Load Specifications
Load data in caliber .270 Weath. Mag. with .277 | 130gr | NorthFork Bonded Core bullet and 87 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 Alliant Reloder-26.
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 2700 | <<locked>> | 82% | 56,130 psi | 88% | 3068 fps | 99.2% |
| Accurate 3100 | <<locked>> | 98% | 55,593 psi | 87% | 3127 fps | 99.9% |
| Accurate 4064 | <<locked>> | 82% | 56,072 psi | 88% | 3051 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 57,392 psi | 90% | 3176 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 54,099 psi | 85% | 3215 fps | 96.6% |
| ADI AR 2208 | <<locked>> | 84% | 55,695 psi | 87% | 3087 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 54,476 psi | 85% | 3166 fps | 98.6% |
| ADI AR 2213 | <<locked>> | 98% | 55,825 psi | 87% | 3222 fps | 97.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 38,522 psi | 60% | 2913 fps | 96.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 56,623 psi | 89% | 3110 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 56,840 psi | 89% | 3136 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 54,389 psi | 85% | 3179 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 55,492 psi | 87% | 3196 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 57,522 psi | 90% | 3212 fps | 99% |
| Alliant Reloder-22 | <<locked>> | 98% | 55,216 psi | 87% | 3219 fps | 98.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 56,130 psi | 88% | 3196 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 48,544 psi | 76% | 3130 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 96% | 56,710 psi | 89% | 3294 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 54,099 psi | 85% | 3199 fps | 98.6% |
| Bofors RP3 | <<locked>> | 82% | 54,099 psi | 85% | 3074 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 44,512 psi | 70% | 3045 fps | 96% |
| Bofors RP5 | <<locked>> | 98% | 55,216 psi | 87% | 3219 fps | 98.9% |
| Bofors RP7 | <<locked>> | 88% | 56,855 psi | 89% | 3120 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 47,935 psi | 75% | 3061 fps | 97% |
| Hodgdon H380 | <<locked>> | 82% | 54,230 psi | 85% | 3091 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 55,579 psi | 87% | 3173 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 86% | 54,998 psi | 86% | 3127 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 96% | 56,057 psi | 88% | 3163 fps | 97.3% |
| Hodgdon H4831 SC | <<locked>> | 96% | 54,708 psi | 86% | 3140 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 54,708 psi | 86% | 3094 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 47,398 psi | 74% | 3173 fps | 98.3% |
| Hodgdon Superformance | <<locked>> | 88% | 55,999 psi | 88% | 3209 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,709 psi | 58% | 1969 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 54,955 psi | 86% | 3068 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 57,305 psi | 90% | 3104 fps | 99.7% |
| IMR 4350 | <<locked>> | 90% | 54,694 psi | 86% | 3100 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 86% | 54,839 psi | 86% | 3087 fps | 99.5% |
| IMR 4831 | <<locked>> | 90% | 54,056 psi | 85% | 3107 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 57,406 psi | 90% | 3146 fps | 97.6% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 57,261 psi | 90% | 3261 fps | 98.2% |
| Lovex S062 | <<locked>> | 82% | 55,492 psi | 87% | 3061 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 55,245 psi | 87% | 3087 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 56,681 psi | 89% | 3133 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 49,342 psi | 77% | 3022 fps | 99.5% |
| Norma 203B | <<locked>> | 82% | 56,130 psi | 88% | 3120 fps | 100% |
| Norma 204 | <<locked>> | 90% | 55,405 psi | 87% | 3156 fps | 98.6% |
| Norma MRP | <<locked>> | 96% | 55,071 psi | 86% | 3245 fps | 99.6% |
| Norma URP | <<locked>> | 90% | 55,709 psi | 87% | 3156 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 57,203 psi | 90% | 3150 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 53,780 psi | 84% | 3209 fps | 97.9% |
| Ramshot Hunter | <<locked>> | 90% | 54,607 psi | 86% | 3156 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 52,083 psi | 82% | 3143 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,333 psi | 59% | 2014 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 54,186 psi | 85% | 3077 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 54,984 psi | 86% | 3189 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 57,464 psi | 90% | 3199 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 55,550 psi | 87% | 3228 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 47,819 psi | 75% | 3173 fps | 99.3% |
| Rottweil R 902 | <<locked>> | 82% | 57,334 psi | 90% | 3071 fps | 100% |
