Load Specifications
Load data in caliber .270 WSM with .277 | 110gr | Barnes TAC-X bullet and 87 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.
A valid access license is required to use the Personalized Load Calculator.
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% | 56,536 psi | 89% | 3176 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 56,507 psi | 89% | 3212 fps | 97.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 54,911 psi | 86% | 3258 fps | 98.8% |
| Accurate 4064 | <<locked>> | 84% | 56,579 psi | 89% | 3228 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 56,811 psi | 89% | 3323 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 86% | 55,274 psi | 87% | 3238 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 98% | 56,971 psi | 89% | 3346 fps | 96.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 54,172 psi | 85% | 3363 fps | 99.8% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 56,927 psi | 89% | 3340 fps | 96.9% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 56,927 psi | 89% | 3340 fps | 96.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 56,478 psi | 89% | 3274 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 56,681 psi | 89% | 3297 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 94% | 56,492 psi | 89% | 3376 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 88% | 54,273 psi | 85% | 3350 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 56,188 psi | 88% | 3333 fps | 96.8% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 53,650 psi | 84% | 3330 fps | 96.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 50,778 psi | 80% | 3274 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,628 psi | 70% | 3169 fps | 97.6% |
| Alliant Reloder-26 | <<locked>> | 98% | 54,476 psi | 85% | 3419 fps | 99.7% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 57,624 psi | 90% | 3307 fps | 99.9% |
| Bofors RP3 | <<locked>> | 84% | 54,259 psi | 85% | 3238 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 53,650 psi | 84% | 3330 fps | 96.4% |
| Bofors RP7 | <<locked>> | 90% | 56,753 psi | 89% | 3261 fps | 97.8% |
| Hodgdon H380 | <<locked>> | 84% | 54,331 psi | 85% | 3245 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 90% | 54,650 psi | 86% | 3304 fps | 98% |
| Hodgdon H4350 | <<locked>> | 88% | 54,317 psi | 85% | 3258 fps | 96.7% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 57,145 psi | 90% | 3294 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 55,042 psi | 86% | 3287 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 54,810 psi | 86% | 3337 fps | 97.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,593 psi | 57% | 2087 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 55,608 psi | 87% | 3245 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 54,897 psi | 86% | 3225 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 84% | 57,377 psi | 90% | 3251 fps | 98.3% |
| IMR 4350 | <<locked>> | 94% | 57,348 psi | 90% | 3287 fps | 97.9% |
| IMR 4451 Enduron | <<locked>> | 88% | 54,679 psi | 86% | 3228 fps | 97.8% |
| IMR 4831 | <<locked>> | 94% | 56,739 psi | 89% | 3307 fps | 99.8% |
| IMR 4895 | <<locked>> | 82% | 54,534 psi | 85% | 3268 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 56,260 psi | 88% | 3209 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 55,463 psi | 87% | 3225 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 55,216 psi | 87% | 3235 fps | 99% |
| Lovex S070 | <<locked>> | 92% | 56,492 psi | 89% | 3274 fps | 98.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 45,977 psi | 72% | 3091 fps | 97.1% |
| Norma 201 | <<locked>> | 82% | 56,927 psi | 89% | 3241 fps | 100% |
| Norma 202 | <<locked>> | 82% | 57,246 psi | 90% | 3235 fps | 100% |
| Norma 203B | <<locked>> | 84% | 56,043 psi | 88% | 3281 fps | 100% |
| Norma 204 | <<locked>> | 92% | 54,592 psi | 86% | 3278 fps | 96.2% |
| Norma MRPᴾ | <<locked>> | 100% | 56,971 psi | 89% | 3425 fps | 98.4% |
| Norma URP | <<locked>> | 92% | 54,926 psi | 86% | 3297 fps | 99.6% |
| Ramshot Big Game | <<locked>> | 84% | 56,565 psi | 89% | 3301 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 57,159 psi | 90% | 3353 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,217 psi | 58% | 2136 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 57,696 psi | 90% | 3281 fps | 98.8% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 57,363 psi | 90% | 3366 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 57,508 psi | 90% | 3406 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 56,347 psi | 88% | 3343 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 54,331 psi | 85% | 3356 fps | 99.5% |
| Rottweil R 902 | <<locked>> | 84% | 57,522 psi | 90% | 3241 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 57,696 psi | 90% | 3287 fps | 100% |
