Load Specifications
Load data in caliber .270 WSM with .277 | 130gr | CutEdge LZR bullet and 83 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 ReloadSwiss RS 70.
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 2700 | <<locked>> | 82% | 56,579 psi | 89% | 2992 fps | 98.7% |
| Accurate 3100 | <<locked>> | 98% | 56,376 psi | 88% | 3058 fps | 99.7% |
| Accurate 4064 | <<locked>> | 82% | 57,522 psi | 90% | 2995 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 54,476 psi | 85% | 3051 fps | 100% |
| Accurate High Country | <<locked>> | 96% | 56,797 psi | 89% | 3199 fps | 97.5% |
| Accurate MAGPRO | <<locked>> | 98% | 57,696 psi | 90% | 3196 fps | 96.4% |
| ADI AR 2208 | <<locked>> | 84% | 55,840 psi | 88% | 3012 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 54,201 psi | 85% | 3077 fps | 97.8% |
| ADI AR 2213 | <<locked>> | 98% | 55,434 psi | 87% | 3130 fps | 96.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 57,130 psi | 90% | 3041 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 57,276 psi | 90% | 3064 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 57,566 psi | 90% | 3153 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 55,390 psi | 87% | 3123 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 57,450 psi | 90% | 3130 fps | 98.4% |
| Alliant Reloder-22 | <<locked>> | 98% | 54,969 psi | 86% | 3133 fps | 98.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 55,666 psi | 87% | 3117 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 48,718 psi | 76% | 3051 fps | 99.6% |
| Alliant Reloder-26 | <<locked>> | 96% | 56,072 psi | 88% | 3212 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 53,925 psi | 85% | 3114 fps | 97.9% |
| Bofors RP3 | <<locked>> | 82% | 55,158 psi | 86% | 3012 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 54,969 psi | 86% | 3133 fps | 98.2% |
| Bofors RP7 | <<locked>> | 88% | 57,188 psi | 90% | 3045 fps | 99% |
| Hodgdon H380 | <<locked>> | 82% | 54,824 psi | 86% | 3018 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 88% | 55,753 psi | 87% | 3094 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 86% | 55,056 psi | 86% | 3048 fps | 98.2% |
| Hodgdon H4831 | <<locked>> | 96% | 55,608 psi | 87% | 3071 fps | 96.2% |
| Hodgdon H4831 SC | <<locked>> | 96% | 54,520 psi | 85% | 3051 fps | 96% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 54,737 psi | 86% | 3022 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 47,688 psi | 75% | 3087 fps | 97.4% |
| Hodgdon Superformance | <<locked>> | 88% | 55,709 psi | 87% | 3127 fps | 99.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,028 psi | 58% | 1919 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 55,332 psi | 87% | 2995 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 57,595 psi | 90% | 3028 fps | 99.3% |
| IMR 4350 | <<locked>> | 90% | 54,781 psi | 86% | 3022 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 86% | 55,013 psi | 86% | 3012 fps | 99% |
| IMR 4831 | <<locked>> | 90% | 54,534 psi | 85% | 3038 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 57,087 psi | 89% | 3058 fps | 96.7% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 56,724 psi | 89% | 3166 fps | 97.2% |
| Lovex S062 | <<locked>> | 82% | 56,057 psi | 88% | 2992 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 55,767 psi | 87% | 3015 fps | 99.7% |
| Lovex S070 | <<locked>> | 90% | 57,145 psi | 90% | 3058 fps | 99.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,343 psi | 79% | 2959 fps | 99.1% |
| Norma 203B | <<locked>> | 82% | 56,666 psi | 89% | 3051 fps | 100% |
| Norma 204 | <<locked>> | 90% | 55,448 psi | 87% | 3074 fps | 97.9% |
| Norma MRP | <<locked>> | 96% | 54,839 psi | 86% | 3163 fps | 99.2% |
| Norma URP | <<locked>> | 90% | 55,883 psi | 88% | 3081 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 57,101 psi | 89% | 3071 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 57,435 psi | 90% | 3186 fps | 97.7% |
| Ramshot Hunter | <<locked>> | 90% | 54,752 psi | 86% | 3081 fps | 99.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 51,822 psi | 81% | 3054 fps | 98.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,782 psi | 59% | 1965 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 54,462 psi | 85% | 3002 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 54,665 psi | 86% | 3114 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 57,609 psi | 90% | 3127 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 55,463 psi | 87% | 3150 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 47,979 psi | 75% | 3084 fps | 98.5% |
| Rottweil R 903 | <<locked>> | 84% | 55,245 psi | 87% | 3009 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 55,941 psi | 88% | 3048 fps | 97% |
