Load Specifications
Load data in caliber .270 WSM with .277 | 130gr | Nosler Ballistic Silver Tip 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.
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% | 57,334 psi | 90% | 3068 fps | 99.8% |
| Accurate 4350 | <<locked>> | 86% | 55,114 psi | 86% | 3054 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 57,363 psi | 90% | 3205 fps | 97.8% |
| Accurate MAGPRO | <<locked>> | 94% | 54,491 psi | 85% | 3136 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 82% | 55,579 psi | 87% | 3005 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 57,711 psi | 90% | 3136 fps | 98.5% |
| ADI AR 2213 | <<locked>> | 96% | 55,709 psi | 87% | 3133 fps | 97.1% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 42,685 psi | 67% | 2923 fps | 97.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 57,188 psi | 90% | 3035 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 57,682 psi | 90% | 3150 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 55,477 psi | 87% | 3117 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 57,276 psi | 90% | 3123 fps | 98.5% |
| Alliant Reloder-22 | <<locked>> | 96% | 55,666 psi | 87% | 3140 fps | 98.4% |
| Alliant Reloder-23 | <<locked>> | 98% | 56,550 psi | 89% | 3127 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 52,446 psi | 82% | 3117 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 94% | 56,855 psi | 89% | 3215 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 54,679 psi | 86% | 3123 fps | 98.2% |
| Bofors RP30ᴾ | <<locked>> | 100% | 48,733 psi | 76% | 3045 fps | 96.4% |
| Bofors RP5 | <<locked>> | 96% | 55,666 psi | 87% | 3140 fps | 98.4% |
| Bofors RP7 | <<locked>> | 86% | 57,217 psi | 90% | 3041 fps | 99.1% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 51,721 psi | 81% | 3048 fps | 97.1% |
| Hodgdon H414 | <<locked>> | 86% | 55,709 psi | 87% | 3091 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 84% | 54,897 psi | 86% | 3041 fps | 98.3% |
| Hodgdon H4831 | <<locked>> | 94% | 55,608 psi | 87% | 3071 fps | 96.4% |
| Hodgdon H4831 SC | <<locked>> | 94% | 54,636 psi | 86% | 3051 fps | 96.2% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 55,085 psi | 86% | 3022 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 51,416 psi | 81% | 3166 fps | 98.5% |
| Hodgdon Superformance | <<locked>> | 86% | 55,506 psi | 87% | 3120 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,231 psi | 58% | 1929 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 54,563 psi | 86% | 3015 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 84% | 54,694 psi | 86% | 3002 fps | 99.1% |
| IMR 4831 | <<locked>> | 88% | 55,071 psi | 86% | 3041 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 56,942 psi | 89% | 3058 fps | 96.9% |
| IMR 7828 SSC | <<locked>> | 98% | 56,942 psi | 89% | 3169 fps | 97.5% |
| Lovex S065 | <<locked>> | 86% | 56,043 psi | 88% | 3015 fps | 99.8% |
| Lovex S070 | <<locked>> | 88% | 57,392 psi | 90% | 3058 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 54,708 psi | 86% | 3025 fps | 99.6% |
| Norma 204 | <<locked>> | 88% | 55,347 psi | 87% | 3068 fps | 98% |
| Norma MRP | <<locked>> | 94% | 55,434 psi | 87% | 3166 fps | 99.3% |
| Norma URP | <<locked>> | 88% | 56,217 psi | 88% | 3081 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 57,711 psi | 90% | 3189 fps | 97.9% |
| Ramshot Hunter | <<locked>> | 88% | 54,969 psi | 86% | 3081 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 56,086 psi | 88% | 3123 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,247 psi | 60% | 1978 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 57,566 psi | 90% | 3048 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 54,781 psi | 86% | 3107 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 54,418 psi | 85% | 3068 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 55,463 psi | 87% | 3143 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 52,025 psi | 82% | 3166 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 82% | 55,651 psi | 87% | 3005 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 55,796 psi | 87% | 3045 fps | 97.2% |
| Rottweil R 905 | <<locked>> | 94% | 57,246 psi | 90% | 3120 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 86% | 57,217 psi | 90% | 3041 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 86% | 56,043 psi | 88% | 3015 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 88% | 57,392 psi | 90% | 3058 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 55,854 psi | 88% | 3051 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 54,824 psi | 86% | 2871 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 55,143 psi | 86% | 2956 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 56,768 psi | 89% | 3114 fps | 98.5% |
| Somchem S355 | <<locked>> | 82% | 55,143 psi | 86% | 2999 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 57,740 psi | 90% | 3038 fps | 96.8% |
| Somchem S365 | <<locked>> | 90% | 56,391 psi | 88% | 3091 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 54,868 psi | 86% | 3041 fps | 98.8% |
| Vihtavuori N150 | <<locked>> | 84% | 55,912 psi | 88% | 2966 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 54,534 psi | 85% | 3015 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 57,072 psi | 89% | 3061 fps | 98.9% |
| Vihtavuori N550 | <<locked>> | 88% | 57,406 psi | 90% | 3081 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 56,289 psi | 88% | 3107 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 55,245 psi | 87% | 3150 fps | 96.7% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 55,332 psi | 87% | 3130 fps | 97% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 57,072 psi | 89% | 3025 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 55,970 psi | 88% | 3094 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 56,579 psi | 89% | 3264 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 57,551 psi | 90% | 3077 fps | 98.5% |
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% | 35,404 psi | 55% | 2635 fps | 95.8% |
| Accurate 4350 | <<locked>> | 80% | 45,832 psi | 72% | 2890 fps | 99.5% |
