Load Specifications
Load data in caliber .270 Weath. Mag. with .277 | 130gr | Brenneke TAG bullet and 88 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Vihtavuori N560 and ReloadSwiss RS 70.
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 2700 | <<locked>> | 82% | 55,912 psi | 88% | 3064 fps | 99.2% |
| Accurate 3100 | <<locked>> | 98% | 55,143 psi | 86% | 3120 fps | 99.9% |
| Accurate 4064 | <<locked>> | 82% | 55,811 psi | 87% | 3051 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 56,884 psi | 89% | 3169 fps | 100% |
| Accurate MAGPRO | <<locked>> | 98% | 57,464 psi | 90% | 3278 fps | 97.3% |
| ADI AR 2208 | <<locked>> | 84% | 55,477 psi | 87% | 3084 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 54,056 psi | 85% | 3159 fps | 98.5% |
| ADI AR 2213 | <<locked>> | 98% | 55,390 psi | 87% | 3215 fps | 97.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 38,406 psi | 60% | 2910 fps | 96.7% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 54,360 psi | 85% | 3156 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 56,376 psi | 88% | 3107 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 56,550 psi | 89% | 3130 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 57,682 psi | 90% | 3228 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 55,274 psi | 87% | 3196 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 57,334 psi | 90% | 3209 fps | 99% |
| Alliant Reloder-22 | <<locked>> | 98% | 54,824 psi | 86% | 3212 fps | 98.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 55,666 psi | 87% | 3189 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 48,138 psi | 75% | 3123 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 96% | 56,217 psi | 88% | 3287 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 53,722 psi | 84% | 3189 fps | 98.6% |
| Bofors RP3 | <<locked>> | 84% | 57,551 psi | 90% | 3127 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 54,824 psi | 86% | 3212 fps | 98.8% |
| Bofors RP7 | <<locked>> | 88% | 56,637 psi | 89% | 3117 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 47,776 psi | 75% | 3061 fps | 96.9% |
| Hodgdon H380 | <<locked>> | 84% | 57,667 psi | 90% | 3146 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 55,347 psi | 87% | 3169 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 86% | 54,795 psi | 86% | 3123 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 96% | 55,637 psi | 87% | 3153 fps | 97.1% |
| Hodgdon H4831 SC | <<locked>> | 96% | 54,549 psi | 85% | 3136 fps | 96.9% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 54,476 psi | 85% | 3091 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 47,268 psi | 74% | 3173 fps | 98.3% |
| Hodgdon Superformance | <<locked>> | 88% | 55,521 psi | 87% | 3202 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,550 psi | 57% | 1965 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 54,679 psi | 86% | 3061 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 57,087 psi | 89% | 3100 fps | 99.7% |
| IMR 4350 | <<locked>> | 90% | 54,302 psi | 85% | 3094 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 86% | 54,607 psi | 86% | 3087 fps | 99.4% |
| IMR 4831 | <<locked>> | 92% | 57,276 psi | 90% | 3156 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 56,971 psi | 89% | 3140 fps | 97.6% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 56,826 psi | 89% | 3255 fps | 98.1% |
| Lovex S062 | <<locked>> | 82% | 55,245 psi | 87% | 3058 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 55,056 psi | 86% | 3084 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 56,478 psi | 89% | 3130 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 49,168 psi | 77% | 3022 fps | 99.5% |
| Norma 203B | <<locked>> | 82% | 55,898 psi | 88% | 3117 fps | 100% |
| Norma 204 | <<locked>> | 90% | 55,201 psi | 87% | 3153 fps | 98.5% |
| Norma MRP | <<locked>> | 96% | 54,607 psi | 86% | 3238 fps | 99.6% |
| Norma URP | <<locked>> | 90% | 55,492 psi | 87% | 3153 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 56,739 psi | 89% | 3140 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 57,653 psi | 90% | 3278 fps | 98.6% |
| Ramshot Hunter | <<locked>> | 90% | 54,389 psi | 85% | 3153 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 51,706 psi | 81% | 3136 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,376 psi | 59% | 2014 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 57,551 psi | 90% | 3130 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 54,737 psi | 86% | 3186 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 57,014 psi | 89% | 3192 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 55,347 psi | 87% | 3225 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 47,514 psi | 74% | 3166 fps | 99.2% |
| Rottweil R 902 | <<locked>> | 82% | 57,087 psi | 89% | 3068 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 57,667 psi | 90% | 3123 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 55,724 psi | 87% | 3130 fps | 97.8% |
