Load Specifications
Load data in caliber .270 Win. with .277 | 140gr | Winchester Silvertip bullet and 92 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-16 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.
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>> | 84% | 56,362 psi | 90% | 2789 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 53,983 psi | 87% | 2799 fps | 98.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 51,126 psi | 82% | 2835 fps | 99% |
| Accurate 4064 | <<locked>> | 84% | 53,171 psi | 85% | 2795 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 53,563 psi | 86% | 2894 fps | 99.9% |
| Accurate High Countryᴾ | <<locked>> | 100% | 55,811 psi | 89% | 3031 fps | 97% |
| ADI AR 2206H | <<locked>> | 82% | 55,753 psi | 89% | 2871 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 53,359 psi | 86% | 2822 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 54,491 psi | 87% | 2927 fps | 97.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 55,999 psi | 90% | 2999 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 54,418 psi | 87% | 2923 fps | 97.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 54,099 psi | 87% | 2848 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 54,215 psi | 87% | 2867 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 54,215 psi | 87% | 2946 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 55,288 psi | 89% | 2972 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 53,679 psi | 86% | 2917 fps | 97.4% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 50,749 psi | 81% | 2910 fps | 97% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 47,834 psi | 77% | 2851 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,989 psi | 67% | 2766 fps | 98.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 54,897 psi | 88% | 3048 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 55,637 psi | 89% | 2887 fps | 100% |
| Bofors RP3 | <<locked>> | 86% | 54,665 psi | 88% | 2861 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 50,749 psi | 81% | 2910 fps | 97% |
| Bofors RP7 | <<locked>> | 90% | 54,201 psi | 87% | 2841 fps | 98.3% |
| Hodgdon H380 | <<locked>> | 86% | 55,376 psi | 89% | 2881 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 92% | 55,608 psi | 89% | 2940 fps | 99% |
| Hodgdon H4350 | <<locked>> | 90% | 55,796 psi | 89% | 2904 fps | 98% |
| Hodgdon H4895 | <<locked>> | 82% | 56,347 psi | 90% | 2881 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 54,563 psi | 87% | 2874 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 52,852 psi | 85% | 2861 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 55,840 psi | 90% | 2976 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,230 psi | 58% | 1781 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 53,780 psi | 86% | 2828 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 56,202 psi | 90% | 2858 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 55,550 psi | 89% | 2838 fps | 98.9% |
| IMR 4350 | <<locked>> | 94% | 54,998 psi | 88% | 2874 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 90% | 56,028 psi | 90% | 2871 fps | 98.9% |
| IMR 4831 | <<locked>> | 94% | 54,027 psi | 87% | 2884 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 55,579 psi | 89% | 2894 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 55,970 psi | 90% | 2841 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 54,607 psi | 88% | 2795 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 56,333 psi | 90% | 2848 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 55,927 psi | 90% | 2867 fps | 99.6% |
| Lovex S070 | <<locked>> | 92% | 53,809 psi | 86% | 2854 fps | 98.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,322 psi | 68% | 2680 fps | 97.4% |
| Norma 201 | <<locked>> | 82% | 54,259 psi | 87% | 2808 fps | 100% |
| Norma 202 | <<locked>> | 82% | 55,071 psi | 88% | 2812 fps | 100% |
| Norma 203B | <<locked>> | 84% | 53,505 psi | 86% | 2854 fps | 100% |
| Norma 204 | <<locked>> | 94% | 55,869 psi | 90% | 2927 fps | 97.6% |
| Norma MRPᴾ | <<locked>> | 100% | 53,882 psi | 86% | 2999 fps | 98.8% |
| Norma URP | <<locked>> | 94% | 55,695 psi | 89% | 2930 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 54,201 psi | 87% | 2877 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 54,592 psi | 88% | 2930 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,912 psi | 59% | 1824 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 55,288 psi | 89% | 2861 fps | 99.2% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 55,013 psi | 88% | 2933 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 54,940 psi | 88% | 2966 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 53,156 psi | 85% | 2913 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 55,709 psi | 89% | 2999 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 84% | 55,114 psi | 88% | 2815 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 54,839 psi | 88% | 2858 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 56,246 psi | 90% | 2897 fps | 96.7% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 56,391 psi | 90% | 2956 fps | 98% |
