Load Specifications
Load data in caliber .270 WSM with .277 | 130gr | Nosler AccuBond bullet and 74 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are IMR 4350, Norma MRP and Alliant Reloder-26.
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>> | 96% | 56,782 psi | 89% | 3058 fps | 99.8% |
| Accurate 4350 | <<locked>> | 86% | 54,824 psi | 86% | 3048 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 56,811 psi | 89% | 3192 fps | 97.6% |
| Accurate MAGPRO | <<locked>> | 96% | 57,566 psi | 90% | 3189 fps | 96.5% |
| ADI AR 2208 | <<locked>> | 82% | 55,303 psi | 87% | 2999 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 57,537 psi | 90% | 3130 fps | 98.5% |
| ADI AR 2213 | <<locked>> | 96% | 55,274 psi | 87% | 3123 fps | 97% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 42,322 psi | 66% | 2913 fps | 97.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 56,942 psi | 89% | 3031 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 57,305 psi | 90% | 3143 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 55,187 psi | 86% | 3110 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 57,058 psi | 89% | 3120 fps | 98.5% |
| Alliant Reloder-22 | <<locked>> | 96% | 55,201 psi | 87% | 3133 fps | 98.3% |
| Alliant Reloder-23 | <<locked>> | 98% | 55,970 psi | 88% | 3114 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 52,040 psi | 82% | 3110 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 94% | 56,550 psi | 89% | 3212 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 54,433 psi | 85% | 3117 fps | 98.1% |
| Bofors RP30ᴾ | <<locked>> | 100% | 48,501 psi | 76% | 3038 fps | 96.3% |
| Bofors RP5 | <<locked>> | 96% | 55,201 psi | 87% | 3133 fps | 98.3% |
| Bofors RP7 | <<locked>> | 86% | 56,956 psi | 89% | 3035 fps | 99% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 51,242 psi | 80% | 3038 fps | 96.9% |
| Hodgdon H414 | <<locked>> | 86% | 55,463 psi | 87% | 3084 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 84% | 54,636 psi | 86% | 3035 fps | 98.3% |
| Hodgdon H4831 | <<locked>> | 94% | 55,419 psi | 87% | 3064 fps | 96.3% |
| Hodgdon H4831 SC | <<locked>> | 94% | 54,433 psi | 85% | 3048 fps | 96.1% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 54,810 psi | 86% | 3015 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 50,981 psi | 80% | 3156 fps | 98.4% |
| Hodgdon Superformance | <<locked>> | 86% | 55,288 psi | 87% | 3117 fps | 99.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,275 psi | 58% | 1929 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 57,522 psi | 90% | 3061 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 86% | 57,609 psi | 90% | 3051 fps | 99.4% |
| IMR 4831 | <<locked>> | 88% | 54,824 psi | 86% | 3035 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 56,739 psi | 89% | 3051 fps | 96.8% |
| IMR 7828 SSC | <<locked>> | 98% | 56,507 psi | 89% | 3159 fps | 97.4% |
| Lovex S065 | <<locked>> | 86% | 55,767 psi | 87% | 3009 fps | 99.8% |
| Lovex S070 | <<locked>> | 88% | 57,145 psi | 90% | 3054 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 54,505 psi | 85% | 3022 fps | 99.6% |
| Norma 204 | <<locked>> | 88% | 54,926 psi | 86% | 3061 fps | 97.9% |
| Norma MRP | <<locked>> | 94% | 54,897 psi | 86% | 3159 fps | 99.3% |
| Norma URP | <<locked>> | 88% | 55,956 psi | 88% | 3074 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 57,290 psi | 90% | 3179 fps | 97.8% |
| Ramshot Hunter | <<locked>> | 88% | 54,447 psi | 85% | 3071 fps | 99.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 55,593 psi | 87% | 3117 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,058 psi | 60% | 1972 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 57,305 psi | 90% | 3041 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 54,462 psi | 85% | 3100 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 57,450 psi | 90% | 3117 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 54,955 psi | 86% | 3136 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 51,561 psi | 81% | 3156 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 82% | 55,405 psi | 87% | 3002 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 55,550 psi | 87% | 3041 fps | 97.1% |
