Load Specifications
Load data in caliber .270 WSM with .277 | 112gr | Hasler ARIETE bullet and 82 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-16, ReloadSwiss RS 70 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% | 56,927 psi | 89% | 3153 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 56,695 psi | 89% | 3192 fps | 97.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 55,274 psi | 87% | 3238 fps | 98.9% |
| Accurate 4064 | <<locked>> | 84% | 57,000 psi | 89% | 3205 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 57,072 psi | 89% | 3304 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 86% | 55,651 psi | 87% | 3222 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 98% | 57,319 psi | 90% | 3327 fps | 97% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 54,679 psi | 86% | 3346 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 56,550 psi | 89% | 3248 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 56,797 psi | 89% | 3271 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 56,768 psi | 89% | 3353 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 54,520 psi | 85% | 3327 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 56,463 psi | 88% | 3310 fps | 97% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 54,012 psi | 85% | 3310 fps | 96.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 51,053 psi | 80% | 3251 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,889 psi | 70% | 3153 fps | 97.8% |
| Alliant Reloder-26 | <<locked>> | 98% | 54,708 psi | 86% | 3399 fps | 99.8% |
| Bofors RP3 | <<locked>> | 84% | 54,447 psi | 85% | 3212 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 54,012 psi | 85% | 3310 fps | 96.7% |
| Bofors RP7 | <<locked>> | 90% | 56,869 psi | 89% | 3238 fps | 97.9% |
| Hodgdon H380 | <<locked>> | 84% | 54,708 psi | 86% | 3225 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 90% | 54,882 psi | 86% | 3284 fps | 98.2% |
| Hodgdon H4350 | <<locked>> | 88% | 54,737 psi | 86% | 3238 fps | 96.9% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 57,421 psi | 90% | 3274 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 55,216 psi | 87% | 3261 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 54,926 psi | 86% | 3314 fps | 97.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,593 psi | 57% | 2067 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 55,912 psi | 88% | 3225 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 55,245 psi | 87% | 3202 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 84% | 57,740 psi | 90% | 3232 fps | 98.5% |
| IMR 4350 | <<locked>> | 94% | 57,595 psi | 90% | 3264 fps | 98.1% |
| IMR 4451 Enduron | <<locked>> | 88% | 54,839 psi | 86% | 3205 fps | 98% |
| IMR 4831 | <<locked>> | 94% | 57,000 psi | 89% | 3284 fps | 99.9% |
| IMR 4895 | <<locked>> | 82% | 54,853 psi | 86% | 3248 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 56,579 psi | 89% | 3189 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 55,782 psi | 87% | 3202 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 55,332 psi | 87% | 3212 fps | 99.1% |
| Lovex S070 | <<locked>> | 92% | 56,681 psi | 89% | 3255 fps | 98.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 46,209 psi | 72% | 3071 fps | 97.3% |
| Norma 201 | <<locked>> | 82% | 57,261 psi | 90% | 3219 fps | 100% |
| Norma 202 | <<locked>> | 82% | 57,551 psi | 90% | 3212 fps | 100% |
| Norma 203B | <<locked>> | 84% | 56,115 psi | 88% | 3258 fps | 100% |
| Norma 204 | <<locked>> | 92% | 54,781 psi | 86% | 3258 fps | 96.4% |
| Norma MRPᴾ | <<locked>> | 100% | 57,392 psi | 90% | 3409 fps | 98.6% |
| Norma URP | <<locked>> | 92% | 55,129 psi | 86% | 3278 fps | 99.7% |
| Ramshot Big Game | <<locked>> | 84% | 56,826 psi | 89% | 3281 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 57,522 psi | 90% | 3330 fps | 99.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,231 psi | 58% | 2113 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 54,346 psi | 85% | 3199 fps | 98.5% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 53,969 psi | 85% | 3320 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 56,391 psi | 88% | 3317 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 54,650 psi | 86% | 3337 fps | 99.6% |
| Rottweil R 902 | <<locked>> | 82% | 54,534 psi | 85% | 3163 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 54,476 psi | 85% | 3209 fps | 100% |
| Rottweil R 905 | <<locked>> | 98% | 55,869 psi | 88% | 3301 fps | 97% |
| Rottweil R 907 | <<locked>> | 90% | 56,869 psi | 89% | 3238 fps | 97.9% |
