Load Specifications
Load data in caliber .270 Win. with .277 | 140gr | Barnes X BT bullet and 91 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-17 and ReloadSwiss RS 60.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 82% | 54,317 psi | 87% | 2723 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 54,302 psi | 87% | 2762 fps | 97.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 51,416 psi | 82% | 2805 fps | 98.7% |
| Accurate 4064 | <<locked>> | 84% | 54,418 psi | 87% | 2772 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 53,635 psi | 86% | 2858 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 82% | 55,724 psi | 89% | 2835 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 56,362 psi | 90% | 2831 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 53,969 psi | 87% | 2881 fps | 96.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 55,521 psi | 89% | 2956 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 54,114 psi | 87% | 2812 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 54,447 psi | 87% | 2835 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 53,766 psi | 86% | 2907 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 54,723 psi | 88% | 2933 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 53,272 psi | 85% | 2871 fps | 96.9% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 50,560 psi | 81% | 2871 fps | 96.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 47,790 psi | 77% | 2822 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,192 psi | 68% | 2733 fps | 97.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 54,027 psi | 87% | 3002 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 55,317 psi | 89% | 2848 fps | 99.9% |
| Bofors RP3 | <<locked>> | 86% | 55,259 psi | 89% | 2831 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 50,560 psi | 81% | 2871 fps | 96.4% |
| Bofors RP7 | <<locked>> | 90% | 54,302 psi | 87% | 2802 fps | 97.9% |
| Hodgdon H380 | <<locked>> | 86% | 55,448 psi | 89% | 2844 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 92% | 55,172 psi | 88% | 2897 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 90% | 55,347 psi | 89% | 2858 fps | 97.5% |
| Hodgdon H4895 | <<locked>> | 82% | 56,376 psi | 90% | 2844 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 54,012 psi | 87% | 2835 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 56,057 psi | 90% | 2877 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 55,100 psi | 88% | 2930 fps | 98.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,550 psi | 59% | 1752 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 53,824 psi | 86% | 2792 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 56,173 psi | 90% | 2818 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 55,376 psi | 89% | 2795 fps | 98.5% |
| IMR 4350 | <<locked>> | 94% | 54,607 psi | 88% | 2828 fps | 98% |
| IMR 4451 Enduron | <<locked>> | 90% | 55,767 psi | 89% | 2831 fps | 98.5% |
| IMR 4831 | <<locked>> | 94% | 53,896 psi | 86% | 2848 fps | 99.9% |
| IMR 4895 | <<locked>> | 84% | 55,825 psi | 90% | 2861 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 56,260 psi | 90% | 2812 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 54,563 psi | 87% | 2756 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 53,345 psi | 86% | 2769 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 55,927 psi | 90% | 2828 fps | 99.4% |
| Lovex S070 | <<locked>> | 92% | 53,954 psi | 87% | 2818 fps | 98.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,192 psi | 69% | 2661 fps | 97.2% |
| Norma 201 | <<locked>> | 82% | 54,897 psi | 88% | 2782 fps | 100% |
| Norma 202 | <<locked>> | 82% | 55,361 psi | 89% | 2779 fps | 100% |
| Norma 203B | <<locked>> | 84% | 53,809 psi | 86% | 2822 fps | 100% |
| Norma 204 | <<locked>> | 94% | 55,259 psi | 89% | 2881 fps | 97% |
| Norma MRPᴾ | <<locked>> | 100% | 53,171 psi | 85% | 2953 fps | 98.3% |
| Norma URP | <<locked>> | 94% | 55,564 psi | 89% | 2894 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 84% | 54,041 psi | 87% | 2841 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 54,085 psi | 87% | 2887 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,115 psi | 60% | 1791 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 55,071 psi | 88% | 2818 fps | 98.9% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 54,795 psi | 88% | 2894 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 54,375 psi | 87% | 2930 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 56,275 psi | 90% | 2927 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 54,824 psi | 88% | 2949 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 84% | 55,448 psi | 89% | 2782 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 55,085 psi | 88% | 2825 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 55,695 psi | 89% | 2851 fps | 96% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 56,028 psi | 90% | 2913 fps | 97.5% |