| Rottweil R 905 | <<locked>> | 98% | 55,550 psi | 87% | 3317 fps | 96.8% |
| Rottweil R 907 | <<locked>> | 90% | 56,753 psi | 89% | 3261 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 90% | 55,216 psi | 87% | 3235 fps | 99% |
| Shooters World Precision | <<locked>> | 84% | 55,463 psi | 87% | 3225 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 56,492 psi | 89% | 3274 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 55,158 psi | 86% | 3284 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 56,115 psi | 88% | 3261 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 57,217 psi | 90% | 3163 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 54,810 psi | 86% | 3110 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 55,027 psi | 86% | 3176 fps | 98% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 55,056 psi | 86% | 3310 fps | 96.7% |
| Somchem S335 | <<locked>> | 82% | 57,188 psi | 90% | 3163 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 57,508 psi | 90% | 3281 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 57,624 psi | 90% | 3363 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 56,782 psi | 89% | 3297 fps | 97.8% |
| Vihtavuori N133 | <<locked>> | 82% | 57,566 psi | 90% | 3143 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 57,725 psi | 90% | 3199 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 54,317 psi | 85% | 3156 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 55,143 psi | 86% | 3196 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 56,971 psi | 89% | 3294 fps | 99.7% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 52,228 psi | 82% | 3199 fps | 96.5% |
| Vihtavuori N540 | <<locked>> | 84% | 56,173 psi | 88% | 3205 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 56,217 psi | 88% | 3297 fps | 99.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 57,145 psi | 90% | 3366 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 56,550 psi | 89% | 3251 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 54,897 psi | 86% | 3307 fps | 98% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 46,398 psi | 73% | 3327 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 56,318 psi | 88% | 3268 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 56,463 psi | 88% | 3281 fps | 96.7% |
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% | 53,272 psi | 83% | 3123 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 49,647 psi | 78% | 3084 fps | 96.1% |
| Accurate 3100 | <<locked>> | 90% | 39,668 psi | 62% | 2953 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 50,372 psi | 79% | 3127 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,479 psi | 60% | 2953 fps | 96.7% |
| ADI AR 2208 | <<locked>> | 80% | 46,340 psi | 73% | 3071 fps | 99% |
| ADI AR 2209 | <<locked>> | 94% | 50,227 psi | 79% | 3219 fps | 95.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,705 psi | 79% | 3297 fps | 99.6% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 50,241 psi | 79% | 3215 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 50,241 psi | 79% | 3215 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,094 psi | 74% | 3104 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,140 psi | 79% | 3179 fps | 99.5% |
| Alliant Reloder-16 | 52.7 gr | 80% | 36,912 psi | 58% | 2946 fps | 96.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,481 psi | 65% | 3087 fps | 99.1% |
| Alliant Reloder-19 | <<locked>> | 94% | 49,617 psi | 78% | 3205 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 98% | 50,488 psi | 79% | 3268 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 84% | 31,314 psi | 49% | 2799 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 96% | 39,537 psi | 62% | 3041 fps | 95.8% |
| Alliant Reloder-26 | 62.5 gr | 86% | 36,085 psi | 57% | 2995 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 54,114 psi | 85% | 3248 fps | 99.7% |
| Bofors RP3 | <<locked>> | 80% | 47,863 psi | 75% | 3120 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 50,488 psi | 79% | 3268 fps | 95.7% |
| Bofors RP7 | <<locked>> | 82% | 44,686 psi | 70% | 3022 fps | 95% |
| Hodgdon H380 | <<locked>> | 80% | 47,993 psi | 75% | 3123 fps | 98.5% |
| Hodgdon H414 | <<locked>> | 82% | 42,395 psi | 66% | 3051 fps | 95% |
| Hodgdon H4350 | <<locked>> | 84% | 48,037 psi | 75% | 3130 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,548 psi | 54% | 2838 fps | 97.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 51,619 psi | 81% | 3228 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 44,527 psi | 70% | 3127 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,398 psi | 43% | 1870 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 52,388 psi | 82% | 3189 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,733 psi | 76% | 3110 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,865 psi | 80% | 3130 fps | 97.2% |