| Shooters World Long Rifle | <<locked>> | 90% | 55,332 psi | 87% | 3212 fps | 99.1% |
| Shooters World Precision | <<locked>> | 84% | 55,782 psi | 87% | 3202 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 56,681 psi | 89% | 3255 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 55,593 psi | 87% | 3268 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 56,492 psi | 89% | 3238 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 57,522 psi | 90% | 3140 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 54,882 psi | 86% | 3087 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 55,201 psi | 87% | 3156 fps | 98.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 55,376 psi | 87% | 3291 fps | 96.9% |
| Somchem S335 | <<locked>> | 82% | 57,493 psi | 90% | 3136 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 57,667 psi | 90% | 3258 fps | 100% |
| Somchem S365 | <<locked>> | 94% | 54,346 psi | 85% | 3284 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 56,869 psi | 89% | 3278 fps | 98% |
| Vihtavuori N135 | <<locked>> | 82% | 54,578 psi | 86% | 3127 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 54,650 psi | 86% | 3136 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 55,535 psi | 87% | 3176 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 57,203 psi | 90% | 3271 fps | 99.8% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 52,547 psi | 82% | 3182 fps | 96.8% |
| Vihtavuori N540 | <<locked>> | 84% | 56,536 psi | 89% | 3182 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 56,492 psi | 89% | 3278 fps | 99.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 57,232 psi | 90% | 3343 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 56,840 psi | 89% | 3232 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 55,187 psi | 86% | 3287 fps | 98.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 46,572 psi | 73% | 3307 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 56,797 psi | 89% | 3248 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 56,913 psi | 89% | 3264 fps | 97% |
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% | 53,577 psi | 84% | 3100 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 49,966 psi | 78% | 3068 fps | 96.3% |
| Accurate 3100 | <<locked>> | 90% | 40,089 psi | 63% | 2940 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 50,618 psi | 79% | 3104 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,595 psi | 60% | 2933 fps | 96.9% |
| ADI AR 2208 | <<locked>> | 80% | 46,586 psi | 73% | 3051 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 94% | 50,459 psi | 79% | 3199 fps | 95.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,865 psi | 80% | 3274 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,355 psi | 74% | 3084 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,270 psi | 79% | 3153 fps | 99.6% |
| Alliant Reloder-16 | 52.2 gr | 80% | 36,927 psi | 58% | 2927 fps | 96.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,800 psi | 66% | 3071 fps | 99.3% |
| Alliant Reloder-19 | <<locked>> | 94% | 49,864 psi | 78% | 3186 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 96% | 47,587 psi | 75% | 3182 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 82% | 29,733 psi | 47% | 2726 fps | 95.1% |
| Alliant Reloder-25 | <<locked>> | 94% | 37,507 psi | 59% | 2963 fps | 95.1% |
| Alliant Reloder-26 | 62 gr | 86% | 36,260 psi | 57% | 2979 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 48,008 psi | 75% | 3097 fps | 99.9% |
| Bofors RP5 | <<locked>> | 96% | 47,587 psi | 75% | 3182 fps | 95% |
| Bofors RP7 | <<locked>> | 82% | 44,918 psi | 70% | 3002 fps | 95.2% |
| Hodgdon H380 | <<locked>> | 80% | 48,066 psi | 75% | 3100 fps | 98.6% |
| Hodgdon H414 | <<locked>> | 82% | 42,540 psi | 67% | 3028 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 84% | 48,196 psi | 76% | 3114 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,795 psi | 55% | 2822 fps | 97.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 51,779 psi | 81% | 3202 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 44,744 psi | 70% | 3107 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,485 psi | 43% | 1850 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 52,692 psi | 83% | 3169 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,936 psi | 77% | 3091 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,126 psi | 80% | 3114 fps | 97.4% |
| IMR 4350 | <<locked>> | 86% | 45,339 psi | 71% | 3031 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,221 psi | 68% | 2969 fps | 95.3% |
