Load Specifications
Load data in caliber .270 WSM with .277 | 130gr | Rhino Penetrator bullet and 75 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Alliant Reloder-26 and Winchester StaBALL HD.
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% | 56,666 psi | 89% | 3054 fps | 99.7% |
| Accurate 4350 | <<locked>> | 86% | 54,694 psi | 86% | 3045 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 56,739 psi | 89% | 3192 fps | 97.6% |
| Accurate MAGPRO | <<locked>> | 96% | 57,464 psi | 90% | 3186 fps | 96.4% |
| ADI AR 2208 | <<locked>> | 82% | 55,129 psi | 86% | 2995 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 57,159 psi | 90% | 3123 fps | 98.4% |
| ADI AR 2213 | <<locked>> | 96% | 55,158 psi | 86% | 3120 fps | 96.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 42,279 psi | 66% | 2910 fps | 97.1% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 57,682 psi | 90% | 3127 fps | 98.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 56,710 psi | 89% | 3028 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 57,217 psi | 90% | 3140 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 55,056 psi | 86% | 3107 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 56,942 psi | 89% | 3117 fps | 98.4% |
| Alliant Reloder-22 | <<locked>> | 96% | 55,056 psi | 86% | 3127 fps | 98.3% |
| Alliant Reloder-23 | <<locked>> | 98% | 55,854 psi | 88% | 3114 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 51,938 psi | 81% | 3107 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 94% | 56,173 psi | 88% | 3205 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 57,435 psi | 90% | 3166 fps | 98.5% |
| Bofors RP30ᴾ | <<locked>> | 100% | 48,225 psi | 76% | 3028 fps | 96.1% |
| Bofors RP5 | <<locked>> | 96% | 55,056 psi | 86% | 3127 fps | 98.3% |
| Bofors RP7 | <<locked>> | 86% | 56,637 psi | 89% | 3025 fps | 99% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 51,184 psi | 80% | 3035 fps | 96.9% |
| Hodgdon H414 | <<locked>> | 86% | 55,347 psi | 87% | 3081 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 84% | 54,491 psi | 85% | 3031 fps | 98.2% |
| Hodgdon H4831 | <<locked>> | 94% | 55,114 psi | 86% | 3058 fps | 96.2% |
| Hodgdon H4831 SC | <<locked>> | 94% | 54,027 psi | 85% | 3038 fps | 96% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 54,636 psi | 86% | 3012 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 50,894 psi | 80% | 3153 fps | 98.3% |
| Hodgdon Superformance | <<locked>> | 86% | 54,853 psi | 86% | 3107 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,231 psi | 58% | 1926 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 57,421 psi | 90% | 3058 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 86% | 57,493 psi | 90% | 3048 fps | 99.3% |
| IMR 4831 | <<locked>> | 90% | 57,711 psi | 90% | 3077 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 56,449 psi | 88% | 3045 fps | 96.7% |
| IMR 7828 SSC | <<locked>> | 98% | 56,391 psi | 88% | 3156 fps | 97.3% |
| Lovex S065 | <<locked>> | 86% | 55,593 psi | 87% | 3005 fps | 99.8% |
| Lovex S070 | <<locked>> | 88% | 57,043 psi | 89% | 3051 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 54,143 psi | 85% | 3012 fps | 99.6% |
| Norma 204 | <<locked>> | 88% | 54,795 psi | 86% | 3058 fps | 97.9% |
| Norma MRP | <<locked>> | 94% | 54,752 psi | 86% | 3153 fps | 99.2% |
| Norma URP | <<locked>> | 88% | 55,782 psi | 87% | 3071 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 56,956 psi | 89% | 3173 fps | 97.7% |
| Ramshot Hunter | <<locked>> | 88% | 54,302 psi | 85% | 3068 fps | 99.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 55,506 psi | 87% | 3114 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,029 psi | 60% | 1969 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 57,232 psi | 90% | 3038 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 54,259 psi | 85% | 3097 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 57,377 psi | 90% | 3114 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 54,897 psi | 86% | 3133 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 51,285 psi | 80% | 3150 fps | 99.2% |
| Rottweil R 903 | <<locked>> | 82% | 55,187 psi | 86% | 2999 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 55,434 psi | 87% | 3038 fps | 97.1% |
