Load Specifications
Load data in caliber .270 WSM with .277 | 90gr | 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 60, ReloadSwiss RS 70 and Alliant Reloder-17.
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 2015 | <<locked>> | 82% | 55,376 psi | 87% | 3422 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 55,651 psi | 87% | 3455 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 56,043 psi | 88% | 3507 fps | 100% |
| Accurate 4064 | <<locked>> | 88% | 55,463 psi | 87% | 3501 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 54,955 psi | 86% | 3563 fps | 98.5% |
| ADI AR 2206H | <<locked>> | 84% | 54,215 psi | 85% | 3507 fps | 99.2% |
| ADI AR 2208 | <<locked>> | 90% | 55,143 psi | 86% | 3504 fps | 98.9% |
| ADI Benchmark 8208 | <<locked>> | 84% | 56,275 psi | 88% | 3517 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 84% | 57,522 psi | 90% | 3507 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 57,508 psi | 90% | 3701 fps | 99.2% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 54,897 psi | 86% | 3527 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 55,724 psi | 87% | 3537 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 88% | 56,072 psi | 88% | 3560 fps | 99.1% |
| Alliant Reloder-16 | <<locked>> | 98% | 55,071 psi | 86% | 3615 fps | 98.9% |
| Alliant Reloder-17 | <<locked>> | 94% | 56,492 psi | 89% | 3661 fps | 99.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,149 psi | 68% | 3356 fps | 97.8% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 48,747 psi | 76% | 3547 fps | 97.1% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 57,667 psi | 90% | 3576 fps | 99% |
| Bofors RP3 | <<locked>> | 90% | 56,782 psi | 89% | 3560 fps | 99.8% |
| Hodgdon Benchmark | <<locked>> | 84% | 57,696 psi | 90% | 3497 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 56,420 psi | 88% | 3547 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 57,493 psi | 90% | 3563 fps | 98.4% |
| Hodgdon H414 | <<locked>> | 96% | 57,087 psi | 89% | 3606 fps | 96.5% |
| Hodgdon H4895 | <<locked>> | 84% | 54,737 psi | 86% | 3524 fps | 99.5% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 55,158 psi | 86% | 3537 fps | 99.6% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 54,143 psi | 85% | 3550 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,839 psi | 56% | 2274 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 55,709 psi | 87% | 3524 fps | 99.6% |
| IMR 3031 | <<locked>> | 84% | 54,650 psi | 86% | 3520 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 54,737 psi | 86% | 3488 fps | 99% |
| IMR 4166 Enduron | <<locked>> | 86% | 54,360 psi | 85% | 3448 fps | 95.7% |
| IMR 4831 | <<locked>> | 98% | 55,100 psi | 86% | 3547 fps | 98.6% |
| IMR 4895 | <<locked>> | 88% | 57,421 psi | 90% | 3596 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 84% | 56,275 psi | 88% | 3517 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 84% | 54,505 psi | 85% | 3491 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 56,681 psi | 89% | 3488 fps | 99.5% |
| Lovex S062 | <<locked>> | 88% | 55,013 psi | 86% | 3494 fps | 99.8% |
| Lovex S065 | <<locked>> | 94% | 54,607 psi | 86% | 3478 fps | 97.2% |
| Lovex S070 | <<locked>> | 96% | 55,608 psi | 87% | 3514 fps | 96.3% |
| Norma 201 | <<locked>> | 86% | 56,855 psi | 89% | 3520 fps | 99.9% |
| Norma 202 | <<locked>> | 86% | 57,014 psi | 89% | 3520 fps | 100% |
| Norma 203B | <<locked>> | 88% | 55,361 psi | 87% | 3543 fps | 99.3% |
| Norma URP | <<locked>> | 98% | 56,811 psi | 89% | 3602 fps | 98.7% |
| Ramshot Big Game | <<locked>> | 88% | 55,883 psi | 88% | 3563 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 98% | 55,782 psi | 87% | 3586 fps | 97.2% |
| Ramshot TAC | <<locked>> | 84% | 56,724 psi | 89% | 3517 fps | 97.8% |
| Ramshot Wild Boar | <<locked>> | 84% | 56,594 psi | 89% | 3547 fps | 99.4% |
| Ramshot X-Terminator | <<locked>> | 82% | 57,305 psi | 90% | 3510 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,332 psi | 57% | 2326 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 57,392 psi | 90% | 3530 fps | 97.1% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 56,289 psi | 88% | 3632 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 56,072 psi | 88% | 3668 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 54,346 psi | 85% | 3573 fps | 98.2% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 57,188 psi | 90% | 3661 fps | 98.4% |
| Rottweil R 901 | <<locked>> | 82% | 54,766 psi | 86% | 3458 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 57,406 psi | 90% | 3517 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 92% | 56,594 psi | 89% | 3547 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 94% | 54,607 psi | 86% | 3478 fps | 97.2% |