| Rottweil R 903 | <<locked>> | 84% | 54,172 psi | 85% | 3068 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 55,927 psi | 88% | 3133 fps | 97.9% |
| Rottweil R 905 | <<locked>> | 96% | 56,913 psi | 89% | 3199 fps | 99% |
| Rottweil R 907 | <<locked>> | 88% | 56,855 psi | 89% | 3120 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 88% | 55,245 psi | 87% | 3087 fps | 99.9% |
| Shooters World Precision | <<locked>> | 82% | 55,492 psi | 87% | 3061 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 56,681 psi | 89% | 3133 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 55,956 psi | 88% | 3133 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 54,708 psi | 86% | 2943 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 54,897 psi | 86% | 3038 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 56,449 psi | 88% | 3196 fps | 99% |
| Somchem S355 | <<locked>> | 86% | 57,711 psi | 90% | 3120 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 54,172 psi | 85% | 3061 fps | 96.8% |
| Somchem S365 | <<locked>> | 92% | 55,564 psi | 87% | 3156 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 57,493 psi | 90% | 3169 fps | 99.5% |
| Vihtavuori N135 | <<locked>> | 82% | 57,696 psi | 90% | 3022 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 55,376 psi | 87% | 3038 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 54,143 psi | 85% | 3091 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 57,043 psi | 89% | 3143 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 82% | 56,072 psi | 88% | 3035 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 56,898 psi | 89% | 3153 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 54,795 psi | 86% | 3169 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 55,129 psi | 86% | 3235 fps | 97.4% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 50,676 psi | 79% | 3136 fps | 96.8% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 57,595 psi | 90% | 3107 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 55,811 psi | 87% | 3176 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 52,373 psi | 82% | 3274 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 57,711 psi | 90% | 3163 fps | 99% |
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% | 52,591 psi | 82% | 3009 fps | 98.8% |
| Accurate 3100 | <<locked>> | 82% | 32,184 psi | 50% | 2648 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 52,518 psi | 82% | 2999 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 40,640 psi | 64% | 2874 fps | 99.2% |
| Accurate MAGPRO | <<locked>> | 94% | 50,227 psi | 79% | 3146 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 80% | 49,124 psi | 77% | 2976 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 41,727 psi | 65% | 2910 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 92% | 45,701 psi | 72% | 3028 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 98% | 36,274 psi | 57% | 2851 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 49,937 psi | 78% | 3002 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 53,258 psi | 83% | 3077 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,233 psi | 61% | 2884 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 44,846 psi | 70% | 3015 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 41,510 psi | 65% | 2907 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 88% | 39,465 psi | 62% | 2904 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,921 psi | 45% | 2621 fps | 97.6% |
| Alliant Reloder-25 | <<locked>> | 86% | 30,806 psi | 48% | 2690 fps | 95.1% |
| Alliant Reloder-26 | 59.1 gr | 80% | 31,111 psi | 49% | 2743 fps | 96.3% |
| Bofors RP15 | <<locked>> | 92% | 41,669 psi | 65% | 2949 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 50,589 psi | 79% | 3015 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 41,524 psi | 65% | 2979 fps | 95% |
| Bofors RP5 | <<locked>> | 88% | 39,465 psi | 62% | 2904 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 44,164 psi | 69% | 2884 fps | 97.4% |
| Hodgdon H1000 | <<locked>> | 96% | 41,930 psi | 66% | 2933 fps | 95.1% |
| Hodgdon H380 | <<locked>> | 80% | 50,778 psi | 80% | 3031 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 42,598 psi | 67% | 2927 fps | 97.6% |
| Hodgdon H4350 | <<locked>> | 80% | 45,208 psi | 71% | 2943 fps | 97% |
| Hodgdon H4831 | <<locked>> | 92% | 48,892 psi | 77% | 3035 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 92% | 47,935 psi | 75% | 3015 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,767 psi | 58% | 2762 fps | 99.6% |
| Hodgdon Retumbo | <<locked>> | 94% | 39,015 psi | 61% | 2966 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 41,539 psi | 65% | 2936 fps | 97.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,340 psi | 43% | 1759 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,692 psi | 81% | 3012 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 53,998 psi | 85% | 3048 fps | 99.4% |