| Rottweil R 905 | <<locked>> | 94% | 56,652 psi | 89% | 3107 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 86% | 56,637 psi | 89% | 3025 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 86% | 55,593 psi | 87% | 3005 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 88% | 57,043 psi | 89% | 3051 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 55,361 psi | 87% | 3041 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 57,725 psi | 90% | 2907 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 54,839 psi | 86% | 2949 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 56,173 psi | 88% | 3100 fps | 98.4% |
| Somchem S355 | <<locked>> | 82% | 54,679 psi | 86% | 2989 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 57,188 psi | 90% | 3025 fps | 96.6% |
| Somchem S365 | <<locked>> | 90% | 55,651 psi | 87% | 3077 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 57,566 psi | 90% | 3081 fps | 99.1% |
| Vihtavuori N150 | <<locked>> | 84% | 55,521 psi | 87% | 2956 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 57,435 psi | 90% | 3061 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 56,507 psi | 89% | 3051 fps | 98.7% |
| Vihtavuori N550 | <<locked>> | 88% | 57,000 psi | 89% | 3071 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 55,622 psi | 87% | 3097 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 54,665 psi | 86% | 3140 fps | 96.5% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 54,737 psi | 86% | 3117 fps | 96.8% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 56,550 psi | 89% | 3015 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 55,347 psi | 87% | 3081 fps | 99.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 55,869 psi | 88% | 3255 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 56,985 psi | 89% | 3068 fps | 98.3% |
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>> | 80% | 35,041 psi | 55% | 2625 fps | 95.6% |
| Accurate 4350 | <<locked>> | 80% | 45,339 psi | 71% | 2877 fps | 99.5% |
| Accurate High Country | <<locked>> | 88% | 46,688 psi | 73% | 3002 fps | 95.2% |
| Accurate MAGPRO | <<locked>> | 94% | 53,824 psi | 84% | 3123 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 51,996 psi | 81% | 2943 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 44,991 psi | 71% | 2894 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 92% | 48,704 psi | 76% | 2995 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 96% | 37,681 psi | 59% | 2789 fps | 95.1% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 42,743 psi | 67% | 2841 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 53,505 psi | 84% | 2976 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 42,540 psi | 67% | 2867 fps | 99.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 48,225 psi | 76% | 2992 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 42,351 psi | 66% | 2835 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 88% | 43,018 psi | 67% | 2890 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,953 psi | 52% | 2644 fps | 98.4% |
| Alliant Reloder-25 | <<locked>> | 84% | 32,808 psi | 51% | 2654 fps | 95.1% |
| Alliant Reloder-26 | 56.7 gr | 80% | 35,476 psi | 56% | 2772 fps | 97.2% |
| Bofors RP15 | <<locked>> | 90% | 42,685 psi | 67% | 2881 fps | 95.2% |
| Bofors RP30 | <<locked>> | 98% | 45,397 psi | 71% | 2972 fps | 95.3% |
| Bofors RP5 | <<locked>> | 88% | 43,018 psi | 67% | 2890 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 47,790 psi | 75% | 2867 fps | 97.6% |
| Hodgdon H1000 | <<locked>> | 96% | 45,208 psi | 71% | 2910 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 80% | 46,006 psi | 72% | 2907 fps | 97.8% |
| Hodgdon H4350 | <<locked>> | 80% | 48,283 psi | 76% | 2913 fps | 97% |
| Hodgdon H4831 | <<locked>> | 92% | 51,793 psi | 81% | 2999 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 92% | 50,836 psi | 80% | 2982 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,480 psi | 63% | 2756 fps | 99.7% |
| Hodgdon Retumbo | <<locked>> | 94% | 42,598 psi | 67% | 2959 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 44,976 psi | 70% | 2920 fps | 97.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,137 psi | 44% | 1726 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,844 psi | 67% | 2785 fps | 96.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,443 psi | 76% | 2884 fps | 98.1% |
