Load Specifications
Load data in caliber .270 WSM with .277 | 130gr | Barnes XLC BT bullet and 69 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Alliant Reloder-26 and Accurate High Country.
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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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 92% | 57,595 psi | 90% | 3031 fps | 99.8% |
| Accurate 4350 | <<locked>> | 82% | 55,390 psi | 87% | 3018 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 56,289 psi | 88% | 3153 fps | 97.6% |
| Accurate MAGPRO | <<locked>> | 92% | 56,985 psi | 89% | 3150 fps | 96.4% |
| ADI AR 2209 | <<locked>> | 90% | 56,217 psi | 88% | 3081 fps | 98.3% |
| ADI AR 2213 | <<locked>> | 94% | 57,392 psi | 90% | 3133 fps | 97.4% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 52,504 psi | 82% | 3028 fps | 96.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 48,167 psi | 75% | 3015 fps | 98.7% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 56,666 psi | 89% | 3077 fps | 98.4% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 56,666 psi | 89% | 3077 fps | 98.4% |
| Alliant Reloder-16 | <<locked>> | 86% | 56,231 psi | 88% | 3094 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 57,580 psi | 90% | 3117 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 56,173 psi | 88% | 3074 fps | 98.3% |
| Alliant Reloder-22 | <<locked>> | 92% | 54,824 psi | 86% | 3094 fps | 98.3% |
| Alliant Reloder-23 | <<locked>> | 94% | 56,130 psi | 88% | 3084 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 54,969 psi | 86% | 3130 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 56,173 psi | 88% | 3173 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 57,130 psi | 90% | 3130 fps | 98.5% |
| Bofors RP30ᴾ | <<locked>> | 100% | 54,926 psi | 86% | 3123 fps | 97.7% |
| Bofors RP5 | <<locked>> | 92% | 54,824 psi | 86% | 3094 fps | 98.3% |
| Bofors RP7 | <<locked>> | 82% | 55,840 psi | 88% | 2979 fps | 98.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 57,014 psi | 89% | 3114 fps | 98.1% |
| Hodgdon H414 | <<locked>> | 82% | 54,578 psi | 86% | 3035 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 82% | 56,420 psi | 88% | 3035 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 92% | 57,334 psi | 90% | 3068 fps | 96.7% |
| Hodgdon H4831 SC | <<locked>> | 92% | 56,333 psi | 88% | 3051 fps | 96.5% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 57,479 psi | 90% | 3022 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 56,971 psi | 89% | 3241 fps | 99.3% |
| Hodgdon Superformance | <<locked>> | 84% | 57,276 psi | 90% | 3117 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 38,014 psi | 60% | 1929 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 56,202 psi | 88% | 3012 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 82% | 56,086 psi | 88% | 2995 fps | 99.2% |
| IMR 4831 | <<locked>> | 86% | 57,682 psi | 90% | 3045 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 55,448 psi | 87% | 3002 fps | 96.6% |
| IMR 7828 SSC | <<locked>> | 94% | 55,622 psi | 87% | 3114 fps | 97.2% |
| Lovex S065 | <<locked>> | 82% | 55,172 psi | 86% | 2963 fps | 99.8% |
| Lovex S070 | <<locked>> | 84% | 56,637 psi | 89% | 3012 fps | 99.5% |
| Lovex S071 | <<locked>> | 96% | 55,796 psi | 87% | 3002 fps | 99.7% |
| Norma 204 | <<locked>> | 86% | 56,971 psi | 89% | 3064 fps | 98.2% |
| Norma 217ᴾ | <<locked>> | 100% | 44,976 psi | 70% | 2972 fps | 97.4% |
| Norma MRP | <<locked>> | 92% | 57,725 psi | 90% | 3176 fps | 99.5% |
| Norma URP | <<locked>> | 84% | 55,361 psi | 87% | 3031 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 56,362 psi | 88% | 3133 fps | 97.6% |
| Ramshot Hunter | <<locked>> | 86% | 57,014 psi | 89% | 3081 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 96% | 54,969 psi | 86% | 3074 fps | 98.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,885 psi | 61% | 1975 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 57,217 psi | 90% | 3077 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 57,217 psi | 90% | 3143 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 54,563 psi | 86% | 3182 fps | 99.6% |
