Load Specifications
Load data in caliber .270 WSM with .277 | 115gr | Nosler Custom Competition bullet and 70 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Norma MRP and Alliant Reloder-16.
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 3100 | <<locked>> | 96% | 55,129 psi | 86% | 3202 fps | 99.2% |
| Accurate 4350 | <<locked>> | 88% | 56,550 psi | 89% | 3255 fps | 99.9% |
| Accurate High Country | <<locked>> | 94% | 55,114 psi | 86% | 3333 fps | 96.4% |
| ADI AR 2208 | <<locked>> | 84% | 57,145 psi | 90% | 3212 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 55,724 psi | 87% | 3271 fps | 97.4% |
| ADI AR 2213 | <<locked>> | 98% | 57,392 psi | 90% | 3327 fps | 96.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 55,288 psi | 87% | 3186 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 55,506 psi | 87% | 3297 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 56,971 psi | 89% | 3323 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 55,521 psi | 87% | 3264 fps | 97.4% |
| Alliant Reloder-22 | <<locked>> | 98% | 57,101 psi | 89% | 3337 fps | 97.9% |
| Alliant Reloder-23 | <<locked>> | 98% | 54,230 psi | 85% | 3268 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 50,488 psi | 79% | 3245 fps | 99.4% |
| Alliant Reloder-26 | <<locked>> | 94% | 54,418 psi | 85% | 3353 fps | 99.9% |
| Bofors RP15ᴾ | <<locked>> | 100% | 55,811 psi | 87% | 3307 fps | 97.5% |
| Bofors RP3 | <<locked>> | 82% | 56,898 psi | 89% | 3212 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 57,101 psi | 89% | 3337 fps | 97.9% |
| Bofors RP7 | <<locked>> | 86% | 55,564 psi | 87% | 3182 fps | 98.2% |
| Hodgdon H380 | <<locked>> | 82% | 56,521 psi | 89% | 3219 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 88% | 57,232 psi | 90% | 3291 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 86% | 56,304 psi | 88% | 3238 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 56,492 psi | 89% | 3222 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 49,588 psi | 78% | 3281 fps | 96.9% |
| Hodgdon Superformance | <<locked>> | 88% | 57,435 psi | 90% | 3323 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,072 psi | 58% | 2064 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 56,681 psi | 89% | 3192 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 56,217 psi | 88% | 3212 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 86% | 56,362 psi | 88% | 3205 fps | 98.7% |
| IMR 4831 | <<locked>> | 90% | 56,391 psi | 88% | 3238 fps | 100% |
| IMR 7828 SSC | <<locked>> | 98% | 55,013 psi | 86% | 3297 fps | 96% |
| Lovex S062 | <<locked>> | 82% | 57,696 psi | 90% | 3196 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 57,624 psi | 90% | 3215 fps | 99.6% |
| Lovex S070 | <<locked>> | 88% | 55,593 psi | 87% | 3202 fps | 98.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 52,765 psi | 83% | 3159 fps | 99% |
| Norma 204 | <<locked>> | 90% | 57,043 psi | 89% | 3268 fps | 97.5% |
| Norma MRP | <<locked>> | 96% | 56,652 psi | 89% | 3360 fps | 98.9% |
| Norma URP | <<locked>> | 90% | 57,653 psi | 90% | 3281 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 55,579 psi | 87% | 3317 fps | 96.5% |
| Ramshot Hunter | <<locked>> | 90% | 56,463 psi | 88% | 3281 fps | 99.4% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 54,041 psi | 85% | 3251 fps | 98% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,985 psi | 60% | 2113 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 56,014 psi | 88% | 3196 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 56,478 psi | 89% | 3317 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 55,724 psi | 87% | 3264 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 57,058 psi | 89% | 3346 fps | 99.9% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 50,009 psi | 78% | 3278 fps | 98.1% |
| Rottweil R 903 | <<locked>> | 84% | 56,942 psi | 89% | 3209 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 57,551 psi | 90% | 3241 fps | 96.6% |
| Rottweil R 905 | <<locked>> | 94% | 55,172 psi | 86% | 3255 fps | 97.5% |
| Rottweil R 907 | <<locked>> | 86% | 55,564 psi | 87% | 3182 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 88% | 57,624 psi | 90% | 3215 fps | 99.6% |
| Shooters World Precision | <<locked>> | 82% | 57,696 psi | 90% | 3196 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 55,593 psi | 87% | 3202 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 57,450 psi | 90% | 3258 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 56,492 psi | 89% | 3074 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 56,927 psi | 89% | 3156 fps | 98.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 54,694 psi | 86% | 3248 fps | 97.4% |
| Somchem S355 | <<locked>> | 84% | 56,536 psi | 89% | 3202 fps | 100% |
| Somchem S365 | <<locked>> | 92% | 57,435 psi | 90% | 3287 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 56,173 psi | 88% | 3232 fps | 98.3% |
| Vihtavuori N150 | <<locked>> | 86% | 57,450 psi | 90% | 3166 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 55,999 psi | 88% | 3215 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 98% | 55,114 psi | 86% | 3196 fps | 97.8% |
| Vihtavuori N550 | <<locked>> | 88% | 55,506 psi | 87% | 3222 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 96% | 57,551 psi | 90% | 3307 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 56,579 psi | 89% | 3340 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 55,274 psi | 87% | 3173 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 57,537 psi | 90% | 3294 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 53,722 psi | 84% | 3402 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 55,550 psi | 87% | 3212 fps | 97.3% |
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 3100 | <<locked>> | 84% | 38,363 psi | 60% | 2861 fps | 95.7% |
| Accurate 4350 | <<locked>> | 80% | 44,150 psi | 69% | 3022 fps | 98.7% |