| IMR 4831 | <<locked>> | 80% | 43,047 psi | 67% | 2818 fps | 99.2% |
| IMR 4955 Enduron | <<locked>> | 90% | 50,314 psi | 79% | 2936 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 94% | 49,763 psi | 78% | 3031 fps | 95.7% |
| Lovex S065 | <<locked>> | 80% | 46,891 psi | 73% | 2848 fps | 98.9% |
| Lovex S070 | <<locked>> | 80% | 45,411 psi | 71% | 2838 fps | 97.8% |
| Lovex S071 | <<locked>> | 84% | 34,577 psi | 54% | 2612 fps | 95.4% |
| Norma 204 | <<locked>> | 80% | 42,786 psi | 67% | 2822 fps | 95% |
| Norma MRP | 56.4 gr | 82% | 37,536 psi | 59% | 2792 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 44,005 psi | 69% | 2858 fps | 99.2% |
| Ramshot Grand | <<locked>> | 92% | 46,992 psi | 74% | 2986 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 42,670 psi | 67% | 2841 fps | 97.8% |
| Ramshot Magnum | <<locked>> | 90% | 39,842 psi | 62% | 2802 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,703 psi | 45% | 1765 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 54,012 psi | 85% | 2986 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 50,836 psi | 80% | 3041 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 44,672 psi | 70% | 2890 fps | 99.2% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 42,525 psi | 67% | 2894 fps | 98.8% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 39,914 psi | 63% | 2887 fps | 96% |
| Rottweil R 903 | <<locked>> | 80% | 52,069 psi | 82% | 2946 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 49,284 psi | 77% | 2923 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 84% | 41,698 psi | 65% | 2818 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 47,790 psi | 75% | 2867 fps | 97.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,891 psi | 73% | 2848 fps | 98.9% |
| Shooters World SW4350 | <<locked>> | 80% | 45,411 psi | 71% | 2838 fps | 97.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 52,257 psi | 82% | 2992 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 51,517 psi | 81% | 2818 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,832 psi | 72% | 2785 fps | 97.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 44,121 psi | 69% | 2874 fps | 95.8% |
| Somchem S355 | <<locked>> | 80% | 51,619 psi | 81% | 2936 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 50,618 psi | 79% | 2913 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 40,727 psi | 64% | 2818 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 40,321 psi | 63% | 2753 fps | 95.6% |
| Vihtavuori N150 | <<locked>> | 80% | 49,342 psi | 77% | 2858 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,107 psi | 71% | 2844 fps | 99.4% |
| Vihtavuori N165 | <<locked>> | 88% | 41,872 psi | 66% | 2782 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 44,875 psi | 70% | 2854 fps | 99.2% |
| Vihtavuori N555 | <<locked>> | 80% | 36,956 psi | 58% | 2730 fps | 98.4% |
| Vihtavuori N560 | <<locked>> | 92% | 51,314 psi | 80% | 3077 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 96% | 48,385 psi | 76% | 2999 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,801 psi | 69% | 2805 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 46,180 psi | 72% | 2910 fps | 97.8% |
| Winchester StaBALL HD | 54.5 gr | 80% | 29,921 psi | 47% | 2657 fps | 98.4% |
| Winchester Supreme 780 | <<locked>> | 88% | 44,193 psi | 69% | 2835 fps | 95.6% |
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 75 powders for .270 WSM loaded with the .277 | 130gr | Rhino Penetrator. Winchester StaBALL HD delivers the highest muzzle velocity at 3,255 fps; across all powders the maximum-charge window runs from 1,926 fps to 3,255 fps. ADI AR 2225 gives the best case fill at 100 %, and 75 of the 75 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 130.0 gr projectile in 0.277" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-25, Bofors RP15 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. Norma MRP, Alliant Reloder-26, Winchester StaBALL HD rank at the top here: for .270 WSM with the .277 | 130gr | Rhino Penetrator 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.