| Rottweil R 905 | <<locked>> | 96% | 56,724 psi | 89% | 3196 fps | 99% |
| Rottweil R 907 | <<locked>> | 88% | 56,637 psi | 89% | 3117 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 88% | 55,056 psi | 86% | 3084 fps | 99.9% |
| Shooters World Precision | <<locked>> | 82% | 55,245 psi | 87% | 3058 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 56,478 psi | 89% | 3130 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 55,434 psi | 87% | 3127 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 54,476 psi | 85% | 2940 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 54,462 psi | 85% | 3031 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 56,246 psi | 88% | 3189 fps | 98.9% |
| Somchem S355 | <<locked>> | 86% | 57,203 psi | 90% | 3114 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 57,609 psi | 90% | 3120 fps | 97.5% |
| Somchem S365 | <<locked>> | 92% | 55,303 psi | 87% | 3156 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 57,334 psi | 90% | 3166 fps | 99.5% |
| Vihtavuori N135 | <<locked>> | 82% | 57,406 psi | 90% | 3018 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 57,740 psi | 90% | 3038 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 55,158 psi | 86% | 3035 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 57,348 psi | 90% | 3143 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 56,681 psi | 89% | 3140 fps | 99.2% |
| Vihtavuori N540 | <<locked>> | 82% | 55,825 psi | 87% | 3031 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 56,681 psi | 89% | 3150 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 54,578 psi | 86% | 3166 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 54,679 psi | 86% | 3228 fps | 97.3% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 50,270 psi | 79% | 3130 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 57,174 psi | 90% | 3100 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 55,347 psi | 87% | 3169 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 51,822 psi | 81% | 3268 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 57,334 psi | 90% | 3159 fps | 98.9% |
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 2700 | <<locked>> | 80% | 52,417 psi | 82% | 3005 fps | 98.8% |
| Accurate 3100 | <<locked>> | 82% | 31,981 psi | 50% | 2644 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 52,243 psi | 82% | 2995 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 40,350 psi | 63% | 2867 fps | 99.2% |
| Accurate MAGPRO | <<locked>> | 94% | 49,835 psi | 78% | 3136 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 48,892 psi | 77% | 2972 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 41,568 psi | 65% | 2910 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 92% | 45,339 psi | 71% | 3018 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 98% | 35,984 psi | 56% | 2844 fps | 95.6% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 41,742 psi | 65% | 2910 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 49,676 psi | 78% | 2999 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 52,982 psi | 83% | 3074 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,001 psi | 61% | 2877 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 44,628 psi | 70% | 3012 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 41,307 psi | 65% | 2904 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 88% | 39,073 psi | 61% | 2894 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,732 psi | 45% | 2615 fps | 97.5% |
| Alliant Reloder-25 | <<locked>> | 86% | 30,661 psi | 48% | 2687 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 80% | 30,908 psi | 48% | 2736 fps | 96.1% |
| Bofors RP15 | <<locked>> | 92% | 41,263 psi | 65% | 2943 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 50,299 psi | 79% | 3012 fps | 100% |
| Bofors RP5 | <<locked>> | 88% | 39,073 psi | 61% | 2894 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 43,961 psi | 69% | 2881 fps | 97.4% |
| Hodgdon H1000 | <<locked>> | 98% | 44,585 psi | 70% | 2992 fps | 96% |
| Hodgdon H380 | <<locked>> | 80% | 50,560 psi | 79% | 3028 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 42,148 psi | 66% | 2917 fps | 97.5% |
| Hodgdon H4350 | <<locked>> | 80% | 45,005 psi | 71% | 2940 fps | 97% |
| Hodgdon H4831 | <<locked>> | 92% | 48,472 psi | 76% | 3025 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 92% | 47,529 psi | 74% | 3009 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,521 psi | 57% | 2759 fps | 99.5% |
| Hodgdon Retumbo | <<locked>> | 94% | 38,667 psi | 61% | 2959 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 41,350 psi | 65% | 2933 fps | 97% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,311 psi | 43% | 1759 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,445 psi | 81% | 3009 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 53,519 psi | 84% | 3041 fps | 99.3% |
