Load Specifications
Load data in caliber .270 Weath. Mag. with .277 | 130gr | Barnes X BT bullet and 76 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.
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Max Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 96% | 55,216 psi | 87% | 3100 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 56,826 psi | 89% | 3146 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 56,608 psi | 89% | 3245 fps | 97% |
| ADI AR 2208 | <<locked>> | 84% | 57,493 psi | 90% | 3097 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 56,536 psi | 89% | 3182 fps | 98.8% |
| ADI AR 2213 | <<locked>> | 96% | 54,317 psi | 85% | 3179 fps | 97.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 41,176 psi | 65% | 2963 fps | 97.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 55,608 psi | 87% | 3074 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 56,579 psi | 89% | 3196 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 54,230 psi | 85% | 3159 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 56,260 psi | 88% | 3173 fps | 98.8% |
| Alliant Reloder-22 | <<locked>> | 96% | 54,157 psi | 85% | 3182 fps | 98.7% |
| Alliant Reloder-23 | <<locked>> | 98% | 54,955 psi | 86% | 3163 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 51,111 psi | 80% | 3163 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 55,216 psi | 87% | 3258 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 56,681 psi | 89% | 3222 fps | 98.9% |
| Bofors RP3 | <<locked>> | 82% | 57,246 psi | 90% | 3100 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 47,152 psi | 74% | 3081 fps | 96.7% |
| Bofors RP5 | <<locked>> | 96% | 54,157 psi | 85% | 3182 fps | 98.7% |
| Bofors RP7 | <<locked>> | 86% | 55,796 psi | 87% | 3081 fps | 99.2% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 50,401 psi | 79% | 3094 fps | 97.5% |
| Hodgdon H380 | <<locked>> | 82% | 57,000 psi | 89% | 3114 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 54,433 psi | 85% | 3133 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 86% | 57,116 psi | 90% | 3143 fps | 99% |
| Hodgdon H4831 | <<locked>> | 94% | 54,563 psi | 86% | 3120 fps | 96.8% |
| Hodgdon H4831 SC | <<locked>> | 96% | 56,913 psi | 89% | 3159 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 57,203 psi | 90% | 3110 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 50,009 psi | 78% | 3212 fps | 98.8% |
| Hodgdon Superformance | <<locked>> | 86% | 54,389 psi | 85% | 3166 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,101 psi | 58% | 1962 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 57,130 psi | 90% | 3081 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 56,608 psi | 89% | 3114 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 86% | 56,985 psi | 89% | 3107 fps | 99.6% |
| IMR 4831 | <<locked>> | 90% | 56,826 psi | 89% | 3133 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 55,796 psi | 87% | 3104 fps | 97.2% |
| IMR 7828 SSC | <<locked>> | 98% | 55,767 psi | 87% | 3215 fps | 97.8% |
| Lovex S065 | <<locked>> | 88% | 57,711 psi | 90% | 3107 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 55,999 psi | 88% | 3100 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 52,707 psi | 83% | 3061 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 57,537 psi | 90% | 3173 fps | 98.8% |
| Norma MRP | <<locked>> | 96% | 57,493 psi | 90% | 3271 fps | 99.8% |
| Norma URP | <<locked>> | 88% | 54,897 psi | 86% | 3123 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 56,376 psi | 88% | 3238 fps | 98.3% |
| Ramshot Hunter | <<locked>> | 90% | 56,884 psi | 89% | 3176 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 54,737 psi | 86% | 3169 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,826 psi | 59% | 2008 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 56,434 psi | 88% | 3094 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 57,363 psi | 90% | 3205 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 56,420 psi | 88% | 3166 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 54,172 psi | 85% | 3189 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 50,546 psi | 79% | 3209 fps | 99.5% |
| Rottweil R 903 | <<locked>> | 84% | 57,319 psi | 90% | 3094 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 54,592 psi | 86% | 3091 fps | 97.5% |
| Rottweil R 905 | <<locked>> | 94% | 55,840 psi | 88% | 3163 fps | 98.8% |
| Rottweil R 907 | <<locked>> | 86% | 55,796 psi | 87% | 3081 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 88% | 57,711 psi | 90% | 3107 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 55,999 psi | 88% | 3100 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 54,650 psi | 86% | 3097 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 56,826 psi | 89% | 2956 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 57,174 psi | 90% | 3051 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 55,376 psi | 87% | 3156 fps | 98.8% |
| Somchem S355 | <<locked>> | 84% | 56,855 psi | 89% | 3087 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 56,550 psi | 89% | 3084 fps | 97.2% |
| Somchem S365 | <<locked>> | 90% | 54,665 psi | 86% | 3127 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 56,739 psi | 89% | 3136 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 84% | 54,534 psi | 85% | 3005 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 56,579 psi | 89% | 3110 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 55,869 psi | 88% | 3107 fps | 99.1% |
| Vihtavuori N550 | <<locked>> | 88% | 55,999 psi | 88% | 3120 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 54,491 psi | 85% | 3143 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 57,348 psi | 90% | 3258 fps | 97.7% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 53,809 psi | 84% | 3176 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 55,825 psi | 87% | 3068 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 54,433 psi | 85% | 3133 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 55,013 psi | 86% | 3304 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 56,304 psi | 88% | 3123 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 3100 | <<locked>> | 80% | 33,431 psi | 52% | 2654 fps | 95.7% |
| Accurate 4350 | <<locked>> | 80% | 43,990 psi | 69% | 2920 fps | 99.6% |