| Rottweil R 904 | <<locked>> | 90% | 57,464 psi | 90% | 3041 fps | 97.5% |
| Rottweil R 905 | <<locked>> | 90% | 56,115 psi | 88% | 3068 fps | 98.4% |
| Rottweil R 907 | <<locked>> | 82% | 55,840 psi | 88% | 2979 fps | 98.9% |
| Shooters World Long Rifle | <<locked>> | 82% | 55,172 psi | 86% | 2963 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 84% | 56,637 psi | 89% | 3012 fps | 99.5% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 57,232 psi | 90% | 2956 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 55,651 psi | 87% | 3061 fps | 98.3% |
| Somchem S361 | <<locked>> | 88% | 56,144 psi | 88% | 2982 fps | 96.5% |
| Somchem S365 | <<locked>> | 86% | 55,709 psi | 87% | 3041 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 57,450 psi | 90% | 3048 fps | 99.1% |
| Vihtavuori N160 | <<locked>> | 84% | 56,579 psi | 89% | 3015 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 56,144 psi | 88% | 3015 fps | 98.7% |
| Vihtavuori N550 | <<locked>> | 84% | 56,434 psi | 88% | 3028 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 56,652 psi | 89% | 3074 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 57,276 psi | 90% | 3156 fps | 97.1% |
| Vihtavuori N565 | <<locked>> | 96% | 55,405 psi | 87% | 3097 fps | 97% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 55,143 psi | 86% | 2966 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 54,882 psi | 86% | 3038 fps | 99.2% |
| Winchester StaBALL HD | <<locked>> | 96% | 55,840 psi | 88% | 3225 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 56,260 psi | 88% | 3028 fps | 98.2% |
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% | 42,090 psi | 66% | 2740 fps | 97.9% |
| Accurate 4350 | <<locked>> | 80% | 52,504 psi | 82% | 2966 fps | 100% |
| Accurate High Country | 57.6 gr | 84% | 47,659 psi | 75% | 2986 fps | 95.6% |
| Accurate MAGPRO | <<locked>> | 90% | 53,853 psi | 84% | 3091 fps | 95.7% |
| ADI AR 2209 | <<locked>> | 80% | 42,757 psi | 67% | 2808 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 88% | 48,530 psi | 76% | 2963 fps | 95.3% |
| ADI AR 2217 | <<locked>> | 96% | 47,079 psi | 74% | 2917 fps | 95% |
| ADI AR 2225 | <<locked>> | 90% | 37,652 psi | 59% | 2753 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 43,294 psi | 68% | 2815 fps | 95.4% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 43,294 psi | 68% | 2815 fps | 95.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 47,776 psi | 75% | 2940 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 54,288 psi | 85% | 3064 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 42,975 psi | 67% | 2812 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 82% | 41,945 psi | 66% | 2828 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 38,943 psi | 61% | 2753 fps | 99.7% |
| Alliant Reloder-25 | <<locked>> | 80% | 34,925 psi | 55% | 2674 fps | 96.4% |
| Alliant Reloder-26 | 56.5 gr | 80% | 41,959 psi | 66% | 2897 fps | 99.1% |
| Bofors RP15 | <<locked>> | 84% | 41,713 psi | 65% | 2818 fps | 95% |
| Bofors RP30 | <<locked>> | 92% | 44,498 psi | 70% | 2917 fps | 95.1% |
| Bofors RP5 | <<locked>> | 82% | 41,945 psi | 66% | 2828 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 52,997 psi | 83% | 2930 fps | 98.6% |
| Hodgdon H1000 | <<locked>> | 92% | 45,701 psi | 72% | 2890 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 80% | 51,779 psi | 81% | 2986 fps | 98.8% |
| Hodgdon H4350 | <<locked>> | 80% | 53,490 psi | 84% | 2982 fps | 98.1% |