| Rottweil R 907 | <<locked>> | 90% | 54,302 psi | 87% | 2802 fps | 97.9% |
| Shooters World Long Rifle | <<locked>> | 92% | 55,927 psi | 90% | 2828 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 82% | 56,260 psi | 90% | 2812 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 53,345 psi | 86% | 2769 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 53,954 psi | 87% | 2818 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 55,956 psi | 90% | 2877 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 53,896 psi | 86% | 2802 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 55,550 psi | 89% | 2710 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 56,101 psi | 90% | 2713 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 55,767 psi | 89% | 2779 fps | 98.6% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 55,506 psi | 89% | 2910 fps | 97.4% |
| Somchem S335 | <<locked>> | 82% | 55,259 psi | 89% | 2710 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 56,376 psi | 90% | 2822 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 55,085 psi | 88% | 2818 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 54,085 psi | 87% | 2894 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 53,505 psi | 86% | 2841 fps | 97.8% |
| Vihtavuori N133 | <<locked>> | 82% | 55,854 psi | 90% | 2697 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 55,535 psi | 89% | 2743 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 55,651 psi | 89% | 2756 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 56,159 psi | 90% | 2795 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 54,070 psi | 87% | 2831 fps | 99.8% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,197 psi | 79% | 2756 fps | 96.5% |
| Vihtavuori N540 | <<locked>> | 84% | 53,983 psi | 87% | 2756 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 53,476 psi | 86% | 2841 fps | 99.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 53,490 psi | 86% | 2897 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 53,476 psi | 86% | 2802 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 55,506 psi | 89% | 2904 fps | 98.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,308 psi | 69% | 2864 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 54,041 psi | 87% | 2812 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 53,113 psi | 85% | 2825 fps | 96.6% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 51,285 psi | 82% | 2680 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,877 psi | 77% | 2654 fps | 96.4% |
| Accurate 3100 | <<locked>> | 90% | 37,347 psi | 60% | 2539 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 48,486 psi | 78% | 2684 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,593 psi | 59% | 2539 fps | 97.1% |
| ADI AR 2206H | <<locked>> | 80% | 52,460 psi | 84% | 2782 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 44,657 psi | 72% | 2635 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 94% | 47,645 psi | 76% | 2766 fps | 95.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,370 psi | 78% | 2835 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,281 psi | 73% | 2667 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,225 psi | 77% | 2730 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 35,491 psi | 57% | 2536 fps | 97% |
| Alliant Reloder-17 | 45.5 gr | 80% | 39,537 psi | 63% | 2657 fps | 99.3% |
| Alliant Reloder-19 | <<locked>> | 94% | 47,166 psi | 76% | 2762 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 98% | 47,500 psi | 76% | 2815 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 82% | 28,297 psi | 45% | 2362 fps | 95.4% |
| Alliant Reloder-25 | <<locked>> | 94% | 35,360 psi | 57% | 2566 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 86% | 34,113 psi | 55% | 2582 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 51,808 psi | 83% | 2792 fps | 99.7% |
| Bofors RP3 | <<locked>> | 80% | 45,890 psi | 74% | 2684 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 47,500 psi | 76% | 2815 fps | 95.7% |
| Bofors RP7 | <<locked>> | 82% | 43,076 psi | 69% | 2598 fps | 95.4% |
| Hodgdon H380 | <<locked>> | 80% | 46,108 psi | 74% | 2687 fps | 98.7% |
| Hodgdon H414 | <<locked>> | 82% | 40,509 psi | 65% | 2628 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 84% | 46,151 psi | 74% | 2697 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 53,026 psi | 85% | 2792 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,214 psi | 53% | 2441 fps | 97.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,240 psi | 79% | 2772 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 42,119 psi | 68% | 2690 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,340 psi | 44% | 1565 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,662 psi | 81% | 2743 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,891 psi | 75% | 2667 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,081 psi | 79% | 2690 fps | 97.5% |
