Load Specifications
Bullet Manufacturer:Nosler
Bullet Weight:140 gr
Bullet Diameter:0.277"
Bullet Length:<<locked>>
Caliber:.270 Win. load data
Case Length (l3):2.54"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:67 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:62,366 psi
Recommended Twist Rate:1:11.0
Load data in caliber .270 Win. with .277 | 140gr | Nosler CT FailSafe bullet and 100 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 Hodgdon Superformance.
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% | 53,417 psi | 86% | 2740 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 55,245 psi | 89% | 2799 fps | 98% |
| Accurate 3100ᴾ | <<locked>> | 100% | 48,008 psi | 77% | 2769 fps | 98.3% |
| Accurate 4064 | <<locked>> | 86% | 53,751 psi | 86% | 2792 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 54,099 psi | 87% | 2890 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 82% | 53,185 psi | 85% | 2815 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 54,331 psi | 87% | 2822 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 55,376 psi | 89% | 2923 fps | 97.3% |
| ADI Benchmark 8208 | <<locked>> | 82% | 55,376 psi | 89% | 2815 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 53,200 psi | 85% | 2940 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 55,201 psi | 89% | 2920 fps | 97.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 54,969 psi | 88% | 2848 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 55,376 psi | 89% | 2871 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 54,868 psi | 88% | 2943 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 55,999 psi | 90% | 2972 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 54,375 psi | 87% | 2910 fps | 97.2% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 47,935 psi | 77% | 2844 fps | 95.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 45,194 psi | 72% | 2795 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,668 psi | 64% | 2700 fps | 97% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 51,285 psi | 82% | 2976 fps | 99.8% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 53,098 psi | 85% | 2831 fps | 99.8% |
| Bofors RP3 | <<locked>> | 88% | 55,666 psi | 89% | 2864 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 47,935 psi | 77% | 2844 fps | 95.9% |
| Bofors RP7 | <<locked>> | 92% | 55,187 psi | 88% | 2838 fps | 98.2% |
| Hodgdon BL-C2 | <<locked>> | 82% | 55,288 psi | 89% | 2848 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 56,202 psi | 90% | 2877 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 94% | 56,362 psi | 90% | 2936 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 90% | 53,098 psi | 85% | 2841 fps | 97.2% |
| Hodgdon H4895 | <<locked>> | 82% | 53,737 psi | 86% | 2825 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 54,911 psi | 88% | 2867 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 53,679 psi | 86% | 2864 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 52,953 psi | 85% | 2917 fps | 98.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,056 psi | 58% | 1759 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 54,969 psi | 88% | 2831 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 54,201 psi | 87% | 2808 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 54,027 psi | 87% | 2808 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 53,359 psi | 86% | 2785 fps | 98.3% |
| IMR 4350 | <<locked>> | 96% | 55,927 psi | 90% | 2871 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 90% | 53,737 psi | 86% | 2815 fps | 98.3% |
| IMR 4831 | <<locked>> | 96% | 54,360 psi | 87% | 2877 fps | 99.9% |
| IMR 4895 | <<locked>> | 84% | 53,040 psi | 85% | 2841 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 55,376 psi | 89% | 2815 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 53,287 psi | 85% | 2795 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 55,825 psi | 90% | 2795 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 54,114 psi | 87% | 2805 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 53,534 psi | 86% | 2815 fps | 99.3% |
| Lovex S070 | <<locked>> | 94% | 54,462 psi | 87% | 2851 fps | 98.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 39,856 psi | 64% | 2618 fps | 96.4% |
| Norma 201 | <<locked>> | 84% | 55,332 psi | 89% | 2812 fps | 100% |
| Norma 202 | <<locked>> | 84% | 56,159 psi | 90% | 2812 fps | 100% |
| Norma 203B | <<locked>> | 86% | 54,636 psi | 88% | 2854 fps | 100% |
| Norma 204 | <<locked>> | 94% | 53,055 psi | 85% | 2864 fps | 96.7% |
| Norma MRPᴾ | <<locked>> | 100% | 50,734 psi | 81% | 2930 fps | 98% |
| Norma URP | <<locked>> | 96% | 56,420 psi | 90% | 2927 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 86% | 55,013 psi | 88% | 2877 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 55,158 psi | 88% | 2923 fps | 99.3% |
| Ramshot TAC | <<locked>> | 82% | 55,651 psi | 89% | 2841 fps | 99.5% |
| Ramshot Wild Boar | <<locked>> | 82% | 55,477 psi | 89% | 2854 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,767 psi | 59% | 1801 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 56,289 psi | 90% | 2861 fps | 99.1% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 56,173 psi | 90% | 2936 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 55,782 psi | 89% | 2969 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 53,563 psi | 86% | 2907 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 56,289 psi | 90% | 2992 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 82% | 56,391 psi | 90% | 2792 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 55,927 psi | 90% | 2812 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 55,550 psi | 89% | 2854 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 53,461 psi | 86% | 2894 fps | 97.2% |