| IMR 4831 | <<locked>> | 80% | 36,956 psi | 58% | 2874 fps | 96.4% |
| IMR 4895 | <<locked>> | 80% | 51,488 psi | 81% | 3186 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 53,359 psi | 84% | 3133 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 49,603 psi | 78% | 3097 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,379 psi | 65% | 2927 fps | 96.3% |
| Lovex S070 | <<locked>> | 82% | 42,119 psi | 66% | 2959 fps | 95.3% |
| Lovex S071 | <<locked>> | 94% | 38,580 psi | 60% | 2904 fps | 95% |
| Norma 201 | <<locked>> | 80% | 53,925 psi | 85% | 3163 fps | 100% |
| Norma 202 | <<locked>> | 80% | 54,244 psi | 85% | 3159 fps | 100% |
| Norma 203B | <<locked>> | 80% | 49,661 psi | 78% | 3140 fps | 99.8% |
| Norma 204 | <<locked>> | 90% | 51,285 psi | 80% | 3192 fps | 95.6% |
| Norma MRP | <<locked>> | 92% | 44,048 psi | 69% | 3140 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 38,014 psi | 60% | 2920 fps | 96.6% |
| Ramshot Big Game | <<locked>> | 80% | 49,719 psi | 78% | 3156 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 82% | 39,204 psi | 61% | 2956 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,934 psi | 44% | 1893 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,921 psi | 75% | 3074 fps | 97.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,222 psi | 69% | 3140 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,000 psi | 60% | 2940 fps | 96.3% |
| ReloadSwiss RS 70 | 57.1 gr | 80% | 36,767 psi | 58% | 2930 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 80% | 51,416 psi | 81% | 3110 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,455 psi | 71% | 3041 fps | 99.7% |
| Rottweil R 905 | <<locked>> | 94% | 49,298 psi | 77% | 3176 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 82% | 44,918 psi | 70% | 3002 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,379 psi | 65% | 2927 fps | 96.3% |
| Shooters World Precision | <<locked>> | 80% | 49,603 psi | 78% | 3097 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 42,119 psi | 66% | 2959 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,818 psi | 72% | 3084 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 53,026 psi | 83% | 3179 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 54,070 psi | 85% | 3087 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,919 psi | 72% | 2940 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 43,091 psi | 68% | 2917 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 48,834 psi | 77% | 3169 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 54,288 psi | 85% | 3087 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 45,498 psi | 71% | 3038 fps | 99.6% |
| Somchem S365 | <<locked>> | 80% | 34,635 psi | 54% | 2877 fps | 98.7% |
| Somchem S385 | <<locked>> | 90% | 44,280 psi | 69% | 3035 fps | 95% |
| Vihtavuori N135 | <<locked>> | 80% | 51,343 psi | 80% | 3074 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,503 psi | 81% | 3084 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,453 psi | 68% | 2959 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 39,131 psi | 61% | 2913 fps | 96.9% |
| Vihtavuori N165 | <<locked>> | 96% | 46,267 psi | 73% | 3061 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 49,908 psi | 78% | 3074 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,914 psi | 61% | 2920 fps | 96.6% |
| Vihtavuori N555 | <<locked>> | 82% | 32,735 psi | 51% | 2815 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,377 psi | 60% | 2881 fps | 98.8% |
| Winchester 760 | <<locked>> | 82% | 42,757 psi | 67% | 3035 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 86% | 30,168 psi | 47% | 2825 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 53,243 psi | 83% | 3189 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 49,632 psi | 78% | 3133 fps | 95.3% |
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 100 powders for .270 WSM loaded with the .277 | 112gr | Hasler ARIETE. Norma MRP delivers the highest muzzle velocity at 3,409 fps; across all powders the maximum-charge window runs from 2,067 fps to 3,409 fps. Accurate 3100 gives the best case fill at 100 %, and 100 of the 100 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 112.0 gr projectile in 0.277" calls for a 1:10.5 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. Alliant Reloder-16, ReloadSwiss RS 70, Alliant Reloder-26 rank at the top here: for .270 WSM with the .277 | 112gr | Hasler ARIETE they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, Bofors RP30, 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.