| Rottweil R 905 | <<locked>> | 96% | 56,898 psi | 89% | 3117 fps | 98.4% |
| Rottweil R 907 | <<locked>> | 88% | 57,188 psi | 90% | 3045 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 88% | 55,767 psi | 87% | 3015 fps | 99.7% |
| Shooters World Precision | <<locked>> | 82% | 56,057 psi | 88% | 2992 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 57,145 psi | 90% | 3058 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 56,072 psi | 88% | 3061 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 55,085 psi | 86% | 2877 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 55,376 psi | 87% | 2963 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 56,405 psi | 88% | 3114 fps | 98.4% |
| Somchem S355 | <<locked>> | 84% | 54,853 psi | 86% | 3002 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 54,375 psi | 85% | 2986 fps | 95.9% |
| Somchem S365 | <<locked>> | 92% | 55,535 psi | 87% | 3087 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 57,711 psi | 90% | 3091 fps | 99.1% |
| Vihtavuori N150 | <<locked>> | 86% | 55,927 psi | 88% | 2972 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 54,491 psi | 85% | 3018 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 56,942 psi | 89% | 3064 fps | 98.7% |
| Vihtavuori N540 | <<locked>> | 82% | 56,463 psi | 88% | 2969 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 57,159 psi | 90% | 3077 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 55,230 psi | 87% | 3097 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 54,882 psi | 86% | 3146 fps | 96.4% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 50,981 psi | 80% | 3058 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 57,261 psi | 90% | 3031 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 55,753 psi | 87% | 3094 fps | 99.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 51,503 psi | 81% | 3199 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 57,551 psi | 90% | 3081 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 2700 | <<locked>> | 80% | 53,055 psi | 83% | 2933 fps | 98.2% |
| Accurate 3100 | <<locked>> | 82% | 33,997 psi | 53% | 2615 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 54,447 psi | 85% | 2949 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 42,134 psi | 66% | 2825 fps | 98.9% |
| Accurate High Country | <<locked>> | 90% | 46,470 psi | 73% | 3005 fps | 95.1% |
| Accurate MAGPRO | <<locked>> | 96% | 53,896 psi | 84% | 3130 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 49,647 psi | 78% | 2907 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 45,121 psi | 71% | 2904 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 94% | 48,907 psi | 77% | 3005 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,604 psi | 79% | 2936 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 53,940 psi | 85% | 3012 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,856 psi | 62% | 2818 fps | 98.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,237 psi | 71% | 2949 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 44,889 psi | 70% | 2897 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 90% | 42,728 psi | 67% | 2894 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,400 psi | 48% | 2582 fps | 97.4% |
| Alliant Reloder-25 | <<locked>> | 88% | 34,055 psi | 53% | 2703 fps | 95.6% |
| Alliant Reloder-26 | 55.8 gr | 80% | 32,576 psi | 51% | 2703 fps | 95.9% |
| Bofors RP15 | <<locked>> | 94% | 44,918 psi | 70% | 2940 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 51,561 psi | 81% | 2956 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 42,728 psi | 67% | 2894 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 45,063 psi | 71% | 2822 fps | 96.9% |
| Hodgdon H380 | <<locked>> | 80% | 51,532 psi | 81% | 2966 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 80% | 43,105 psi | 68% | 2854 fps | 97% |
| Hodgdon H4350 | <<locked>> | 80% | 45,643 psi | 72% | 2867 fps | 96.3% |
| Hodgdon H4831 | <<locked>> | 94% | 52,127 psi | 82% | 3009 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 94% | 51,169 psi | 80% | 2992 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,826 psi | 59% | 2710 fps | 99.3% |
| Hodgdon Retumbo | <<locked>> | 96% | 42,192 psi | 66% | 2956 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 42,076 psi | 66% | 2867 fps | 96.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,789 psi | 44% | 1716 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 52,243 psi | 82% | 2946 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 54,186 psi | 85% | 2972 fps | 99% |
