Load Specifications
Load data in caliber .270 Weath. Mag. with .277 | 140gr | Norma Tipstrike bullet and 84 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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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 96% | 54,331 psi | 85% | 3005 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 56,028 psi | 88% | 3048 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 55,637 psi | 87% | 3159 fps | 98.7% |
| Accurate MAGPRO | <<locked>> | 96% | 56,681 psi | 89% | 3163 fps | 97.8% |
| ADI AR 2208 | <<locked>> | 84% | 57,493 psi | 90% | 3009 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 56,753 psi | 89% | 3104 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 96% | 54,418 psi | 85% | 3100 fps | 98.2% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 45,571 psi | 71% | 2923 fps | 96.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 40,422 psi | 63% | 2881 fps | 98.3% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 56,826 psi | 89% | 3097 fps | 99.3% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 56,826 psi | 89% | 3097 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 55,158 psi | 86% | 2979 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 56,550 psi | 89% | 3104 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 54,288 psi | 85% | 3068 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 56,086 psi | 88% | 3087 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 96% | 54,085 psi | 85% | 3097 fps | 99.2% |
| Alliant Reloder-23 | <<locked>> | 98% | 55,013 psi | 86% | 3071 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 50,749 psi | 80% | 3071 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 55,361 psi | 87% | 3166 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 98% | 56,826 psi | 89% | 3061 fps | 95.9% |
| Bofors RP15ᴾ | <<locked>> | 100% | 56,782 psi | 89% | 3140 fps | 99.4% |
| Bofors RP3 | <<locked>> | 82% | 56,144 psi | 88% | 2999 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 46,760 psi | 73% | 2995 fps | 97.4% |
| Bofors RP5 | <<locked>> | 96% | 54,085 psi | 85% | 3097 fps | 99.2% |
| Bofors RP7 | <<locked>> | 86% | 55,376 psi | 87% | 2995 fps | 99.6% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 50,227 psi | 79% | 3018 fps | 98.3% |
| Hodgdon H380 | <<locked>> | 82% | 56,231 psi | 88% | 3018 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 57,711 psi | 90% | 3104 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 86% | 57,145 psi | 90% | 3061 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 94% | 54,607 psi | 86% | 3041 fps | 97.7% |
| Hodgdon H4831 SC | <<locked>> | 96% | 57,087 psi | 89% | 3081 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 57,174 psi | 90% | 3022 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 49,821 psi | 78% | 3133 fps | 99.4% |
| Hodgdon Superformance | <<locked>> | 86% | 54,505 psi | 85% | 3084 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,796 psi | 58% | 1896 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 56,942 psi | 89% | 2989 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 56,594 psi | 89% | 3031 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 86% | 56,666 psi | 89% | 3018 fps | 99.8% |
| IMR 4831 | <<locked>> | 90% | 56,217 psi | 88% | 3035 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 55,782 psi | 87% | 3025 fps | 98% |
| IMR 7828 SSC | <<locked>> | 98% | 55,666 psi | 87% | 3136 fps | 98.5% |
| Lovex S062 | <<locked>> | 82% | 57,319 psi | 90% | 2979 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 57,261 psi | 90% | 3015 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 55,201 psi | 87% | 3009 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 51,706 psi | 81% | 2963 fps | 99.9% |
| Norma 204 | <<locked>> | 90% | 57,609 psi | 90% | 3087 fps | 99.3% |
| Norma 217ᴾ | <<locked>> | 100% | 35,897 psi | 56% | 2795 fps | 96.1% |
| Norma MRP | <<locked>> | 96% | 57,667 psi | 90% | 3182 fps | 100% |
| Norma URP | <<locked>> | 88% | 54,375 psi | 85% | 3028 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 56,637 psi | 89% | 3159 fps | 99% |
| Ramshot Hunter | <<locked>> | 90% | 56,855 psi | 89% | 3087 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 54,795 psi | 86% | 3091 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,695 psi | 59% | 1942 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 56,159 psi | 88% | 3005 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 57,740 psi | 90% | 3114 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 55,854 psi | 88% | 3071 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 54,259 psi | 85% | 3104 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 50,299 psi | 79% | 3130 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 84% | 56,550 psi | 89% | 2999 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 54,549 psi | 85% | 3012 fps | 98.2% |
