Load Specifications
Load data in caliber .270 Weath. Mag. with .277 | 140gr | Remington SP Extended-Range BT bullet and 83 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate High Country, Norma MRP and Vihtavuori N560.
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: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 96% | 54,273 psi | 85% | 3005 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 55,941 psi | 88% | 3048 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 55,579 psi | 87% | 3159 fps | 98.6% |
| Accurate MAGPRO | <<locked>> | 96% | 56,565 psi | 89% | 3159 fps | 97.8% |
| ADI AR 2208 | <<locked>> | 84% | 57,392 psi | 90% | 3005 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 56,681 psi | 89% | 3100 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 96% | 54,346 psi | 85% | 3100 fps | 98.2% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 45,513 psi | 71% | 2920 fps | 96.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 40,364 psi | 63% | 2877 fps | 98.3% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 56,753 psi | 89% | 3097 fps | 99.3% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 56,753 psi | 89% | 3097 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 55,071 psi | 86% | 2979 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 56,449 psi | 88% | 3100 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 54,201 psi | 85% | 3068 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 56,014 psi | 88% | 3084 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 96% | 54,027 psi | 85% | 3097 fps | 99.2% |
| Alliant Reloder-23 | <<locked>> | 98% | 54,940 psi | 86% | 3068 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 50,647 psi | 79% | 3068 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 55,274 psi | 87% | 3166 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 98% | 56,565 psi | 89% | 3054 fps | 95.8% |
| Bofors RP15ᴾ | <<locked>> | 100% | 56,695 psi | 89% | 3140 fps | 99.4% |
| Bofors RP3 | <<locked>> | 82% | 56,043 psi | 88% | 2995 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 46,673 psi | 73% | 2995 fps | 97.4% |
| Bofors RP5 | <<locked>> | 96% | 54,027 psi | 85% | 3097 fps | 99.2% |
| Bofors RP7 | <<locked>> | 86% | 55,288 psi | 87% | 2992 fps | 99.6% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 50,140 psi | 79% | 3018 fps | 98.3% |
| Hodgdon H380 | <<locked>> | 82% | 56,130 psi | 88% | 3015 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 57,638 psi | 90% | 3100 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 86% | 57,058 psi | 89% | 3058 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 94% | 54,273 psi | 85% | 3035 fps | 97.6% |
| Hodgdon H4831 SC | <<locked>> | 96% | 57,043 psi | 89% | 3077 fps | 98% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 57,058 psi | 89% | 3018 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 49,777 psi | 78% | 3130 fps | 99.4% |
| Hodgdon Superformance | <<locked>> | 86% | 54,157 psi | 85% | 3077 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,883 psi | 58% | 1896 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 56,826 psi | 89% | 2989 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 56,521 psi | 89% | 3028 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 86% | 56,579 psi | 89% | 3015 fps | 99.8% |
| IMR 4831 | <<locked>> | 90% | 56,086 psi | 88% | 3031 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 55,738 psi | 87% | 3025 fps | 98% |
| IMR 7828 SSC | <<locked>> | 98% | 55,622 psi | 87% | 3133 fps | 98.5% |
| Lovex S062 | <<locked>> | 82% | 57,217 psi | 90% | 2979 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 57,174 psi | 90% | 3012 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 55,129 psi | 86% | 3009 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 51,648 psi | 81% | 2963 fps | 99.9% |
| Norma 204 | <<locked>> | 90% | 57,537 psi | 90% | 3087 fps | 99.3% |
| Norma MRP | <<locked>> | 96% | 57,609 psi | 90% | 3182 fps | 100% |
| Norma URP | <<locked>> | 88% | 54,288 psi | 85% | 3028 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 56,275 psi | 88% | 3153 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 90% | 56,782 psi | 89% | 3087 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 54,447 psi | 85% | 3084 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,550 psi | 59% | 1939 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 56,072 psi | 88% | 3005 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 57,566 psi | 90% | 3110 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 55,738 psi | 87% | 3068 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 54,186 psi | 85% | 3100 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 49,995 psi | 78% | 3123 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 84% | 56,449 psi | 88% | 2995 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 54,476 psi | 85% | 3009 fps | 98.2% |
