Load Specifications
Load data in caliber .270 Weath. Mag. with .277 | 130gr | CutEdge MTH bullet and 90 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, 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.
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: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 82% | 56,666 psi | 89% | 3012 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 54,694 psi | 86% | 3045 fps | 99% |
| Accurate 3100ᴾ | <<locked>> | 100% | 57,188 psi | 90% | 3153 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 57,464 psi | 90% | 3077 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 55,187 psi | 86% | 3146 fps | 100% |
| Accurate MAGPRO | <<locked>> | 98% | 56,028 psi | 88% | 3255 fps | 97% |
| ADI AR 2208 | <<locked>> | 84% | 54,056 psi | 85% | 3064 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 56,376 psi | 88% | 3199 fps | 98.8% |
| ADI AR 2213 | <<locked>> | 98% | 54,201 psi | 85% | 3196 fps | 97.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 57,667 psi | 90% | 3258 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 55,027 psi | 86% | 3091 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 55,274 psi | 87% | 3114 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 56,130 psi | 88% | 3209 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 53,606 psi | 84% | 3173 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 55,854 psi | 88% | 3189 fps | 98.8% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 57,305 psi | 90% | 3255 fps | 99.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 53,969 psi | 85% | 3166 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,615 psi | 73% | 3094 fps | 99.7% |
| Alliant Reloder-26 | <<locked>> | 96% | 54,317 psi | 85% | 3261 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 52,315 psi | 82% | 3169 fps | 98.3% |
| Bofors RP3 | <<locked>> | 84% | 55,709 psi | 87% | 3104 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 57,305 psi | 90% | 3255 fps | 99.1% |
| Bofors RP7 | <<locked>> | 88% | 55,114 psi | 86% | 3094 fps | 99.2% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 46,340 psi | 73% | 3031 fps | 96.5% |
| Hodgdon H380 | <<locked>> | 84% | 56,289 psi | 88% | 3130 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 57,566 psi | 90% | 3209 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 88% | 57,029 psi | 89% | 3163 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 96% | 54,157 psi | 85% | 3133 fps | 96.8% |
| Hodgdon H4831 SC | <<locked>> | 98% | 56,956 psi | 89% | 3179 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 56,420 psi | 88% | 3123 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 57,595 psi | 90% | 3159 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 45,745 psi | 72% | 3140 fps | 97.9% |
| Hodgdon Superformance | <<locked>> | 88% | 54,244 psi | 85% | 3186 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,535 psi | 57% | 1965 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 56,942 psi | 89% | 3100 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 56,014 psi | 88% | 3087 fps | 99.6% |
| IMR 4350 | <<locked>> | 92% | 56,463 psi | 88% | 3130 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 88% | 56,869 psi | 89% | 3127 fps | 99.6% |
| IMR 4831 | <<locked>> | 92% | 55,840 psi | 88% | 3140 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 56,710 psi | 89% | 3146 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 55,608 psi | 87% | 3120 fps | 97.3% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 55,274 psi | 87% | 3228 fps | 97.8% |
| Lovex S062 | <<locked>> | 84% | 57,290 psi | 90% | 3094 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 57,101 psi | 89% | 3120 fps | 100% |
| Lovex S070 | <<locked>> | 90% | 54,839 psi | 86% | 3107 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,224 psi | 74% | 2992 fps | 99.2% |
| Norma 203B | <<locked>> | 82% | 54,578 psi | 86% | 3100 fps | 100% |
| Norma 204 | <<locked>> | 92% | 57,595 psi | 90% | 3192 fps | 98.8% |
| Norma MRP | <<locked>> | 98% | 57,130 psi | 90% | 3281 fps | 99.8% |
| Norma URP | <<locked>> | 92% | 57,711 psi | 90% | 3189 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 55,419 psi | 87% | 3127 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 56,072 psi | 88% | 3251 fps | 98.3% |
| Ramshot Hunter | <<locked>> | 92% | 56,550 psi | 89% | 3192 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 50,067 psi | 78% | 3110 fps | 98.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,115 psi | 58% | 2008 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 56,043 psi | 88% | 3110 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 57,043 psi | 89% | 3222 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 55,187 psi | 86% | 3169 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 53,780 psi | 84% | 3202 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 45,890 psi | 72% | 3133 fps | 98.9% |