| Accurate MAGPRO | <<locked>> | 92% | 49,400 psi | 77% | 3110 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 51,169 psi | 80% | 2992 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 41,394 psi | 65% | 2884 fps | 95.4% |
| ADI AR 2213 | <<locked>> | 90% | 44,889 psi | 70% | 2989 fps | 95% |
| ADI AR 2225 | <<locked>> | 96% | 36,593 psi | 57% | 2838 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 52,417 psi | 82% | 3025 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,481 psi | 65% | 2917 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 47,210 psi | 74% | 3041 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 41,321 psi | 65% | 2881 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 86% | 39,450 psi | 62% | 2881 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,604 psi | 50% | 2677 fps | 98.6% |
| Alliant Reloder-25 | <<locked>> | 84% | 31,546 psi | 49% | 2690 fps | 95.4% |
| Alliant Reloder-26 | 58.2 gr | 80% | 34,185 psi | 54% | 2812 fps | 97.5% |
| Bofors RP15 | <<locked>> | 90% | 41,568 psi | 65% | 2930 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 53,679 psi | 84% | 3045 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 44,367 psi | 70% | 3025 fps | 95.9% |
| Bofors RP5 | <<locked>> | 86% | 39,450 psi | 62% | 2881 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 46,615 psi | 73% | 2913 fps | 97.9% |
| Hodgdon H1000 | <<locked>> | 96% | 44,367 psi | 70% | 2966 fps | 95.8% |
| Hodgdon H380 | <<locked>> | 80% | 53,505 psi | 84% | 3058 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 44,947 psi | 70% | 2956 fps | 98.1% |
| Hodgdon H4350 | <<locked>> | 80% | 47,500 psi | 74% | 2969 fps | 97.5% |
| Hodgdon H4831 | <<locked>> | 90% | 47,834 psi | 75% | 2995 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 90% | 46,963 psi | 74% | 2976 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,320 psi | 62% | 2799 fps | 99.8% |
| Hodgdon Retumbo | <<locked>> | 92% | 39,175 psi | 61% | 2949 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 44,034 psi | 69% | 2972 fps | 97.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,804 psi | 44% | 1755 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 53,824 psi | 84% | 3028 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,989 psi | 66% | 2835 fps | 96.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,703 psi | 75% | 2940 fps | 98.5% |
| IMR 4831 | <<locked>> | 80% | 41,669 psi | 65% | 2858 fps | 99.4% |
| IMR 4955 Enduron | <<locked>> | 88% | 46,659 psi | 73% | 2933 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 92% | 45,992 psi | 72% | 3028 fps | 95.5% |
| Lovex S065 | <<locked>> | 80% | 45,658 psi | 72% | 2894 fps | 99.1% |
| Lovex S070 | <<locked>> | 80% | 44,077 psi | 69% | 2881 fps | 98% |
| Lovex S071 | <<locked>> | 84% | 32,822 psi | 51% | 2638 fps | 95.5% |
| Norma 204 | <<locked>> | 80% | 41,814 psi | 66% | 2871 fps | 95.4% |
| Norma MRP | 57.9 gr | 82% | 36,390 psi | 57% | 2835 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 42,772 psi | 67% | 2900 fps | 99.4% |
| Ramshot Grand | <<locked>> | 92% | 45,992 psi | 72% | 3038 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 41,553 psi | 65% | 2890 fps | 98.1% |
| Ramshot Magnum | <<locked>> | 90% | 38,696 psi | 61% | 2848 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,514 psi | 45% | 1801 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 53,055 psi | 83% | 3035 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,879 psi | 78% | 3091 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,395 psi | 68% | 2933 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,394 psi | 65% | 2936 fps | 99% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 36,245 psi | 57% | 2864 fps | 95.4% |
| Rottweil R 903 | <<locked>> | 80% | 50,618 psi | 79% | 2989 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 45,484 psi | 71% | 2920 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 84% | 40,741 psi | 64% | 2867 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 46,615 psi | 73% | 2913 fps | 97.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,658 psi | 72% | 2894 fps | 99.1% |
| Shooters World SW4350 | <<locked>> | 80% | 44,077 psi | 69% | 2881 fps | 98% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 51,300 psi | 80% | 3041 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,633 psi | 79% | 2864 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,759 psi | 70% | 2831 fps | 98% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 40,379 psi | 63% | 2864 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 50,386 psi | 79% | 2982 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 49,748 psi | 78% | 2966 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 39,595 psi | 62% | 2861 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 36,782 psi | 58% | 2740 fps | 95.1% |
| Vihtavuori N150 | <<locked>> | 80% | 48,182 psi | 76% | 2904 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,135 psi | 69% | 2894 fps | 99.5% |
| Vihtavuori N165 | <<locked>> | 86% | 38,406 psi | 60% | 2772 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 43,772 psi | 69% | 2900 fps | 99.4% |
| Vihtavuori N555 | <<locked>> | 80% | 35,360 psi | 55% | 2762 fps | 98.6% |
| Vihtavuori N560 | 63.5 gr | 90% | 47,210 psi | 74% | 3064 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 96% | 47,253 psi | 74% | 3051 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,902 psi | 67% | 2851 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,150 psi | 71% | 2959 fps | 98.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 28,500 psi | 45% | 2687 fps | 98.5% |
| Winchester Supreme 780 | <<locked>> | 86% | 40,567 psi | 64% | 2828 fps | 95.3% |
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 82 powders for .270 Weath. Mag. loaded with the .277 | 130gr | Barnes X BT. Winchester StaBALL HD delivers the highest muzzle velocity at 3,304 fps; across all powders the maximum-charge window runs from 1,962 fps to 3,304 fps. ADI AR 2217 gives the best case fill at 100 %, and 82 of the 82 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 1:10.0 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. Alliant Reloder-26, Norma MRP, Vihtavuori N560 rank at the top here: for .270 Weath. Mag. with the .277 | 130gr | Barnes X BT 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.