| IMR 4350 | <<locked>> | 80% | 39,711 psi | 62% | 2805 fps | 96.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,629 psi | 72% | 2917 fps | 98.2% |
| IMR 4831 | <<locked>> | 80% | 39,001 psi | 61% | 2822 fps | 99% |
| IMR 4955 Enduron | <<locked>> | 90% | 47,514 psi | 74% | 2969 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 94% | 46,572 psi | 73% | 3061 fps | 95.8% |
| Lovex S062 | <<locked>> | 80% | 51,982 psi | 81% | 3005 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 43,062 psi | 67% | 2861 fps | 98.7% |
| Lovex S070 | <<locked>> | 80% | 41,350 psi | 65% | 2844 fps | 97.5% |
| Lovex S071 | <<locked>> | 88% | 33,504 psi | 53% | 2684 fps | 95.8% |
| Norma 203B | <<locked>> | 80% | 52,620 psi | 82% | 3064 fps | 100% |
| Norma 204 | <<locked>> | 82% | 42,105 psi | 66% | 2900 fps | 95.7% |
| Norma MRP | 60.3 gr | 84% | 36,042 psi | 56% | 2848 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 40,147 psi | 63% | 2864 fps | 99% |
| Ramshot Big Game | <<locked>> | 80% | 53,359 psi | 84% | 3087 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 43,482 psi | 68% | 3002 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 39,015 psi | 61% | 2851 fps | 97.5% |
| Ramshot Magnum | <<locked>> | 92% | 38,725 psi | 61% | 2867 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,949 psi | 44% | 1804 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 50,589 psi | 79% | 3015 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 47,587 psi | 75% | 3068 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 40,567 psi | 64% | 2894 fps | 99% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,030 psi | 61% | 2900 fps | 98.6% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 35,969 psi | 56% | 2877 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 80% | 53,722 psi | 84% | 3018 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 47,630 psi | 75% | 2959 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 46,282 psi | 73% | 2956 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 86% | 40,785 psi | 64% | 2890 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 44,164 psi | 69% | 2884 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,062 psi | 67% | 2861 fps | 98.7% |
| Shooters World Precision | <<locked>> | 80% | 51,982 psi | 81% | 3005 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 41,350 psi | 65% | 2844 fps | 97.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 48,834 psi | 77% | 3018 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,341 psi | 76% | 2848 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,163 psi | 66% | 2802 fps | 97.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 40,408 psi | 63% | 2884 fps | 95.5% |
| Somchem S355 | <<locked>> | 80% | 47,703 psi | 75% | 2956 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 47,456 psi | 74% | 2943 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 36,738 psi | 58% | 2818 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 36,289 psi | 57% | 2753 fps | 95% |
| Vihtavuori N135 | <<locked>> | 80% | 54,201 psi | 85% | 2972 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 45,600 psi | 71% | 2877 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,568 psi | 65% | 2861 fps | 99.2% |
| Vihtavuori N165 | <<locked>> | 88% | 38,189 psi | 60% | 2785 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 52,605 psi | 82% | 2982 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 41,046 psi | 64% | 2864 fps | 99% |
| Vihtavuori N555 | <<locked>> | 80% | 32,169 psi | 50% | 2703 fps | 97.6% |
| Vihtavuori N560 | 66 gr | 92% | 47,892 psi | 75% | 3100 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 96% | 44,193 psi | 69% | 3005 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,669 psi | 64% | 2825 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 42,598 psi | 67% | 2927 fps | 97.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,628 psi | 40% | 2595 fps | 96.8% |
| Winchester Supreme 780 | <<locked>> | 88% | 40,756 psi | 64% | 2851 fps | 95.5% |
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 87 powders for .270 Weath. Mag. loaded with the .277 | 130gr | NorthFork Bonded Core. Alliant Reloder-26 delivers the highest muzzle velocity at 3,294 fps; across all powders the maximum-charge window runs from 1,969 fps to 3,294 fps. ADI AR 2225 gives the best case fill at 100 %, and 87 of the 87 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 1:11.0 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, Alliant Reloder-26 rank at the top here: for .270 Weath. Mag. with the .277 | 130gr | NorthFork Bonded Core 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.