| Rottweil R 905 | <<locked>> | 94% | 56,710 psi | 89% | 3110 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 86% | 56,956 psi | 89% | 3035 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 86% | 55,767 psi | 87% | 3009 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 88% | 57,145 psi | 90% | 3054 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 55,564 psi | 87% | 3048 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 54,563 psi | 86% | 2864 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 54,926 psi | 86% | 2953 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 56,231 psi | 88% | 3104 fps | 98.4% |
| Somchem S355 | <<locked>> | 82% | 54,810 psi | 86% | 2992 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 57,493 psi | 90% | 3035 fps | 96.7% |
| Somchem S365 | <<locked>> | 90% | 55,767 psi | 87% | 3081 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 54,360 psi | 85% | 3031 fps | 98.7% |
| Vihtavuori N150 | <<locked>> | 84% | 55,709 psi | 87% | 2963 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 57,551 psi | 90% | 3061 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 56,913 psi | 89% | 3061 fps | 98.8% |
| Vihtavuori N550 | <<locked>> | 88% | 57,087 psi | 89% | 3071 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 56,014 psi | 88% | 3100 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 54,795 psi | 86% | 3140 fps | 96.6% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 55,114 psi | 86% | 3127 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 56,855 psi | 89% | 3018 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 55,738 psi | 87% | 3087 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 55,956 psi | 88% | 3255 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 57,392 psi | 90% | 3074 fps | 98.4% |
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% | 35,143 psi | 55% | 2628 fps | 95.7% |
| Accurate 4350 | <<locked>> | 80% | 45,513 psi | 71% | 2881 fps | 99.5% |
| Accurate High Country | <<locked>> | 88% | 47,036 psi | 74% | 3012 fps | 95.4% |
| Accurate MAGPRO | <<locked>> | 94% | 53,940 psi | 85% | 3127 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 80% | 52,185 psi | 82% | 2949 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 42,511 psi | 67% | 2841 fps | 95% |
| ADI AR 2213 | <<locked>> | 92% | 48,747 psi | 76% | 2999 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 96% | 37,898 psi | 59% | 2799 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 53,751 psi | 84% | 2979 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 42,685 psi | 67% | 2874 fps | 99.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 48,385 psi | 76% | 2995 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 42,467 psi | 67% | 2838 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 88% | 43,323 psi | 68% | 2900 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,098 psi | 52% | 2651 fps | 98.5% |
| Alliant Reloder-25 | <<locked>> | 84% | 32,895 psi | 52% | 2657 fps | 95.2% |
| Alliant Reloder-26 | 56.9 gr | 80% | 35,607 psi | 56% | 2779 fps | 97.3% |
| Bofors RP15 | <<locked>> | 90% | 42,859 psi | 67% | 2887 fps | 95.3% |
| Bofors RP30 | <<locked>> | 98% | 45,716 psi | 72% | 2982 fps | 95.5% |
| Bofors RP5 | <<locked>> | 88% | 43,323 psi | 68% | 2900 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 47,906 psi | 75% | 2871 fps | 97.6% |
| Hodgdon H1000 | <<locked>> | 96% | 45,440 psi | 71% | 2920 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 80% | 46,122 psi | 72% | 2910 fps | 97.8% |
| Hodgdon H4350 | <<locked>> | 80% | 48,443 psi | 76% | 2920 fps | 97.1% |
| Hodgdon H4831 | <<locked>> | 92% | 51,938 psi | 81% | 3002 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 92% | 50,995 psi | 80% | 2986 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,625 psi | 64% | 2762 fps | 99.7% |
| Hodgdon Retumbo | <<locked>> | 94% | 42,699 psi | 67% | 2966 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 45,107 psi | 71% | 2923 fps | 97.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,007 psi | 44% | 1722 fps | 100% |