| Rottweil R 905 | <<locked>> | 94% | 55,651 psi | 87% | 3077 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 86% | 55,288 psi | 87% | 2992 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 88% | 57,174 psi | 90% | 3012 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 57,217 psi | 90% | 2979 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 55,129 psi | 86% | 3009 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 54,128 psi | 85% | 2999 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 56,536 psi | 89% | 2861 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 56,550 psi | 89% | 2966 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 55,201 psi | 87% | 3071 fps | 99.2% |
| Somchem S355 | <<locked>> | 84% | 55,941 psi | 88% | 2986 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 56,057 psi | 88% | 2999 fps | 97.8% |
| Somchem S365 | <<locked>> | 90% | 54,360 psi | 85% | 3031 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 56,028 psi | 88% | 3045 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 86% | 57,348 psi | 90% | 2956 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 56,347 psi | 88% | 3022 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 55,419 psi | 87% | 3018 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 88% | 55,521 psi | 87% | 3028 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 57,319 psi | 90% | 3097 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 57,537 psi | 90% | 3176 fps | 98.4% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 53,156 psi | 83% | 3081 fps | 97.9% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 55,854 psi | 88% | 2976 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 54,172 psi | 85% | 3045 fps | 99.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 55,738 psi | 87% | 3209 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 56,231 psi | 88% | 3041 fps | 99.2% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 31,546 psi | 49% | 2543 fps | 95.9% |
| Accurate 4350 | <<locked>> | 80% | 42,554 psi | 67% | 2815 fps | 99.8% |
| Accurate High Country | 60.7 gr | 86% | 42,090 psi | 66% | 2900 fps | 95.6% |
| Accurate MAGPRO | <<locked>> | 90% | 45,759 psi | 72% | 2963 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 50,778 psi | 80% | 2904 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 38,058 psi | 60% | 2736 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 90% | 44,382 psi | 70% | 2907 fps | 95.9% |
| ADI AR 2217 | <<locked>> | 98% | 42,453 psi | 67% | 2854 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 94% | 33,286 psi | 52% | 2684 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 38,305 psi | 60% | 2736 fps | 95.4% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 38,305 psi | 60% | 2736 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,779 psi | 81% | 2927 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,886 psi | 64% | 2825 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,847 psi | 73% | 2946 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 37,971 psi | 60% | 2730 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 86% | 38,609 psi | 61% | 2789 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,284 psi | 47% | 2575 fps | 98.8% |
| Alliant Reloder-25 | <<locked>> | 84% | 30,240 psi | 47% | 2592 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 80% | 32,677 psi | 51% | 2703 fps | 97.8% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 53,214 psi | 83% | 2995 fps | 95% |
| Bofors RP15 | <<locked>> | 88% | 38,101 psi | 60% | 2776 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 52,649 psi | 83% | 2943 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 40,770 psi | 64% | 2871 fps | 95.7% |
| Bofors RP5 | <<locked>> | 86% | 38,609 psi | 61% | 2789 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 45,774 psi | 72% | 2822 fps | 98.4% |
| Hodgdon H1000 | <<locked>> | 94% | 40,872 psi | 64% | 2825 fps | 95.7% |
| Hodgdon H380 | <<locked>> | 80% | 52,518 psi | 82% | 2959 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 44,280 psi | 69% | 2864 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 80% | 47,021 psi | 74% | 2884 fps | 98.1% |
