Load Specifications
Load data in caliber .270 WSM with .277 | 136gr | Peregrine VLR-5 bullet and 81 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Accurate High Country and Norma MRP.
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 3100 | <<locked>> | 96% | 54,520 psi | 85% | 2969 fps | 99.7% |
| Accurate 4350 | <<locked>> | 88% | 56,072 psi | 88% | 3015 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 55,085 psi | 86% | 3110 fps | 97.7% |
| Accurate MAGPRO | <<locked>> | 96% | 55,709 psi | 87% | 3104 fps | 96.5% |
| ADI AR 2208 | <<locked>> | 84% | 57,246 psi | 90% | 2972 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 55,970 psi | 88% | 3051 fps | 98.5% |
| ADI AR 2213 | <<locked>> | 98% | 57,348 psi | 90% | 3104 fps | 97.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 40,538 psi | 64% | 2825 fps | 96.9% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 56,173 psi | 88% | 3048 fps | 98.5% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 56,173 psi | 88% | 3048 fps | 98.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 55,230 psi | 87% | 2949 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 55,796 psi | 87% | 3061 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 57,319 psi | 90% | 3084 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 55,463 psi | 87% | 3038 fps | 98.5% |
| Alliant Reloder-22 | <<locked>> | 98% | 56,971 psi | 89% | 3107 fps | 98.8% |
| Alliant Reloder-23 | <<locked>> | 98% | 54,186 psi | 85% | 3031 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 50,198 psi | 79% | 3022 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 94% | 54,534 psi | 85% | 3123 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 55,927 psi | 88% | 3087 fps | 98.6% |
| Bofors RP3 | <<locked>> | 82% | 56,449 psi | 88% | 2969 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 46,557 psi | 73% | 2949 fps | 96.1% |
| Bofors RP5 | <<locked>> | 98% | 56,971 psi | 89% | 3107 fps | 98.8% |
| Bofors RP7 | <<locked>> | 86% | 55,245 psi | 87% | 2953 fps | 99% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 49,603 psi | 78% | 2956 fps | 96.9% |
| Hodgdon H380 | <<locked>> | 82% | 56,333 psi | 88% | 2982 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 57,246 psi | 90% | 3058 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 86% | 56,652 psi | 89% | 3012 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 96% | 57,479 psi | 90% | 3045 fps | 97.1% |
| Hodgdon H4831 SC | <<locked>> | 96% | 56,304 psi | 88% | 3025 fps | 96.9% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 56,550 psi | 89% | 2986 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 49,211 psi | 77% | 3068 fps | 98.3% |
| Hodgdon Superformance | <<locked>> | 88% | 57,406 psi | 90% | 3094 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,130 psi | 58% | 1877 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 56,724 psi | 89% | 2953 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 56,101 psi | 88% | 2982 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 86% | 56,405 psi | 88% | 2972 fps | 99.4% |
| IMR 4831 | <<locked>> | 90% | 56,246 psi | 88% | 3005 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 55,303 psi | 87% | 2976 fps | 96.9% |
| IMR 7828 SSC | <<locked>> | 98% | 55,056 psi | 86% | 3081 fps | 97.4% |
| Lovex S062 | <<locked>> | 82% | 57,406 psi | 90% | 2949 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 57,217 psi | 90% | 2979 fps | 99.9% |
| Lovex S070 | <<locked>> | 88% | 55,303 psi | 87% | 2969 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 52,156 psi | 82% | 2933 fps | 99.6% |
| Norma 204 | <<locked>> | 90% | 56,942 psi | 89% | 3038 fps | 98.5% |
| Norma MRP | <<locked>> | 96% | 56,695 psi | 89% | 3133 fps | 99.6% |
| Norma URP | <<locked>> | 90% | 57,653 psi | 90% | 3045 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 55,492 psi | 87% | 3097 fps | 97.8% |
| Ramshot Hunter | <<locked>> | 90% | 56,289 psi | 88% | 3045 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 53,853 psi | 84% | 3035 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,898 psi | 59% | 1923 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 55,912 psi | 88% | 2963 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 56,623 psi | 89% | 3071 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 55,709 psi | 87% | 3035 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 57,058 psi | 89% | 3110 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 49,661 psi | 78% | 3068 fps | 99.2% |