| IMR 4350 | 52.7 gr | 80% | 43,192 psi | 68% | 2795 fps | 96.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,559 psi | 76% | 2890 fps | 98.2% |
| IMR 4831 | <<locked>> | 80% | 43,178 psi | 68% | 2822 fps | 99.2% |
| IMR 4955 Enduron | <<locked>> | 90% | 50,386 psi | 79% | 2936 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 94% | 50,053 psi | 78% | 3038 fps | 95.8% |
| Lovex S065 | <<locked>> | 80% | 47,021 psi | 74% | 2851 fps | 98.9% |
| Lovex S070 | <<locked>> | 80% | 45,527 psi | 71% | 2841 fps | 97.8% |
| Lovex S071 | <<locked>> | 84% | 34,679 psi | 54% | 2618 fps | 95.5% |
| Norma 204 | <<locked>> | 80% | 42,917 psi | 67% | 2828 fps | 95.1% |
| Norma MRP | 56.6 gr | 82% | 37,623 psi | 59% | 2795 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 44,135 psi | 69% | 2861 fps | 99.3% |
| Ramshot Grand | <<locked>> | 92% | 47,108 psi | 74% | 2989 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 42,801 psi | 67% | 2848 fps | 97.8% |
| Ramshot Magnum | <<locked>> | 90% | 40,147 psi | 63% | 2812 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,776 psi | 45% | 1768 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 54,201 psi | 85% | 2989 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 51,039 psi | 80% | 3045 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 44,802 psi | 70% | 2894 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 42,641 psi | 67% | 2897 fps | 98.8% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 37,623 psi | 59% | 2825 fps | 95% |
| Rottweil R 903 | <<locked>> | 80% | 52,214 psi | 82% | 2949 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 46,572 psi | 73% | 2871 fps | 95% |
| Rottweil R 905 | <<locked>> | 84% | 42,047 psi | 66% | 2828 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 47,906 psi | 75% | 2871 fps | 97.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,021 psi | 74% | 2851 fps | 98.9% |
| Shooters World SW4350 | <<locked>> | 80% | 45,527 psi | 71% | 2841 fps | 97.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 52,373 psi | 82% | 2995 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 51,677 psi | 81% | 2822 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,209 psi | 72% | 2795 fps | 97.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 41,698 psi | 65% | 2822 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 51,764 psi | 81% | 2940 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 50,749 psi | 80% | 2917 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 41,147 psi | 64% | 2828 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 40,625 psi | 64% | 2762 fps | 95.7% |
| Vihtavuori N150 | <<locked>> | 80% | 49,545 psi | 78% | 2861 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,223 psi | 71% | 2848 fps | 99.4% |
| Vihtavuori N165 | <<locked>> | 88% | 41,959 psi | 66% | 2785 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 45,063 psi | 71% | 2858 fps | 99.2% |
| Vihtavuori N555 | <<locked>> | 80% | 37,086 psi | 58% | 2736 fps | 98.5% |
| Vihtavuori N560 | <<locked>> | 92% | 51,445 psi | 81% | 3077 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 96% | 48,718 psi | 76% | 3009 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 44,106 psi | 69% | 2812 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 46,340 psi | 73% | 2917 fps | 97.9% |
| Winchester StaBALL HD | <<locked>> | 80% | 30,023 psi | 47% | 2664 fps | 98.5% |
| Winchester Supreme 780 | <<locked>> | 88% | 44,527 psi | 70% | 2844 fps | 95.8% |
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 80 powders for .270 WSM loaded with the .277 | 130gr | Nosler AccuBond. Winchester StaBALL HD delivers the highest muzzle velocity at 3,255 fps; across all powders the maximum-charge window runs from 1,929 fps to 3,255 fps. ADI AR 2217 gives the best case fill at 100 %, and 80 of the 80 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 1:10.5 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. IMR 4350, Norma MRP, Alliant Reloder-26 rank at the top here: for .270 WSM with the .277 | 130gr | Nosler AccuBond they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Baschieri & Pellagri 109, IMR 8133 Enduron, ReloadSwiss RS 80 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.