| Rottweil R 907 | <<locked>> | 92% | 55,187 psi | 88% | 2838 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 92% | 53,534 psi | 86% | 2815 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 82% | 53,287 psi | 85% | 2795 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 54,114 psi | 87% | 2805 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 54,462 psi | 87% | 2851 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 53,534 psi | 86% | 2861 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 54,215 psi | 87% | 2818 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 55,317 psi | 89% | 2844 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 53,243 psi | 85% | 2700 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 53,780 psi | 86% | 2703 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 53,330 psi | 86% | 2766 fps | 98.3% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 52,968 psi | 85% | 2887 fps | 97.1% |
| Somchem S335 | <<locked>> | 84% | 55,985 psi | 90% | 2743 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 54,041 psi | 87% | 2812 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 55,753 psi | 89% | 2851 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 55,158 psi | 88% | 2930 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 54,186 psi | 87% | 2871 fps | 98% |
| Vihtavuori N133 | <<locked>> | 82% | 53,693 psi | 86% | 2687 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 56,246 psi | 90% | 2776 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 53,113 psi | 85% | 2743 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 53,519 psi | 86% | 2779 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 55,230 psi | 89% | 2871 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 46,659 psi | 75% | 2733 fps | 96.1% |
| Vihtavuori N530 | <<locked>> | 82% | 55,854 psi | 90% | 2815 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 54,882 psi | 88% | 2789 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 54,230 psi | 87% | 2874 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 50,386 psi | 81% | 2871 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 54,882 psi | 88% | 2838 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 52,866 psi | 85% | 2881 fps | 98.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,640 psi | 65% | 2831 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 55,317 psi | 89% | 2851 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 50,604 psi | 81% | 2805 fps | 96.3% |
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% | 47,137 psi | 76% | 2651 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 45,571 psi | 73% | 2638 fps | 96% |
| Accurate 3100 | <<locked>> | 92% | 36,550 psi | 59% | 2549 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 44,599 psi | 72% | 2651 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 33,214 psi | 53% | 2487 fps | 96% |
| ADI AR 2206H | <<locked>> | 80% | 49,951 psi | 80% | 2766 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 42,409 psi | 68% | 2615 fps | 98.9% |
| ADI AR 2209 | <<locked>> | 96% | 48,602 psi | 78% | 2808 fps | 95.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 52,011 psi | 83% | 2766 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,137 psi | 74% | 2815 fps | 99.5% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 45,527 psi | 73% | 2749 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,612 psi | 68% | 2641 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,513 psi | 73% | 2707 fps | 99.5% |
| Alliant Reloder-16 | 43 gr | 80% | 33,141 psi | 53% | 2500 fps | 96.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,144 psi | 60% | 2625 fps | 99% |
| Alliant Reloder-19 | <<locked>> | 96% | 47,863 psi | 77% | 2795 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 98% | 44,918 psi | 72% | 2789 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 86% | 29,008 psi | 47% | 2411 fps | 96% |
| Alliant Reloder-25 | <<locked>> | 96% | 34,969 psi | 56% | 2582 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 88% | 33,402 psi | 54% | 2589 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,588 psi | 80% | 2776 fps | 99.6% |
| Bofors RP3 | <<locked>> | 80% | 42,641 psi | 68% | 2651 fps | 99.8% |
| Bofors RP5 | <<locked>> | 98% | 44,918 psi | 72% | 2789 fps | 95.1% |
| Bofors RP7 | <<locked>> | 84% | 43,091 psi | 69% | 2621 fps | 95.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 51,648 psi | 83% | 2792 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,265 psi | 69% | 2654 fps | 98.3% |
| Hodgdon H414 | <<locked>> | 84% | 40,611 psi | 65% | 2654 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 84% | 43,976 psi | 71% | 2677 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 50,459 psi | 81% | 2776 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,560 psi | 49% | 2398 fps | 96.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,905 psi | 75% | 2753 fps | 100% |
| Hodgdon Superformance | 52.6 gr | 86% | 42,627 psi | 68% | 2723 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,948 psi | 43% | 1572 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,399 psi | 78% | 2726 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 51,010 psi | 82% | 2762 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,585 psi | 71% | 2648 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,108 psi | 76% | 2677 fps | 97.2% |