| Rottweil R 903 | <<locked>> | 84% | 56,826 psi | 89% | 2969 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 57,653 psi | 90% | 3022 fps | 97.8% |
| Rottweil R 905 | <<locked>> | 94% | 55,187 psi | 86% | 3028 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 86% | 55,245 psi | 87% | 2953 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 88% | 57,217 psi | 90% | 2979 fps | 99.9% |
| Shooters World Precision | <<locked>> | 82% | 57,406 psi | 90% | 2949 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 55,303 psi | 87% | 2969 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 57,450 psi | 90% | 3018 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 56,420 psi | 88% | 2835 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 56,840 psi | 89% | 2930 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 54,723 psi | 86% | 3025 fps | 98.5% |
| Somchem S355 | <<locked>> | 84% | 56,362 psi | 88% | 2959 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 55,825 psi | 87% | 2953 fps | 96.7% |
| Somchem S365 | <<locked>> | 92% | 57,595 psi | 90% | 3048 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 56,014 psi | 88% | 3009 fps | 99.2% |
| Vihtavuori N150 | <<locked>> | 86% | 57,508 psi | 90% | 2930 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 55,883 psi | 88% | 2982 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 55,056 psi | 86% | 2979 fps | 98.8% |
| Vihtavuori N550 | <<locked>> | 88% | 55,419 psi | 87% | 2992 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 57,217 psi | 90% | 3064 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 56,652 psi | 89% | 3120 fps | 97.3% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 53,040 psi | 83% | 3038 fps | 96.8% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 55,317 psi | 87% | 2943 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 57,522 psi | 90% | 3061 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 54,012 psi | 85% | 3169 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 55,492 psi | 87% | 2992 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% | 33,098 psi | 52% | 2539 fps | 95.3% |
| Accurate 4350 | <<locked>> | 80% | 43,555 psi | 68% | 2795 fps | 99.4% |
| Accurate High Country | 59.3 gr | 88% | 45,034 psi | 71% | 2920 fps | 95.2% |
| Accurate MAGPRO | <<locked>> | 94% | 52,330 psi | 82% | 3045 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 80% | 50,879 psi | 80% | 2871 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 43,685 psi | 68% | 2818 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 92% | 47,384 psi | 74% | 2920 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 96% | 36,187 psi | 57% | 2710 fps | 95% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 41,336 psi | 65% | 2762 fps | 95.1% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 41,336 psi | 65% | 2762 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,982 psi | 81% | 2897 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,046 psi | 64% | 2789 fps | 99.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,804 psi | 73% | 2913 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 40,959 psi | 64% | 2756 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 88% | 41,611 psi | 65% | 2815 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,386 psi | 49% | 2562 fps | 98.3% |
| Alliant Reloder-25 | <<locked>> | 86% | 33,141 psi | 52% | 2628 fps | 95.8% |
| Alliant Reloder-26 | 55.6 gr | 80% | 33,794 psi | 53% | 2687 fps | 97% |
| Bofors RP15 | <<locked>> | 90% | 41,089 psi | 64% | 2802 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 53,069 psi | 83% | 2917 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 43,714 psi | 69% | 2890 fps | 95.3% |
| Bofors RP5 | <<locked>> | 88% | 41,611 psi | 65% | 2815 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 46,224 psi | 72% | 2789 fps | 97.6% |
| Hodgdon H1000 | <<locked>> | 96% | 43,685 psi | 68% | 2835 fps | 95.1% |
| Hodgdon H380 | <<locked>> | 80% | 52,968 psi | 83% | 2930 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 44,483 psi | 70% | 2828 fps | 97.8% |
| Hodgdon H4350 | <<locked>> | 80% | 46,934 psi | 74% | 2838 fps | 97.1% |
| Hodgdon H4831 | <<locked>> | 92% | 50,531 psi | 79% | 2927 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 92% | 49,574 psi | 78% | 2910 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,059 psi | 61% | 2680 fps | 99.7% |