| IMR 4350 | <<locked>> | 80% | 39,508 psi | 62% | 2802 fps | 96.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,426 psi | 71% | 2913 fps | 98.1% |
| IMR 4831 | <<locked>> | 80% | 38,783 psi | 61% | 2818 fps | 98.9% |
| IMR 4955 Enduron | <<locked>> | 90% | 47,152 psi | 74% | 2963 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 94% | 46,427 psi | 73% | 3058 fps | 95.8% |
| Lovex S062 | <<locked>> | 80% | 51,721 psi | 81% | 3002 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 42,844 psi | 67% | 2858 fps | 98.7% |
| Lovex S070 | <<locked>> | 80% | 41,133 psi | 64% | 2838 fps | 97.4% |
| Lovex S071 | <<locked>> | 88% | 33,315 psi | 52% | 2680 fps | 95.8% |
| Norma 203B | <<locked>> | 80% | 52,315 psi | 82% | 3061 fps | 100% |
| Norma 204 | <<locked>> | 82% | 41,945 psi | 66% | 2894 fps | 95.6% |
| Norma MRP | 59.9 gr | 84% | 35,679 psi | 56% | 2841 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 39,900 psi | 63% | 2861 fps | 99% |
| Ramshot Big Game | <<locked>> | 80% | 53,127 psi | 83% | 3084 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 43,120 psi | 68% | 2995 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 38,798 psi | 61% | 2844 fps | 97.4% |
| Ramshot Magnum | <<locked>> | 92% | 38,421 psi | 60% | 2861 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,934 psi | 44% | 1801 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 50,372 psi | 79% | 3009 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 47,355 psi | 74% | 3064 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 40,176 psi | 63% | 2887 fps | 98.9% |
| ReloadSwiss RS 70 | 58.3 gr | 80% | 38,827 psi | 61% | 2897 fps | 98.5% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 35,679 psi | 56% | 2867 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 80% | 53,461 psi | 84% | 3015 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 47,326 psi | 74% | 2956 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 45,890 psi | 72% | 2946 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 86% | 40,553 psi | 64% | 2884 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 43,961 psi | 69% | 2881 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,844 psi | 67% | 2858 fps | 98.7% |
| Shooters World Precision | <<locked>> | 80% | 51,721 psi | 81% | 3002 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 41,133 psi | 64% | 2838 fps | 97.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 48,617 psi | 76% | 3015 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,080 psi | 75% | 2844 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,901 psi | 66% | 2799 fps | 97.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 40,190 psi | 63% | 2881 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 47,456 psi | 74% | 2953 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 47,079 psi | 74% | 2936 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 36,492 psi | 57% | 2815 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 38,580 psi | 60% | 2808 fps | 95.9% |
| Vihtavuori N135 | <<locked>> | 80% | 53,940 psi | 85% | 2969 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 54,056 psi | 85% | 2986 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 45,382 psi | 71% | 2874 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,350 psi | 65% | 2858 fps | 99.2% |
| Vihtavuori N165 | <<locked>> | 88% | 38,029 psi | 60% | 2785 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 52,402 psi | 82% | 2982 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 40,814 psi | 64% | 2858 fps | 99% |
| Vihtavuori N555 | <<locked>> | 80% | 31,937 psi | 50% | 2697 fps | 97.6% |
| Vihtavuori N560 | 65.7 gr | 92% | 47,718 psi | 75% | 3097 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 98% | 46,920 psi | 74% | 3064 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,495 psi | 63% | 2822 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 42,337 psi | 66% | 2920 fps | 97.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,483 psi | 40% | 2592 fps | 96.7% |
| Winchester Supreme 780 | <<locked>> | 88% | 40,582 psi | 64% | 2848 fps | 95.4% |
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 88 powders for .270 Weath. Mag. loaded with the .277 | 130gr | Brenneke TAG. Alliant Reloder-26 delivers the highest muzzle velocity at 3,287 fps; across all powders the maximum-charge window runs from 1,965 fps to 3,287 fps. ADI AR 2225 gives the best case fill at 100 %, and 88 of the 88 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. ADI AR 2225, Alliant Reloder-23, 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. Norma MRP, Vihtavuori N560, ReloadSwiss RS 70 rank at the top here: for .270 Weath. Mag. with the .277 | 130gr | Brenneke TAG 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.