| Shooters World Match Rifle | <<locked>> | 84% | 54,505 psi | 85% | 3491 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 55,013 psi | 86% | 3494 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 96% | 55,608 psi | 87% | 3514 fps | 96.3% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 54,230 psi | 85% | 3540 fps | 99.2% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 55,666 psi | 87% | 3497 fps | 98% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 55,883 psi | 88% | 3527 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 57,508 psi | 90% | 3448 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 54,723 psi | 86% | 3386 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 54,723 psi | 86% | 3415 fps | 95.9% |
| Somchem S335 | <<locked>> | 86% | 57,319 psi | 90% | 3442 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 54,926 psi | 86% | 3484 fps | 99.2% |
| Somchem S355 | <<locked>> | 92% | 56,507 psi | 89% | 3540 fps | 99.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 55,114 psi | 86% | 3609 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 57,203 psi | 90% | 3412 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 57,638 psi | 90% | 3432 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 56,898 psi | 89% | 3481 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 57,638 psi | 90% | 3491 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 54,447 psi | 85% | 3458 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 96% | 55,709 psi | 87% | 3533 fps | 98.5% |
| Vihtavuori N530 | <<locked>> | 84% | 56,898 psi | 89% | 3517 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 88% | 56,014 psi | 88% | 3481 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 55,071 psi | 86% | 3537 fps | 98.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 47,790 psi | 75% | 3461 fps | 97.8% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 56,028 psi | 88% | 3504 fps | 99.8% |
| Winchester 748 | <<locked>> | 84% | 57,188 psi | 90% | 3573 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 57,087 psi | 89% | 3606 fps | 96.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,305 psi | 62% | 3353 fps | 97.6% |
| Winchester StaBALL Match | <<locked>> | 86% | 56,130 psi | 88% | 3540 fps | 99.7% |
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 2015 | <<locked>> | 80% | 52,098 psi | 82% | 3366 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 46,079 psi | 72% | 3284 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 52,315 psi | 82% | 3442 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 43,453 psi | 68% | 3268 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 42,076 psi | 66% | 3287 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 47,935 psi | 75% | 3379 fps | 98.2% |
| ADI AR 2208 | <<locked>> | 80% | 40,727 psi | 64% | 3189 fps | 95.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,777 psi | 78% | 3392 fps | 99.4% |
| Alliant AR-Comp | <<locked>> | 80% | 50,618 psi | 79% | 3396 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,801 psi | 69% | 3399 fps | 96.4% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 48,544 psi | 76% | 3399 fps | 98.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,915 psi | 64% | 3225 fps | 97.5% |
| Alliant Reloder-15 | <<locked>> | 80% | 43,729 psi | 69% | 3301 fps | 96.8% |
| Alliant Reloder-16 | <<locked>> | 88% | 40,770 psi | 64% | 3284 fps | 95.2% |
| Alliant Reloder-17 | 56.5 gr | 80% | 35,621 psi | 56% | 3166 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 94% | 36,158 psi | 57% | 3166 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 96% | 42,453 psi | 67% | 3392 fps | 95% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 47,224 psi | 74% | 3369 fps | 97.1% |
| Bofors RP3 | <<locked>> | 80% | 41,234 psi | 65% | 3235 fps | 97.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 51,314 psi | 80% | 3383 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 49,443 psi | 77% | 3419 fps | 99.6% |
| Hodgdon H380 | <<locked>> | 82% | 44,527 psi | 70% | 3301 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 94% | 53,417 psi | 84% | 3537 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 48,399 psi | 76% | 3396 fps | 98.7% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 35,694 psi | 56% | 3100 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 44,454 psi | 70% | 3353 fps | 98.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,905 psi | 42% | 2047 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 46,151 psi | 72% | 3330 fps | 98.3% |
| IMR 3031 | <<locked>> | 80% | 48,138 psi | 75% | 3406 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,772 psi | 67% | 3235 fps | 96.6% |
| IMR 4166 Enduron | <<locked>> | 84% | 51,242 psi | 80% | 3386 fps | 95% |
| IMR 4831 | <<locked>> | 88% | 40,176 psi | 63% | 3225 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 44,773 psi | 70% | 3337 fps | 97.6% |
| IMR 8208 XBR | <<locked>> | 80% | 49,777 psi | 78% | 3392 fps | 99.4% |