| Rottweil R 907 | <<locked>> | 90% | 54,201 psi | 87% | 2841 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 92% | 55,927 psi | 90% | 2867 fps | 99.6% |
| Shooters World Match Rifle | <<locked>> | 82% | 55,970 psi | 90% | 2841 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 56,333 psi | 90% | 2848 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 53,809 psi | 86% | 2854 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 56,391 psi | 90% | 2917 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 54,027 psi | 87% | 2838 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 55,332 psi | 89% | 2746 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 56,159 psi | 90% | 2749 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 55,840 psi | 90% | 2822 fps | 98.9% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 55,883 psi | 90% | 2949 fps | 97.9% |
| Somchem S335 | <<locked>> | 82% | 54,882 psi | 88% | 2743 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 54,737 psi | 88% | 2851 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 54,911 psi | 88% | 2933 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 53,476 psi | 86% | 2874 fps | 98.2% |
| Vihtavuori N133 | <<locked>> | 82% | 55,811 psi | 89% | 2730 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 55,303 psi | 89% | 2776 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 55,593 psi | 89% | 2789 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 56,057 psi | 90% | 2828 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 54,578 psi | 88% | 2874 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,400 psi | 79% | 2795 fps | 97.1% |
| Vihtavuori N540 | <<locked>> | 84% | 53,853 psi | 86% | 2785 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 53,505 psi | 86% | 2874 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 53,490 psi | 86% | 2930 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 54,070 psi | 87% | 2841 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 55,912 psi | 90% | 2946 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,294 psi | 69% | 2904 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 54,027 psi | 87% | 2848 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 53,693 psi | 86% | 2871 fps | 97.3% |
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% | 49,429 psi | 79% | 2694 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,413 psi | 76% | 2687 fps | 96.8% |
| Accurate 3100 | <<locked>> | 90% | 36,303 psi | 58% | 2552 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 46,818 psi | 75% | 2697 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,302 psi | 57% | 2546 fps | 97% |
| Accurate High Country | <<locked>> | 96% | 48,515 psi | 78% | 2904 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 52,214 psi | 84% | 2815 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 44,251 psi | 71% | 2664 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 92% | 44,947 psi | 72% | 2753 fps | 95.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,573 psi | 78% | 2874 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 44,991 psi | 72% | 2756 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,846 psi | 72% | 2694 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,761 psi | 77% | 2759 fps | 99.8% |
| Alliant Reloder-16 | 45.1 gr | 80% | 34,751 psi | 56% | 2556 fps | 97.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,218 psi | 63% | 2684 fps | 99.5% |
| Alliant Reloder-19 | <<locked>> | 92% | 44,440 psi | 71% | 2746 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 96% | 44,556 psi | 71% | 2792 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 82% | 27,006 psi | 43% | 2359 fps | 95.2% |
| Alliant Reloder-25 | <<locked>> | 94% | 34,679 psi | 56% | 2589 fps | 95.3% |
| Alliant Reloder-26 | 53.5 gr | 86% | 33,083 psi | 53% | 2592 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 51,866 psi | 83% | 2828 fps | 99.9% |
| Bofors RP3 | <<locked>> | 80% | 44,831 psi | 72% | 2700 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 44,556 psi | 71% | 2792 fps | 95.4% |
| Bofors RP7 | <<locked>> | 82% | 42,337 psi | 68% | 2625 fps | 95.7% |
| Hodgdon H380 | <<locked>> | 80% | 45,310 psi | 73% | 2710 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 82% | 39,943 psi | 64% | 2651 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 82% | 43,134 psi | 69% | 2674 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 52,779 psi | 85% | 2825 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,227 psi | 52% | 2454 fps | 97.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,429 psi | 79% | 2808 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 41,901 psi | 67% | 2723 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,050 psi | 43% | 1591 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,618 psi | 81% | 2776 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,543 psi | 75% | 2700 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,066 psi | 79% | 2730 fps | 97.9% |