| Accurate High Country | <<locked>> | 92% | 51,605 psi | 81% | 3268 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 50,763 psi | 80% | 3097 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 88% | 46,586 psi | 73% | 3091 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 96% | 53,722 psi | 84% | 3258 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 52,257 psi | 82% | 3136 fps | 100% |
| Alliant Reloder-16 | 54.6 gr | 80% | 41,278 psi | 65% | 3005 fps | 98.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,847 psi | 73% | 3143 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 46,398 psi | 73% | 3081 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 92% | 47,340 psi | 74% | 3146 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,039 psi | 50% | 2766 fps | 97.1% |
| Alliant Reloder-25 | <<locked>> | 88% | 35,752 psi | 56% | 2884 fps | 95.2% |
| Alliant Reloder-26 | 60.3 gr | 80% | 34,418 psi | 54% | 2887 fps | 95.5% |
| Bofors RP15 | <<locked>> | 94% | 46,775 psi | 73% | 3133 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 53,563 psi | 84% | 3156 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 47,340 psi | 74% | 3146 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 46,543 psi | 73% | 3009 fps | 96.4% |
| Hodgdon H380 | <<locked>> | 80% | 53,272 psi | 83% | 3163 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 80% | 44,686 psi | 70% | 3045 fps | 96.5% |
| Hodgdon H4350 | <<locked>> | 80% | 47,166 psi | 74% | 3058 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,407 psi | 62% | 2897 fps | 99.1% |
| Hodgdon Retumbo | <<locked>> | 96% | 44,106 psi | 69% | 3150 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 43,830 psi | 69% | 3054 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,949 psi | 44% | 1850 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 53,417 psi | 84% | 3136 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,945 psi | 66% | 2923 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,340 psi | 74% | 3031 fps | 97.1% |
| IMR 4831 | <<locked>> | 80% | 41,785 psi | 65% | 2953 fps | 98.3% |
| IMR 7828 SSC | <<locked>> | 96% | 51,706 psi | 81% | 3232 fps | 95.1% |
| Lovex S062 | <<locked>> | 80% | 54,563 psi | 86% | 3143 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 45,861 psi | 72% | 2995 fps | 98% |
| Lovex S070 | <<locked>> | 80% | 44,251 psi | 69% | 2976 fps | 96.6% |
| Lovex S071 | <<locked>> | 88% | 37,362 psi | 59% | 2835 fps | 95.3% |
| Norma 204 | <<locked>> | 84% | 47,079 psi | 74% | 3074 fps | 95.1% |
| Norma MRP | 62.9 gr | 86% | 41,234 psi | 65% | 3038 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 42,772 psi | 67% | 2995 fps | 98.4% |
| Ramshot Grand | <<locked>> | 96% | 51,909 psi | 81% | 3245 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 41,394 psi | 65% | 2976 fps | 96.5% |
| Ramshot Magnum | <<locked>> | 94% | 44,309 psi | 69% | 3054 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,631 psi | 45% | 1896 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 52,678 psi | 83% | 3133 fps | 98.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,356 psi | 77% | 3199 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,366 psi | 68% | 3028 fps | 98.3% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,263 psi | 65% | 3022 fps | 97.6% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 41,278 psi | 65% | 3064 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 80% | 50,691 psi | 79% | 3104 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 51,010 psi | 80% | 3123 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 88% | 45,876 psi | 72% | 3071 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 46,543 psi | 73% | 3009 fps | 96.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,861 psi | 72% | 2995 fps | 98% |
| Shooters World Precision | <<locked>> | 80% | 54,563 psi | 86% | 3143 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 44,251 psi | 69% | 2976 fps | 96.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,792 psi | 80% | 3143 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,227 psi | 79% | 2976 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,933 psi | 70% | 2930 fps | 96.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 45,455 psi | 71% | 3064 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 50,444 psi | 79% | 3094 fps | 100% |
| Somchem S365 | <<locked>> | 80% | 39,595 psi | 62% | 2959 fps | 99.8% |
| Somchem S385 | <<locked>> | 86% | 44,164 psi | 69% | 2995 fps | 95.7% |
| Vihtavuori N150 | <<locked>> | 80% | 48,182 psi | 76% | 3012 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,990 psi | 69% | 2989 fps | 98.6% |
| Vihtavuori N165 | <<locked>> | 90% | 43,265 psi | 68% | 2966 fps | 95% |
| Vihtavuori N550 | <<locked>> | 80% | 43,714 psi | 69% | 2992 fps | 98.4% |
| Vihtavuori N555 | <<locked>> | 80% | 35,752 psi | 56% | 2858 fps | 97.2% |
| Vihtavuori N560 | <<locked>> | 94% | 53,272 psi | 83% | 3278 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,931 psi | 67% | 2949 fps | 99.8% |
| Winchester 760 | <<locked>> | 80% | 44,918 psi | 70% | 3048 fps | 96.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 29,022 psi | 45% | 2753 fps | 96.4% |
| Winchester Supreme 780 | <<locked>> | 90% | 45,861 psi | 72% | 3028 fps | 95% |
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 84 powders for .270 WSM loaded with the .277 | 115gr | Nosler Custom Competition. Winchester StaBALL HD delivers the highest muzzle velocity at 3,402 fps; across all powders the maximum-charge window runs from 2,064 fps to 3,402 fps. ADI AR 2217 gives the best case fill at 100 %, and 84 of the 84 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 1:14.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-25 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, Norma MRP, Alliant Reloder-16 rank at the top here: for .270 WSM with the .277 | 115gr | Nosler Custom Competition they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, Baschieri & Pellagri 109, Bofors RP30 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.