| Accurate High Country | <<locked>> | 88% | 47,340 psi | 74% | 3018 fps | 95.5% |
| Accurate MAGPRO | <<locked>> | 92% | 51,039 psi | 80% | 3074 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 52,475 psi | 82% | 2953 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 42,757 psi | 67% | 2844 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 92% | 49,197 psi | 77% | 3009 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 96% | 38,043 psi | 60% | 2805 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 54,012 psi | 85% | 2989 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 42,757 psi | 67% | 2877 fps | 99.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 48,689 psi | 76% | 3002 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 42,714 psi | 67% | 2844 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 88% | 43,569 psi | 68% | 2907 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,272 psi | 52% | 2657 fps | 98.6% |
| Alliant Reloder-25 | <<locked>> | 84% | 33,098 psi | 52% | 2664 fps | 95.4% |
| Alliant Reloder-26 | 57.2 gr | 80% | 35,824 psi | 56% | 2785 fps | 97.4% |
| Bofors RP15 | <<locked>> | 90% | 43,062 psi | 67% | 2894 fps | 95.4% |
| Bofors RP30 | <<locked>> | 98% | 45,919 psi | 72% | 2986 fps | 95.5% |
| Bofors RP5 | <<locked>> | 88% | 43,569 psi | 68% | 2907 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 47,993 psi | 75% | 2874 fps | 97.7% |
| Hodgdon H1000 | <<locked>> | 96% | 45,672 psi | 72% | 2927 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 80% | 46,412 psi | 73% | 2917 fps | 97.9% |
| Hodgdon H4350 | <<locked>> | 80% | 48,689 psi | 76% | 2927 fps | 97.2% |
| Hodgdon H4831 | <<locked>> | 92% | 52,402 psi | 82% | 3012 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 92% | 51,416 psi | 81% | 2995 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,930 psi | 64% | 2769 fps | 99.8% |
| Hodgdon Retumbo | <<locked>> | 92% | 40,538 psi | 64% | 2910 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 45,353 psi | 71% | 2930 fps | 97.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,036 psi | 44% | 1726 fps | 100% |
| IMR 4350 | 52.9 gr | 80% | 43,236 psi | 68% | 2799 fps | 96.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,776 psi | 76% | 2894 fps | 98.2% |
| IMR 4831 | <<locked>> | 80% | 43,424 psi | 68% | 2828 fps | 99.3% |
| IMR 4955 Enduron | <<locked>> | 90% | 50,807 psi | 80% | 2949 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 92% | 47,413 psi | 74% | 2986 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 47,297 psi | 74% | 2858 fps | 99% |
| Lovex S070 | <<locked>> | 80% | 45,600 psi | 71% | 2841 fps | 97.9% |
| Lovex S071 | <<locked>> | 84% | 34,751 psi | 54% | 2618 fps | 95.6% |
| Norma 204 | <<locked>> | 80% | 43,134 psi | 68% | 2831 fps | 95.2% |
| Norma MRP | 56.9 gr | 82% | 37,855 psi | 59% | 2802 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 44,193 psi | 69% | 2864 fps | 99.3% |
| Ramshot Grand | <<locked>> | 92% | 47,326 psi | 74% | 2995 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 43,033 psi | 67% | 2851 fps | 97.9% |
| Ramshot Magnum | <<locked>> | 90% | 40,335 psi | 63% | 2818 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,790 psi | 45% | 1772 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 54,389 psi | 85% | 2995 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 51,271 psi | 80% | 3051 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,092 psi | 71% | 2900 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 42,873 psi | 67% | 2900 fps | 98.9% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 37,768 psi | 59% | 2831 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 80% | 52,301 psi | 82% | 2953 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 46,818 psi | 73% | 2877 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 84% | 42,308 psi | 66% | 2835 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 47,993 psi | 75% | 2874 fps | 97.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,297 psi | 74% | 2858 fps | 99% |
| Shooters World SW4350 | <<locked>> | 80% | 45,600 psi | 71% | 2841 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 52,678 psi | 83% | 3002 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 51,721 psi | 81% | 2825 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,224 psi | 72% | 2799 fps | 97.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 41,930 psi | 66% | 2828 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 52,069 psi | 82% | 2949 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 51,169 psi | 80% | 2927 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 41,205 psi | 65% | 2828 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,435 psi | 60% | 2710 fps | 95% |
| Vihtavuori N150 | <<locked>> | 80% | 49,603 psi | 78% | 2864 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,542 psi | 71% | 2854 fps | 99.4% |
| Vihtavuori N165 | <<locked>> | 86% | 39,798 psi | 62% | 2736 fps | 95% |
| Vihtavuori N550 | <<locked>> | 80% | 45,266 psi | 71% | 2864 fps | 99.3% |
| Vihtavuori N555 | <<locked>> | 80% | 37,347 psi | 59% | 2743 fps | 98.6% |
| Vihtavuori N560 | <<locked>> | 90% | 48,689 psi | 76% | 3025 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 96% | 48,921 psi | 77% | 3012 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 44,324 psi | 69% | 2815 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 46,586 psi | 73% | 2920 fps | 97.9% |
| Winchester StaBALL HD | <<locked>> | 80% | 30,226 psi | 47% | 2671 fps | 98.6% |
| Winchester Supreme 780 | <<locked>> | 86% | 41,930 psi | 66% | 2792 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 80 powders for .270 WSM loaded with the .277 | 130gr | Nosler Ballistic Silver Tip. Winchester StaBALL HD delivers the highest muzzle velocity at 3,264 fps; across all powders the maximum-charge window runs from 1,929 fps to 3,264 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 1:11.0 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 Ballistic Silver Tip 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.