| Rottweil R 902 | <<locked>> | 82% | 55,361 psi | 87% | 3048 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 55,825 psi | 87% | 3100 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 54,302 psi | 85% | 3107 fps | 97.5% |
| Rottweil R 905 | <<locked>> | 96% | 55,071 psi | 86% | 3173 fps | 98.8% |
| Rottweil R 907 | <<locked>> | 88% | 55,114 psi | 86% | 3094 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 90% | 57,101 psi | 89% | 3120 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 57,290 psi | 90% | 3094 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 54,839 psi | 86% | 3107 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 54,157 psi | 85% | 3114 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 56,782 psi | 89% | 2976 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 56,623 psi | 89% | 3068 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 54,607 psi | 86% | 3166 fps | 98.7% |
| Somchem S355 | <<locked>> | 86% | 55,811 psi | 87% | 3097 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 56,173 psi | 88% | 3097 fps | 97.2% |
| Somchem S365 | <<locked>> | 94% | 57,493 psi | 90% | 3189 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 55,608 psi | 87% | 3143 fps | 99.3% |
| Vihtavuori N135 | <<locked>> | 82% | 56,014 psi | 88% | 3005 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 56,202 psi | 88% | 3018 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 57,348 psi | 90% | 3068 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 56,043 psi | 88% | 3127 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 55,056 psi | 86% | 3117 fps | 99% |
| Vihtavuori N540 | <<locked>> | 82% | 54,607 psi | 86% | 3018 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 55,056 psi | 86% | 3127 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 56,202 psi | 88% | 3196 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 57,217 psi | 90% | 3274 fps | 97.8% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 48,747 psi | 76% | 3104 fps | 96.3% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 55,956 psi | 88% | 3087 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 54,056 psi | 85% | 3150 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 49,850 psi | 78% | 3241 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 56,014 psi | 88% | 3140 fps | 98.7% |
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 2495 | <<locked>> | 80% | 53,113 psi | 83% | 2963 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 51,227 psi | 80% | 2989 fps | 98.6% |
| Accurate 3100 | <<locked>> | 84% | 32,547 psi | 51% | 2664 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 50,386 psi | 79% | 2972 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,769 psi | 61% | 2838 fps | 98.8% |
| Accurate MAGPRO | <<locked>> | 94% | 48,385 psi | 76% | 3114 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 47,761 psi | 75% | 2956 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 40,408 psi | 63% | 2887 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 94% | 47,123 psi | 74% | 3061 fps | 95.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 53,461 psi | 84% | 3192 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,327 psi | 76% | 2979 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,663 psi | 81% | 3054 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,811 psi | 59% | 2854 fps | 99% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,279 psi | 68% | 2989 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 40,118 psi | 63% | 2877 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 90% | 40,524 psi | 64% | 2933 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,485 psi | 43% | 2582 fps | 96.9% |
| Alliant Reloder-25 | <<locked>> | 88% | 31,357 psi | 49% | 2713 fps | 95.4% |
| Alliant Reloder-26 | 58.6 gr | 80% | 29,544 psi | 46% | 2700 fps | 95.4% |
| Bofors RP15 | <<locked>> | 92% | 39,972 psi | 63% | 2917 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 48,747 psi | 76% | 2992 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 40,524 psi | 64% | 2933 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 42,714 psi | 67% | 2858 fps | 97% |
| Hodgdon H1000 | <<locked>> | 98% | 43,163 psi | 68% | 2963 fps | 95.5% |
| Hodgdon H380 | <<locked>> | 80% | 49,168 psi | 77% | 3009 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 80% | 40,886 psi | 64% | 2894 fps | 97.2% |
| Hodgdon H4350 | <<locked>> | 80% | 43,830 psi | 69% | 2917 fps | 96.6% |
| Hodgdon H4831 | <<locked>> | 92% | 47,311 psi | 74% | 3005 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 94% | 49,472 psi | 78% | 3048 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,230 psi | 55% | 2733 fps | 99.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 53,838 psi | 84% | 3104 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 39,885 psi | 63% | 2995 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 39,914 psi | 63% | 2904 fps | 96.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,253 psi | 43% | 1759 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,241 psi | 79% | 2992 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 52,446 psi | 82% | 3025 fps | 99.2% |