| IMR 4350 | <<locked>> | 80% | 40,524 psi | 64% | 2743 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,151 psi | 72% | 2844 fps | 97.5% |
| IMR 4831 | <<locked>> | 80% | 40,001 psi | 63% | 2762 fps | 98.6% |
| IMR 4955 Enduron | <<locked>> | 92% | 50,546 psi | 79% | 2946 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 96% | 49,908 psi | 78% | 3038 fps | 95.6% |
| Lovex S062 | <<locked>> | 80% | 52,953 psi | 83% | 2946 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 44,295 psi | 69% | 2805 fps | 98.4% |
| Lovex S070 | <<locked>> | 80% | 42,525 psi | 67% | 2785 fps | 97% |
| Lovex S071 | <<locked>> | 88% | 35,346 psi | 55% | 2648 fps | 95.6% |
| Norma 203B | <<locked>> | 80% | 53,330 psi | 84% | 2995 fps | 100% |
| Norma 204 | <<locked>> | 84% | 45,730 psi | 72% | 2894 fps | 95.7% |
| Norma MRP | 58.2 gr | 86% | 39,436 psi | 62% | 2851 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 41,075 psi | 64% | 2805 fps | 98.7% |
| Ramshot Big Game | <<locked>> | 80% | 53,708 psi | 84% | 3018 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 46,905 psi | 74% | 2989 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 39,885 psi | 63% | 2792 fps | 97% |
| Ramshot Magnum | <<locked>> | 94% | 42,163 psi | 66% | 2864 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,311 psi | 44% | 1755 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,300 psi | 80% | 2946 fps | 99% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 47,863 psi | 75% | 3002 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,553 psi | 65% | 2838 fps | 98.6% |
| ReloadSwiss RS 70 | 55.3 gr | 80% | 39,842 psi | 62% | 2838 fps | 98% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 39,334 psi | 62% | 2877 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 80% | 48,805 psi | 76% | 2904 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 49,443 psi | 77% | 2933 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 88% | 44,121 psi | 69% | 2881 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 45,063 psi | 71% | 2822 fps | 96.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,295 psi | 69% | 2805 fps | 98.4% |
| Shooters World Precision | <<locked>> | 80% | 52,953 psi | 83% | 2946 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 42,525 psi | 67% | 2785 fps | 97% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,385 psi | 77% | 2953 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,066 psi | 77% | 2789 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,294 psi | 68% | 2743 fps | 97% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 43,714 psi | 69% | 2877 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 48,834 psi | 77% | 2900 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 51,039 psi | 80% | 2927 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 37,797 psi | 59% | 2766 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 39,972 psi | 63% | 2756 fps | 95.3% |
| Vihtavuori N150 | <<locked>> | 80% | 46,499 psi | 73% | 2822 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,438 psi | 67% | 2799 fps | 98.9% |
| Vihtavuori N165 | <<locked>> | 90% | 41,582 psi | 65% | 2785 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 53,229 psi | 83% | 2920 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 42,018 psi | 66% | 2805 fps | 98.7% |
| Vihtavuori N555 | <<locked>> | 80% | 33,823 psi | 53% | 2667 fps | 97.4% |
| Vihtavuori N560 | <<locked>> | 94% | 51,314 psi | 80% | 3081 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 98% | 47,848 psi | 75% | 2999 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,249 psi | 65% | 2762 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 43,352 psi | 68% | 2861 fps | 97% |
| Winchester StaBALL HD | <<locked>> | 80% | 27,296 psi | 43% | 2569 fps | 96.7% |
| Winchester Supreme 780 | <<locked>> | 90% | 44,164 psi | 69% | 2844 fps | 95.5% |
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 91 powders for .270 WSM loaded with the .277 | 130gr | CutEdge LZR. Alliant Reloder-26 delivers the highest muzzle velocity at 3,212 fps; across all powders the maximum-charge window runs from 1,919 fps to 3,212 fps. ADI AR 2217 gives the best case fill at 100 %, and 91 of the 91 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 130.0 gr projectile in 0.277" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, 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. Norma MRP, Alliant Reloder-26, ReloadSwiss RS 70 rank at the top here: for .270 WSM with the .277 | 130gr | CutEdge LZR they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, Baschieri & Pellagri 109, Norma 217 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.