| IMR 4350 | <<locked>> | 86% | 43,105 psi | 69% | 2625 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,597 psi | 67% | 2572 fps | 95.5% |
| IMR 4831 | <<locked>> | 80% | 35,041 psi | 56% | 2490 fps | 96.7% |
| IMR 4895 | <<locked>> | 80% | 49,371 psi | 79% | 2756 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 52,866 psi | 85% | 2762 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 51,416 psi | 82% | 2707 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 47,500 psi | 76% | 2674 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,711 psi | 64% | 2533 fps | 96.6% |
| Lovex S070 | <<locked>> | 82% | 40,219 psi | 64% | 2562 fps | 95.5% |
| Lovex S071 | <<locked>> | 94% | 36,100 psi | 58% | 2513 fps | 95% |
| Norma 201 | <<locked>> | 80% | 51,982 psi | 83% | 2736 fps | 100% |
| Norma 202 | <<locked>> | 80% | 52,011 psi | 83% | 2730 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,616 psi | 76% | 2717 fps | 99.8% |
| Norma 204 | <<locked>> | 90% | 48,501 psi | 78% | 2766 fps | 95.5% |
| Norma MRP | <<locked>> | 92% | 41,234 psi | 66% | 2720 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 36,042 psi | 58% | 2526 fps | 96.8% |
| Ramshot Big Game | <<locked>> | 80% | 47,268 psi | 76% | 2733 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 82% | 37,115 psi | 60% | 2559 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,920 psi | 45% | 1604 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,977 psi | 74% | 2664 fps | 97.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 51,343 psi | 82% | 2841 fps | 99.9% |
| ReloadSwiss RS 60 | 45.5 gr | 80% | 41,829 psi | 67% | 2713 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,853 psi | 57% | 2549 fps | 96.5% |
| ReloadSwiss RS 70 | 46.2 gr | 80% | 34,969 psi | 56% | 2543 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 80% | 49,647 psi | 80% | 2690 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,207 psi | 69% | 2628 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 96% | 52,605 psi | 84% | 2802 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 94% | 46,195 psi | 74% | 2746 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 82% | 43,076 psi | 69% | 2598 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,711 psi | 64% | 2533 fps | 96.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 52,866 psi | 85% | 2762 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 47,500 psi | 76% | 2674 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 40,219 psi | 64% | 2562 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,584 psi | 70% | 2671 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,749 psi | 81% | 2753 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,504 psi | 84% | 2667 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,454 psi | 71% | 2543 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 41,292 psi | 66% | 2526 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 45,759 psi | 73% | 2743 fps | 95.2% |
| Somchem S335 | <<locked>> | 80% | 52,359 psi | 84% | 2671 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 52,808 psi | 85% | 2769 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,642 psi | 70% | 2628 fps | 99.7% |
| Somchem S365 | <<locked>> | 80% | 32,822 psi | 53% | 2490 fps | 98.9% |
| Somchem S385 | <<locked>> | 90% | 41,916 psi | 67% | 2631 fps | 95% |
| Vihtavuori N133 | <<locked>> | 80% | 52,779 psi | 85% | 2654 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 49,487 psi | 79% | 2657 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,226 psi | 79% | 2664 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,350 psi | 66% | 2556 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 37,362 psi | 60% | 2523 fps | 97.1% |
| Vihtavuori N165 | <<locked>> | 96% | 43,424 psi | 70% | 2651 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 47,950 psi | 77% | 2664 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,130 psi | 60% | 2530 fps | 96.8% |
| Vihtavuori N555 | <<locked>> | 82% | 30,806 psi | 49% | 2441 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,535 psi | 59% | 2493 fps | 98.8% |
| Winchester 760 | <<locked>> | 82% | 40,509 psi | 65% | 2628 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 84% | 26,934 psi | 43% | 2388 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,836 psi | 82% | 2762 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 46,717 psi | 75% | 2717 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 91 powders for .270 Win. loaded with the .277 | 140gr | Barnes X BT. Alliant Reloder-26 delivers the highest muzzle velocity at 3,002 fps; across all powders the maximum-charge window runs from 1,752 fps to 3,002 fps. Accurate 3100 gives the best case fill at 100 %, and 91 of the 91 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 140.0 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. ReloadSwiss RS 70, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for .270 Win. with the .277 | 140gr | Barnes X BT 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.