| Lovex D073.6 | <<locked>> | 80% | 48,022 psi | 75% | 3369 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 47,326 psi | 74% | 3301 fps | 98.2% |
| Lovex S062 | <<locked>> | 80% | 43,149 psi | 68% | 3248 fps | 98.4% |
| Lovex S065 | <<locked>> | 88% | 45,600 psi | 71% | 3291 fps | 95% |
| Lovex S070 | <<locked>> | 94% | 52,431 psi | 82% | 3451 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 47,311 psi | 74% | 3333 fps | 99.1% |
| Norma 202 | <<locked>> | 80% | 47,369 psi | 74% | 3343 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,178 psi | 68% | 3287 fps | 97.2% |
| Norma URP | <<locked>> | 88% | 41,524 psi | 65% | 3278 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 42,728 psi | 67% | 3291 fps | 96.9% |
| Ramshot Hunter | <<locked>> | 94% | 48,994 psi | 77% | 3451 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 49,922 psi | 78% | 3383 fps | 96.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 49,617 psi | 78% | 3415 fps | 98.5% |
| Ramshot X-Terminator | <<locked>> | 80% | 53,664 psi | 84% | 3442 fps | 99% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,224 psi | 43% | 2093 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 50,604 psi | 79% | 3402 fps | 95.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 46,122 psi | 72% | 3422 fps | 97.2% |
| ReloadSwiss RS 60 | 56.5 gr | 80% | 37,710 psi | 59% | 3248 fps | 98.4% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 44,237 psi | 69% | 3363 fps | 95.9% |
| ReloadSwiss RS 70 | 66 gr | 92% | 46,760 psi | 73% | 3438 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 51,677 psi | 81% | 3402 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,295 psi | 71% | 3278 fps | 98.7% |
| Rottweil R 903 | <<locked>> | 80% | 38,870 psi | 61% | 3166 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 88% | 45,600 psi | 71% | 3291 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,022 psi | 75% | 3369 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 43,149 psi | 68% | 3248 fps | 98.4% |
| Shooters World SW4350 | <<locked>> | 94% | 52,431 psi | 82% | 3451 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,349 psi | 62% | 3212 fps | 95.9% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 48,675 psi | 76% | 3360 fps | 96.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 46,499 psi | 73% | 3337 fps | 97.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,095 psi | 75% | 3281 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,422 psi | 63% | 3114 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 51,300 psi | 80% | 3346 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 47,921 psi | 75% | 3281 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 48,124 psi | 75% | 3353 fps | 98.2% |
| Somchem S355 | <<locked>> | 80% | 39,334 psi | 62% | 3169 fps | 96.6% |
| Somchem S365 | <<locked>> | 84% | 33,083 psi | 52% | 3087 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 53,853 psi | 84% | 3360 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 48,269 psi | 76% | 3274 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 44,614 psi | 70% | 3264 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,889 psi | 70% | 3261 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 37,449 psi | 59% | 3094 fps | 97.5% |
| Vihtavuori N160 | <<locked>> | 88% | 43,163 psi | 68% | 3278 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 50,111 psi | 79% | 3389 fps | 99.4% |
| Vihtavuori N540 | <<locked>> | 80% | 43,656 psi | 68% | 3245 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 88% | 42,801 psi | 67% | 3278 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 94% | 39,436 psi | 62% | 3268 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 35,636 psi | 56% | 3048 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 49,966 psi | 78% | 3442 fps | 99.8% |
| Winchester 760 | <<locked>> | 94% | 53,693 psi | 84% | 3540 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 96% | 34,679 psi | 54% | 3192 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 46,035 psi | 72% | 3340 fps | 98.4% |
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 107 powders for .270 WSM loaded with the .277 | 90gr | CutEdge ER Raptor. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,701 fps; across all powders the maximum-charge window runs from 2,274 fps to 3,701 fps. Accurate 3100 gives the best case fill at 100 %, and 107 of the 107 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 90.0 gr projectile in 0.277" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Reloder-19 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 60, ReloadSwiss RS 70, Alliant Reloder-17 rank at the top here: for .270 WSM with the .277 | 90gr | CutEdge ER Raptor they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 3100, ADI AR 2209, Alliant Reloder-19 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.