| IMR 4350 | <<locked>> | 84% | 40,335 psi | 65% | 2602 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,220 psi | 66% | 2602 fps | 95.9% |
| IMR 4831 | <<locked>> | 80% | 34,069 psi | 55% | 2500 fps | 96.7% |
| IMR 4895 | <<locked>> | 80% | 48,965 psi | 79% | 2785 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 52,344 psi | 84% | 2792 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 51,227 psi | 82% | 2743 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 46,717 psi | 75% | 2700 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,682 psi | 62% | 2552 fps | 96.7% |
| Lovex S070 | <<locked>> | 82% | 39,189 psi | 63% | 2582 fps | 95.6% |
| Lovex S071 | <<locked>> | 94% | 35,041 psi | 56% | 2523 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 51,097 psi | 82% | 2762 fps | 100% |
| Norma 202 | <<locked>> | 80% | 51,822 psi | 83% | 2762 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,108 psi | 76% | 2746 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 45,542 psi | 73% | 2746 fps | 95.2% |
| Norma MRP | <<locked>> | 92% | 40,973 psi | 66% | 2749 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 35,302 psi | 57% | 2543 fps | 96.9% |
| Ramshot Big Game | <<locked>> | 80% | 47,195 psi | 76% | 2766 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 82% | 36,579 psi | 59% | 2582 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,514 psi | 44% | 1631 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,498 psi | 73% | 2694 fps | 97.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 51,401 psi | 82% | 2874 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 41,698 psi | 67% | 2746 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,998 psi | 56% | 2562 fps | 96.6% |
| ReloadSwiss RS 70 | 49.3 gr | 80% | 34,258 psi | 55% | 2562 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 80% | 48,573 psi | 78% | 2713 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,250 psi | 68% | 2648 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 94% | 49,458 psi | 79% | 2785 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 92% | 43,207 psi | 69% | 2723 fps | 95% |
| Rottweil R 907 | <<locked>> | 82% | 42,337 psi | 68% | 2625 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,682 psi | 62% | 2552 fps | 96.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 52,344 psi | 84% | 2792 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 46,717 psi | 75% | 2700 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 39,189 psi | 63% | 2582 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,236 psi | 69% | 2697 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,647 psi | 81% | 2785 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,025 psi | 83% | 2700 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,845 psi | 70% | 2566 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 37,826 psi | 61% | 2493 fps | 95% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 45,847 psi | 74% | 2779 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 51,735 psi | 83% | 2697 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 42,685 psi | 68% | 2648 fps | 99.7% |
| Somchem S365 | <<locked>> | 80% | 31,865 psi | 51% | 2500 fps | 98.9% |
| Somchem S385 | <<locked>> | 90% | 41,307 psi | 66% | 2654 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 80% | 52,518 psi | 84% | 2684 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 48,805 psi | 78% | 2684 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,008 psi | 79% | 2694 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,683 psi | 65% | 2579 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 36,695 psi | 59% | 2543 fps | 97.3% |
| Vihtavuori N165 | <<locked>> | 96% | 43,366 psi | 70% | 2687 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 47,297 psi | 76% | 2687 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,158 psi | 58% | 2546 fps | 96.9% |
| Vihtavuori N555 | <<locked>> | 82% | 29,515 psi | 47% | 2434 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,911 psi | 58% | 2516 fps | 99% |
| Winchester 760 | <<locked>> | 82% | 40,176 psi | 64% | 2657 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 86% | 27,151 psi | 44% | 2444 fps | 95.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,575 psi | 81% | 2792 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 46,601 psi | 75% | 2749 fps | 95.7% |
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 92 powders for .270 Win. loaded with the .277 | 140gr | Winchester Silvertip. Alliant Reloder-26 delivers the highest muzzle velocity at 3,048 fps; across all powders the maximum-charge window runs from 1,781 fps to 3,048 fps. Accurate 3100 gives the best case fill at 100 %, and 92 of the 92 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.277" calls for a 1:14.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, Alliant Reloder-22 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-16, Alliant Reloder-26 rank at the top here: for .270 Win. with the .277 | 140gr | Winchester Silvertip 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.