| IMR 4350 | <<locked>> | 86% | 44,991 psi | 71% | 3048 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,989 psi | 67% | 2989 fps | 95% |
| IMR 4831 | <<locked>> | 80% | 36,695 psi | 57% | 2894 fps | 96.2% |
| IMR 4895 | <<locked>> | 80% | 51,430 psi | 81% | 3212 fps | 99.8% |
| Lovex S060 | <<locked>> | 80% | 53,084 psi | 83% | 3153 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 49,313 psi | 77% | 3117 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,147 psi | 64% | 2946 fps | 96.1% |
| Lovex S070 | <<locked>> | 82% | 41,829 psi | 66% | 2979 fps | 95% |
| Lovex S071 | <<locked>> | 96% | 40,785 psi | 64% | 2979 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 53,693 psi | 84% | 3186 fps | 100% |
| Norma 202 | <<locked>> | 80% | 53,954 psi | 85% | 3186 fps | 100% |
| Norma 203B | <<locked>> | 80% | 49,603 psi | 78% | 3166 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 51,053 psi | 80% | 3212 fps | 95.3% |
| Norma MRP | <<locked>> | 92% | 43,772 psi | 69% | 3156 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 37,797 psi | 59% | 2940 fps | 96.4% |
| Ramshot Big Game | <<locked>> | 80% | 49,559 psi | 78% | 3176 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 41,510 psi | 65% | 3038 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,007 psi | 44% | 1916 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,877 psi | 75% | 3097 fps | 97.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 53,650 psi | 84% | 3304 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,918 psi | 69% | 3156 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,855 psi | 59% | 2959 fps | 96.1% |
| ReloadSwiss RS 70 | 59 gr | 82% | 39,044 psi | 61% | 3015 fps | 96% |
| Rottweil R 902 | <<locked>> | 80% | 51,184 psi | 80% | 3133 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,165 psi | 71% | 3061 fps | 99.6% |
| Rottweil R 905 | <<locked>> | 94% | 49,037 psi | 77% | 3196 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 82% | 44,686 psi | 70% | 3022 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,147 psi | 64% | 2946 fps | 96.1% |
| Shooters World Precision | <<locked>> | 80% | 49,313 psi | 77% | 3117 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 41,829 psi | 66% | 2979 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,513 psi | 71% | 3104 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 52,750 psi | 83% | 3202 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 53,882 psi | 84% | 3110 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,730 psi | 72% | 2963 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 43,018 psi | 67% | 2940 fps | 95.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 48,588 psi | 76% | 3189 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 53,998 psi | 85% | 3110 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 45,281 psi | 71% | 3058 fps | 99.5% |
| Somchem S365 | <<locked>> | 80% | 34,403 psi | 54% | 2894 fps | 98.6% |
| Somchem S385 | <<locked>> | 92% | 46,992 psi | 74% | 3114 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 80% | 54,244 psi | 85% | 3094 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 51,082 psi | 80% | 3097 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,256 psi | 80% | 3107 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,221 psi | 68% | 2979 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 39,073 psi | 61% | 2936 fps | 96.7% |
| Vihtavuori N165 | <<locked>> | 98% | 48,907 psi | 77% | 3136 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 49,821 psi | 78% | 3100 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,841 psi | 61% | 2940 fps | 96.5% |
| Vihtavuori N555 | <<locked>> | 82% | 32,445 psi | 51% | 2831 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,261 psi | 60% | 2897 fps | 98.6% |
| Winchester 760 | <<locked>> | 82% | 42,395 psi | 66% | 3051 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 86% | 29,892 psi | 47% | 2835 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 52,881 psi | 83% | 3209 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 49,574 psi | 78% | 3156 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 | 110gr | Barnes TAC-X. Norma MRP delivers the highest muzzle velocity at 3,425 fps; across all powders the maximum-charge window runs from 2,087 fps to 3,425 fps. Accurate 3100 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 110.0 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. ReloadSwiss RS 70, Alliant Reloder-16, Alliant Reloder-26 rank at the top here: for .270 WSM with the .277 | 110gr | Barnes TAC-X 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.