| IMR 4350 | <<locked>> | 80% | 38,363 psi | 60% | 2779 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,121 psi | 69% | 2890 fps | 97.8% |
| IMR 4831 | <<locked>> | 80% | 37,188 psi | 58% | 2785 fps | 98.6% |
| IMR 4895 | <<locked>> | 80% | 53,026 psi | 83% | 3084 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 46,035 psi | 72% | 2943 fps | 95% |
| IMR 7828 SSC | <<locked>> | 94% | 44,962 psi | 70% | 3028 fps | 95.3% |
| Lovex S062 | <<locked>> | 80% | 50,343 psi | 79% | 2986 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,553 psi | 65% | 2835 fps | 98.4% |
| Lovex S070 | <<locked>> | 80% | 39,784 psi | 62% | 2815 fps | 97% |
| Lovex S071 | <<locked>> | 88% | 31,705 psi | 50% | 2641 fps | 95% |
| Norma 203B | <<locked>> | 80% | 51,024 psi | 80% | 3041 fps | 100% |
| Norma 204 | <<locked>> | 82% | 40,712 psi | 64% | 2871 fps | 95.1% |
| Norma MRP | 61.1 gr | 86% | 36,869 psi | 58% | 2874 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 38,595 psi | 60% | 2835 fps | 98.7% |
| Ramshot Big Game | <<locked>> | 80% | 51,590 psi | 81% | 3064 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 44,962 psi | 70% | 3041 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 37,550 psi | 59% | 2822 fps | 97% |
| Ramshot Magnum | <<locked>> | 92% | 36,912 psi | 58% | 2828 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,630 psi | 43% | 1798 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,153 psi | 77% | 2989 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,021 psi | 72% | 3045 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,696 psi | 61% | 2858 fps | 98.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,420 psi | 59% | 2867 fps | 98.1% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 36,840 psi | 58% | 2907 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 52,025 psi | 82% | 2995 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,803 psi | 72% | 2933 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 44,715 psi | 70% | 2927 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 86% | 39,044 psi | 61% | 2854 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 42,714 psi | 67% | 2858 fps | 97% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,553 psi | 65% | 2835 fps | 98.4% |
| Shooters World Precision | <<locked>> | 80% | 50,343 psi | 79% | 2986 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,784 psi | 62% | 2815 fps | 97% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,326 psi | 74% | 2995 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,949 psi | 74% | 2828 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,654 psi | 64% | 2772 fps | 97.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 41,568 psi | 65% | 2913 fps | 95.9% |
| Somchem S355 | <<locked>> | 80% | 46,050 psi | 72% | 2933 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 49,008 psi | 77% | 2976 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 35,070 psi | 55% | 2785 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 37,043 psi | 58% | 2776 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 80% | 52,533 psi | 82% | 2953 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 52,837 psi | 83% | 2972 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 44,063 psi | 69% | 2854 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,045 psi | 63% | 2835 fps | 99% |
| Vihtavuori N165 | <<locked>> | 90% | 39,233 psi | 61% | 2815 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 51,126 psi | 80% | 2966 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,479 psi | 62% | 2835 fps | 98.7% |
| Vihtavuori N555 | <<locked>> | 80% | 30,414 psi | 48% | 2661 fps | 96.9% |
| Vihtavuori N560 | 65.4 gr | 92% | 46,195 psi | 72% | 3068 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 98% | 45,426 psi | 71% | 3038 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,160 psi | 61% | 2799 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 41,075 psi | 64% | 2897 fps | 97.2% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,221 psi | 38% | 2543 fps | 95.5% |
| Winchester Supreme 780 | <<locked>> | 90% | 42,032 psi | 66% | 2884 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 90 powders for .270 Weath. Mag. loaded with the .277 | 130gr | CutEdge MTH. Norma MRP delivers the highest muzzle velocity at 3,281 fps; across all powders the maximum-charge window runs from 1,965 fps to 3,281 fps. Accurate 3100 gives the best case fill at 100 %, and 90 of the 90 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 130.0 gr projectile in 0.277" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-22, Alliant Reloder-23 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, Norma MRP, Vihtavuori N560 rank at the top here: for .270 Weath. Mag. with the .277 | 130gr | CutEdge MTH 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.