
| Lovex S071 | <<locked>> | 94% | 39,639 psi | 62% | 2900 fps | 95.8% |
| Norma 203B | <<locked>> | 80% | 50,705 psi | 79% | 3123 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 49,153 psi | 77% | 3117 fps | 95.4% |
| Norma MRP | 63.2 gr | 90% | 42,351 psi | 66% | 3071 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 38,754 psi | 61% | 2910 fps | 97.1% |
| Ramshot Big Game | <<locked>> | 80% | 50,865 psi | 80% | 3143 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 82% | 40,190 psi | 63% | 2953 fps | 95.8% |
| Ramshot Magnum | <<locked>> | 98% | 45,716 psi | 72% | 3084 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,108 psi | 44% | 1877 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,936 psi | 77% | 3064 fps | 97.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,339 psi | 71% | 3127 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,986 psi | 61% | 2933 fps | 97% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,652 psi | 59% | 2927 fps | 96% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 42,482 psi | 67% | 3094 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 80% | 52,431 psi | 82% | 3094 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 46,267 psi | 73% | 3025 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 94% | 53,417 psi | 84% | 3166 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 92% | 47,297 psi | 74% | 3104 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 43,033 psi | 67% | 2930 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,235 psi | 66% | 2917 fps | 96.9% |
| Shooters World Precision | <<locked>> | 80% | 50,618 psi | 79% | 3077 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,393 psi | 63% | 2890 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,876 psi | 73% | 3071 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 54,128 psi | 85% | 3163 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,862 psi | 73% | 2920 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,249 psi | 65% | 2848 fps | 95.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 46,862 psi | 73% | 3097 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 46,514 psi | 73% | 3025 fps | 99.8% |
| Somchem S365 | <<locked>> | 80% | 35,433 psi | 56% | 2867 fps | 99.1% |
| Somchem S385 | <<locked>> | 90% | 45,397 psi | 71% | 3028 fps | 95.7% |
| Vihtavuori N135 | <<locked>> | 80% | 52,460 psi | 82% | 3054 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 52,315 psi | 82% | 3061 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 44,193 psi | 69% | 2943 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,132 psi | 63% | 2907 fps | 97.5% |
| Vihtavuori N165 | <<locked>> | 94% | 44,338 psi | 69% | 2992 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 50,879 psi | 80% | 3058 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,856 psi | 62% | 2910 fps | 97.2% |
| Vihtavuori N555 | <<locked>> | 80% | 31,691 psi | 50% | 2753 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,247 psi | 62% | 2867 fps | 99.2% |
| Winchester 760 | <<locked>> | 80% | 41,046 psi | 64% | 2963 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 84% | 29,095 psi | 46% | 2762 fps | 96% |
| Winchester Supreme 780 | <<locked>> | 94% | 47,659 psi | 75% | 3064 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 81 powders for .270 WSM loaded with the .277 | 115gr | Hasler Hunting. Alliant Reloder-26 delivers the highest muzzle velocity at 3,392 fps; across all powders the maximum-charge window runs from 2,044 fps to 3,392 fps. Accurate 3100 gives the best case fill at 100 %, and 81 of the 81 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 115.0 gr projectile in 0.277" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-22, 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, Alliant Reloder-17, Norma MRP rank at the top here: for .270 WSM with the .277 | 115gr | Hasler Hunting 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.