| Rottweil R 905 | <<locked>> | 94% | 55,724 psi | 87% | 3077 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 86% | 55,376 psi | 87% | 2995 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 88% | 57,261 psi | 90% | 3015 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 57,319 psi | 90% | 2979 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 55,201 psi | 87% | 3009 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 54,215 psi | 85% | 3002 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 56,637 psi | 89% | 2864 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 56,666 psi | 89% | 2966 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 55,259 psi | 87% | 3074 fps | 99.3% |
| Somchem S355 | <<locked>> | 84% | 56,043 psi | 88% | 2989 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 56,376 psi | 88% | 3005 fps | 97.9% |
| Somchem S365 | <<locked>> | 90% | 54,447 psi | 85% | 3031 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 56,130 psi | 88% | 3048 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 86% | 57,435 psi | 90% | 2959 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 56,434 psi | 88% | 3022 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 55,767 psi | 87% | 3025 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 88% | 55,593 psi | 87% | 3028 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 57,392 psi | 90% | 3100 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 57,624 psi | 90% | 3176 fps | 98.5% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 53,200 psi | 83% | 3084 fps | 98% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 55,912 psi | 88% | 2979 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 54,244 psi | 85% | 3048 fps | 99.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 55,854 psi | 88% | 3212 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 56,318 psi | 88% | 3045 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% | 31,633 psi | 50% | 2546 fps | 95.9% |
| Accurate 4350 | <<locked>> | 80% | 42,656 psi | 67% | 2818 fps | 99.8% |
| Accurate High Country | 60.8 gr | 86% | 42,163 psi | 66% | 2900 fps | 95.6% |
| Accurate MAGPRO | <<locked>> | 90% | 45,803 psi | 72% | 2963 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 50,879 psi | 80% | 2904 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 38,101 psi | 60% | 2736 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 90% | 44,454 psi | 70% | 2910 fps | 95.9% |
| ADI AR 2217 | <<locked>> | 98% | 42,496 psi | 67% | 2854 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 94% | 33,315 psi | 52% | 2687 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 38,392 psi | 60% | 2740 fps | 95.5% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 38,392 psi | 60% | 2740 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,895 psi | 81% | 2930 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,973 psi | 64% | 2828 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,949 psi | 74% | 2949 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 38,029 psi | 60% | 2733 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 86% | 38,682 psi | 61% | 2792 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,356 psi | 48% | 2579 fps | 98.8% |
| Alliant Reloder-25 | <<locked>> | 84% | 30,298 psi | 47% | 2592 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 80% | 32,750 psi | 51% | 2707 fps | 97.8% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 53,258 psi | 83% | 2999 fps | 95% |
| Bofors RP15 | <<locked>> | 88% | 38,174 psi | 60% | 2779 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 52,750 psi | 83% | 2946 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 40,828 psi | 64% | 2874 fps | 95.7% |
| Bofors RP5 | <<locked>> | 86% | 38,682 psi | 61% | 2792 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 45,876 psi | 72% | 2825 fps | 98.4% |
| Hodgdon H1000 | <<locked>> | 94% | 40,915 psi | 64% | 2825 fps | 95.7% |
| Hodgdon H380 | <<locked>> | 80% | 52,605 psi | 82% | 2963 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 44,353 psi | 70% | 2867 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 80% | 47,108 psi | 74% | 2884 fps | 98.1% |