| IMR 4350 | <<locked>> | 88% | 43,540 psi | 70% | 2654 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 82% | 41,916 psi | 67% | 2602 fps | 95.7% |
| IMR 4831 | <<locked>> | 80% | 32,343 psi | 52% | 2448 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 46,688 psi | 75% | 2736 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 80% | 52,011 psi | 83% | 2766 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 49,966 psi | 80% | 2743 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,342 psi | 79% | 2694 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 44,715 psi | 72% | 2651 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 36,970 psi | 59% | 2500 fps | 95.8% |
| Lovex S070 | <<locked>> | 84% | 39,798 psi | 64% | 2579 fps | 95.5% |
| Lovex S071 | <<locked>> | 98% | 37,231 psi | 60% | 2562 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 49,037 psi | 79% | 2713 fps | 100% |
| Norma 202 | <<locked>> | 80% | 49,429 psi | 79% | 2713 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,918 psi | 72% | 2694 fps | 99.6% |
| Norma 204 | <<locked>> | 90% | 46,325 psi | 74% | 2746 fps | 95% |
| Norma MRP | <<locked>> | 94% | 41,205 psi | 66% | 2743 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 33,518 psi | 54% | 2490 fps | 96% |
| Ramshot Big Game | <<locked>> | 80% | 44,904 psi | 72% | 2713 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 37,188 psi | 60% | 2585 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 52,127 psi | 84% | 2785 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 52,112 psi | 84% | 2805 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,412 psi | 44% | 1611 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,395 psi | 70% | 2638 fps | 96.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,936 psi | 78% | 2822 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,479 psi | 63% | 2687 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,069 psi | 53% | 2503 fps | 95.5% |
| ReloadSwiss RS 70 | 48.2 gr | 82% | 34,896 psi | 56% | 2566 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 52,968 psi | 85% | 2743 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 46,789 psi | 75% | 2667 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 40,248 psi | 65% | 2595 fps | 99.4% |
| Rottweil R 905 | <<locked>> | 96% | 46,804 psi | 75% | 2779 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 84% | 43,091 psi | 69% | 2621 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,970 psi | 59% | 2500 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,966 psi | 80% | 2743 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,715 psi | 72% | 2651 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 39,798 psi | 64% | 2579 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,220 psi | 66% | 2648 fps | 99.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,879 psi | 82% | 2766 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,573 psi | 78% | 2736 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,864 psi | 80% | 2654 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,916 psi | 67% | 2520 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 41,017 psi | 66% | 2546 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 46,354 psi | 74% | 2776 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 49,763 psi | 80% | 2654 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,473 psi | 81% | 2753 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 40,770 psi | 65% | 2598 fps | 99.4% |
| Somchem S365 | <<locked>> | 80% | 30,023 psi | 48% | 2441 fps | 98.1% |
| Somchem S385 | <<locked>> | 92% | 41,611 psi | 67% | 2648 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 80% | 50,343 psi | 81% | 2641 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,485 psi | 75% | 2635 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,050 psi | 75% | 2651 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,914 psi | 62% | 2533 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 34,722 psi | 56% | 2487 fps | 96.4% |
| Vihtavuori N165 | <<locked>> | 98% | 43,714 psi | 70% | 2677 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 52,359 psi | 84% | 2762 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 45,295 psi | 73% | 2641 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,330 psi | 55% | 2490 fps | 96% |
| Vihtavuori N555 | <<locked>> | 84% | 29,588 psi | 47% | 2431 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,258 psi | 55% | 2464 fps | 98.4% |
| Winchester 760 | <<locked>> | 84% | 40,611 psi | 65% | 2654 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 88% | 27,325 psi | 44% | 2434 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 48,196 psi | 77% | 2740 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 47,297 psi | 76% | 2746 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 100 powders for .270 Win. loaded with the .277 | 140gr | Nosler CT FailSafe. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,992 fps; across all powders the maximum-charge window runs from 1,759 fps to 2,992 fps. Accurate 3100 gives the best case fill at 100 %, and 100 of the 100 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 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Power Pro Varmint 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, Hodgdon Superformance rank at the top here: for .270 Win. with the .277 | 140gr | Nosler CT FailSafe 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.