| Hodgdon H4831 | <<locked>> | 88% | 44,309 psi | 69% | 2851 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 90% | 46,586 psi | 73% | 2897 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,450 psi | 60% | 2707 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 90% | 35,824 psi | 56% | 2795 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 43,337 psi | 68% | 2881 fps | 98.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,514 psi | 43% | 1693 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 53,432 psi | 84% | 2936 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,292 psi | 65% | 2749 fps | 97.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,021 psi | 74% | 2848 fps | 98.9% |
| IMR 4831 | <<locked>> | 80% | 40,538 psi | 64% | 2759 fps | 99.6% |
| IMR 4955 Enduron | <<locked>> | 86% | 43,294 psi | 68% | 2792 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 90% | 42,525 psi | 67% | 2881 fps | 95.4% |
| Lovex S062 | <<locked>> | 80% | 53,824 psi | 84% | 2930 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 44,686 psi | 70% | 2799 fps | 99.4% |
| Lovex S070 | <<locked>> | 80% | 42,989 psi | 67% | 2785 fps | 98.5% |
| Lovex S071 | <<locked>> | 84% | 30,937 psi | 48% | 2526 fps | 95.6% |
| Norma 204 | <<locked>> | 80% | 40,915 psi | 64% | 2779 fps | 96.1% |
| Norma MRP | 57.8 gr | 82% | 35,070 psi | 55% | 2733 fps | 96% |
| Norma URP | <<locked>> | 80% | 41,887 psi | 66% | 2805 fps | 99.6% |
| Ramshot Grand | <<locked>> | 90% | 42,192 psi | 66% | 2887 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 40,654 psi | 64% | 2792 fps | 98.5% |
| Ramshot Magnum | <<locked>> | 88% | 35,114 psi | 55% | 2694 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,181 psi | 44% | 1736 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 52,286 psi | 82% | 2943 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,748 psi | 78% | 2995 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,395 psi | 66% | 2835 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,712 psi | 64% | 2848 fps | 99.4% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 35,099 psi | 55% | 2772 fps | 96.1% |
| Rottweil R 903 | <<locked>> | 80% | 49,516 psi | 78% | 2890 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 42,206 psi | 66% | 2776 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 82% | 37,217 psi | 58% | 2717 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 45,774 psi | 72% | 2822 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,686 psi | 70% | 2799 fps | 99.4% |
| Shooters World Precision | <<locked>> | 80% | 53,824 psi | 84% | 2930 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 42,989 psi | 67% | 2785 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,662 psi | 79% | 2943 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,893 psi | 78% | 2769 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,714 psi | 69% | 2743 fps | 98.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 36,883 psi | 58% | 2710 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 49,458 psi | 78% | 2884 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 45,948 psi | 72% | 2822 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 38,667 psi | 61% | 2762 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 35,491 psi | 56% | 2644 fps | 95.6% |
| Vihtavuori N150 | <<locked>> | 80% | 47,340 psi | 74% | 2808 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,337 psi | 68% | 2802 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 84% | 34,983 psi | 55% | 2621 fps | 95% |
| Vihtavuori N550 | <<locked>> | 80% | 42,627 psi | 67% | 2802 fps | 99.6% |
| Vihtavuori N555 | <<locked>> | 80% | 33,823 psi | 53% | 2654 fps | 98.7% |
| Vihtavuori N560 | 62.1 gr | 88% | 43,729 psi | 69% | 2920 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 94% | 43,424 psi | 68% | 2900 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,322 psi | 66% | 2762 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 44,280 psi | 69% | 2864 fps | 98.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,803 psi | 42% | 2572 fps | 98.6% |
| Winchester Supreme 780 | <<locked>> | 84% | 37,086 psi | 58% | 2680 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 83 powders for .270 Weath. Mag. loaded with the .277 | 140gr | Remington SP Extended-Range BT. Winchester StaBALL HD delivers the highest muzzle velocity at 3,209 fps; across all powders the maximum-charge window runs from 1,896 fps to 3,209 fps. ADI AR 2217 gives the best case fill at 100 %, and 83 of the 83 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 140.0 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. Accurate High Country, Norma MRP, Vihtavuori N560 rank at the top here: for .270 Weath. Mag. with the .277 | 140gr | Remington SP Extended-Range 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.