| Hodgdon H4831 | <<locked>> | 88% | 44,425 psi | 70% | 2854 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 88% | 43,540 psi | 68% | 2835 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,508 psi | 60% | 2707 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 90% | 35,868 psi | 56% | 2795 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 43,598 psi | 68% | 2887 fps | 98.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,659 psi | 43% | 1696 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 53,548 psi | 84% | 2940 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,379 psi | 65% | 2753 fps | 97.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,094 psi | 74% | 2851 fps | 98.9% |
| IMR 4831 | <<locked>> | 80% | 40,640 psi | 64% | 2762 fps | 99.6% |
| IMR 4955 Enduron | <<locked>> | 86% | 43,366 psi | 68% | 2795 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 90% | 42,583 psi | 67% | 2881 fps | 95.5% |
| Lovex S062 | <<locked>> | 80% | 53,911 psi | 84% | 2930 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 44,730 psi | 70% | 2802 fps | 99.4% |
| Lovex S070 | <<locked>> | 80% | 43,033 psi | 67% | 2785 fps | 98.5% |
| Lovex S071 | <<locked>> | 84% | 30,980 psi | 49% | 2530 fps | 95.6% |
| Norma 204 | <<locked>> | 80% | 41,002 psi | 64% | 2782 fps | 96.1% |
| Norma 217 | <<locked>> | 98% | 33,518 psi | 53% | 2730 fps | 95% |
| Norma MRP | 56.5 gr | 80% | 32,837 psi | 51% | 2671 fps | 95% |
| Norma URP | <<locked>> | 80% | 41,974 psi | 66% | 2805 fps | 99.7% |
| Ramshot Grand | <<locked>> | 90% | 42,482 psi | 67% | 2894 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 40,741 psi | 64% | 2795 fps | 98.6% |
| Ramshot Magnum | <<locked>> | 88% | 35,157 psi | 55% | 2697 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,137 psi | 44% | 1736 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 52,373 psi | 82% | 2946 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,850 psi | 78% | 2999 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,482 psi | 67% | 2838 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,799 psi | 64% | 2851 fps | 99.4% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 35,172 psi | 55% | 2776 fps | 96.2% |
| Rottweil R 903 | <<locked>> | 80% | 49,617 psi | 78% | 2890 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 42,279 psi | 66% | 2779 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 82% | 37,304 psi | 58% | 2717 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 45,876 psi | 72% | 2825 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,730 psi | 70% | 2802 fps | 99.4% |
| Shooters World Precision | <<locked>> | 80% | 53,911 psi | 84% | 2930 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 43,033 psi | 67% | 2785 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,763 psi | 80% | 2946 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,995 psi | 78% | 2772 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,801 psi | 69% | 2746 fps | 98.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 36,956 psi | 58% | 2713 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 49,559 psi | 78% | 2887 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 46,006 psi | 72% | 2825 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 38,725 psi | 61% | 2762 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 35,549 psi | 56% | 2644 fps | 95.6% |
| Vihtavuori N150 | <<locked>> | 80% | 47,442 psi | 74% | 2808 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,424 psi | 68% | 2802 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 84% | 35,056 psi | 55% | 2625 fps | 95% |
| Vihtavuori N550 | <<locked>> | 80% | 42,714 psi | 67% | 2802 fps | 99.6% |
| Vihtavuori N555 | <<locked>> | 80% | 33,924 psi | 53% | 2657 fps | 98.8% |
| Vihtavuori N560 | 62.2 gr | 88% | 43,787 psi | 69% | 2920 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 94% | 43,497 psi | 68% | 2900 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,395 psi | 66% | 2762 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 44,353 psi | 70% | 2867 fps | 98.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,861 psi | 42% | 2572 fps | 98.6% |
| Winchester Supreme 780 | <<locked>> | 84% | 37,159 psi | 58% | 2680 fps | 95.1% |
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 84 powders for .270 Weath. Mag. loaded with the .277 | 140gr | Norma Tipstrike. Winchester StaBALL HD delivers the highest muzzle velocity at 3,212 fps; across all powders the maximum-charge window runs from 1,896 fps to 3,212 fps. ADI AR 2217 gives the best case fill at 100 %, and 84 of the 84 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 56–90 %, 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 | Norma Tipstrike 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.