| Hodgdon H4831 | <<locked>> | 88% | 51,358 psi | 80% | 2963 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 88% | 50,502 psi | 79% | 2946 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 46,354 psi | 73% | 2835 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 41,698 psi | 65% | 2900 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 50,691 psi | 79% | 3002 fps | 98.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,689 psi | 45% | 1722 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 48,066 psi | 75% | 2858 fps | 97.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 53,214 psi | 83% | 2943 fps | 98.9% |
| IMR 4831 | <<locked>> | 80% | 49,269 psi | 77% | 2900 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 86% | 49,719 psi | 78% | 2894 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 88% | 47,195 psi | 74% | 2946 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 52,518 psi | 82% | 2917 fps | 99.6% |
| Lovex S070 | <<locked>> | 80% | 51,082 psi | 80% | 2910 fps | 98.8% |
| Lovex S071 | <<locked>> | 80% | 37,695 psi | 59% | 2635 fps | 96.7% |
| Norma 204 | <<locked>> | 80% | 48,095 psi | 75% | 2900 fps | 96.6% |
| Norma 217 | <<locked>> | 94% | 39,015 psi | 61% | 2825 fps | 95.4% |
| Norma MRP | <<locked>> | 80% | 41,350 psi | 65% | 2848 fps | 96.6% |
| Norma URP | <<locked>> | 80% | 49,676 psi | 78% | 2930 fps | 99.8% |
| Ramshot Grand | <<locked>> | 88% | 47,369 psi | 74% | 2959 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 48,283 psi | 76% | 2923 fps | 98.9% |
| Ramshot Magnum | <<locked>> | 84% | 39,189 psi | 61% | 2746 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,530 psi | 46% | 1768 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 51,024 psi | 80% | 2972 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 48,022 psi | 75% | 2976 fps | 99.6% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 39,189 psi | 61% | 2831 fps | 95.8% |
| Rottweil R 904 | <<locked>> | 82% | 46,557 psi | 73% | 2838 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 80% | 42,975 psi | 67% | 2808 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 52,997 psi | 83% | 2930 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 52,518 psi | 82% | 2917 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 80% | 51,082 psi | 80% | 2910 fps | 98.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 51,517 psi | 81% | 2858 fps | 98.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 42,583 psi | 67% | 2802 fps | 95.5% |
| Somchem S361 | <<locked>> | 84% | 50,227 psi | 79% | 2874 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 47,224 psi | 74% | 2904 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 44,237 psi | 69% | 2799 fps | 96.9% |
| Vihtavuori N160 | <<locked>> | 80% | 50,865 psi | 80% | 2917 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 82% | 40,828 psi | 64% | 2717 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 80% | 50,720 psi | 79% | 2927 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 80% | 43,874 psi | 69% | 2838 fps | 99.7% |
| Vihtavuori N560 | <<locked>> | 86% | 48,486 psi | 76% | 2986 fps | 95% |
| Vihtavuori N565 | <<locked>> | 90% | 47,137 psi | 74% | 2940 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 49,211 psi | 77% | 2871 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 51,779 psi | 81% | 2986 fps | 98.8% |
| Winchester StaBALL HD | 54.3 gr | 80% | 35,940 psi | 56% | 2805 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 82% | 42,438 psi | 67% | 2762 fps | 95.2% |
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 69 powders for .270 WSM loaded with the .277 | 130gr | Barnes XLC BT. Hodgdon Retumbo delivers the highest muzzle velocity at 3,241 fps; across all powders the maximum-charge window runs from 1,929 fps to 3,241 fps. ADI AR 2217 gives the best case fill at 100 %, and 69 of the 69 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 60–90 %, 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 2217, ADI AR 2225, Bofors RP30 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. Winchester StaBALL HD, Alliant Reloder-26, Accurate High Country rank at the top here: for .270 WSM with the .277 | 130gr | Barnes XLC BT 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.