| Hodgdon Retumbo | <<locked>> | 94% | 41,162 psi | 65% | 2884 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 43,482 psi | 68% | 2841 fps | 97.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,818 psi | 44% | 1677 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 53,548 psi | 84% | 2904 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,626 psi | 65% | 2713 fps | 96.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,311 psi | 74% | 2815 fps | 98.2% |
| IMR 4831 | <<locked>> | 80% | 41,278 psi | 65% | 2736 fps | 99.1% |
| IMR 4955 Enduron | <<locked>> | 90% | 48,994 psi | 77% | 2861 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 94% | 48,414 psi | 76% | 2956 fps | 95.8% |
| Lovex S062 | <<locked>> | 80% | 54,302 psi | 85% | 2904 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 45,455 psi | 71% | 2772 fps | 98.9% |
| Lovex S070 | <<locked>> | 80% | 43,714 psi | 69% | 2756 fps | 97.7% |
| Lovex S071 | <<locked>> | 84% | 32,489 psi | 51% | 2523 fps | 95% |
| Norma 204 | <<locked>> | 80% | 41,408 psi | 65% | 2746 fps | 95% |
| Norma MRP | 56.6 gr | 84% | 38,247 psi | 60% | 2766 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 42,366 psi | 66% | 2776 fps | 99.2% |
| Ramshot Grand | <<locked>> | 92% | 45,382 psi | 71% | 2907 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 41,133 psi | 64% | 2762 fps | 97.7% |
| Ramshot Magnum | <<locked>> | 90% | 38,305 psi | 60% | 2726 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,572 psi | 45% | 1722 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 52,692 psi | 83% | 2910 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,458 psi | 78% | 2963 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,960 psi | 67% | 2808 fps | 99.2% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,915 psi | 64% | 2812 fps | 98.7% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 38,218 psi | 60% | 2802 fps | 95.8% |
| Rottweil R 903 | <<locked>> | 80% | 50,227 psi | 79% | 2864 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 45,194 psi | 71% | 2795 fps | 95% |
| Rottweil R 905 | <<locked>> | 84% | 40,364 psi | 63% | 2746 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 46,224 psi | 72% | 2789 fps | 97.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,455 psi | 71% | 2772 fps | 98.9% |
| Shooters World Precision | <<locked>> | 80% | 54,302 psi | 85% | 2904 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 43,714 psi | 69% | 2756 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,836 psi | 80% | 2913 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,227 psi | 79% | 2746 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,425 psi | 70% | 2713 fps | 97.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 42,424 psi | 66% | 2792 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 50,154 psi | 79% | 2861 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 49,284 psi | 77% | 2841 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 39,189 psi | 61% | 2740 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 38,638 psi | 61% | 2674 fps | 95.5% |
| Vihtavuori N150 | <<locked>> | 80% | 47,747 psi | 75% | 2782 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,743 psi | 69% | 2769 fps | 99.4% |
| Vihtavuori N165 | <<locked>> | 88% | 40,234 psi | 63% | 2703 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 43,279 psi | 68% | 2776 fps | 99.2% |
| Vihtavuori N555 | <<locked>> | 80% | 35,070 psi | 55% | 2644 fps | 98.3% |
| Vihtavuori N560 | <<locked>> | 92% | 49,734 psi | 78% | 2995 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 96% | 46,543 psi | 73% | 2917 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,482 psi | 67% | 2730 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 44,730 psi | 70% | 2831 fps | 97.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 28,210 psi | 44% | 2562 fps | 98% |
| Winchester Supreme 780 | <<locked>> | 88% | 42,699 psi | 67% | 2759 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 81 powders for .270 WSM loaded with the .277 | 136gr | Peregrine VLR-5. Winchester StaBALL HD delivers the highest muzzle velocity at 3,169 fps; across all powders the maximum-charge window runs from 1,877 fps to 3,169 fps. ADI AR 2225 gives the best case fill at 100 %, and 81 of the 81 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 136.0 gr projectile in 0.277" calls for a 1:9.0 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. Alliant Reloder-26, Accurate High Country, Norma MRP rank at the top here: for .270 WSM with the .277 | 136gr | Peregrine VLR-5 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.