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:1:11.5
Load data in caliber .270 Win. with .277 | 140gr | Nosler Partition bullet and 99 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are IMR 4831, ReloadSwiss RS 70 and Alliant Reloder-16.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 84% | 54,302 psi | 87% | 2756 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 56,173 psi | 90% | 2818 fps | 98.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 48,878 psi | 78% | 2789 fps | 98.5% |
| Accurate 4064 | <<locked>> | 86% | 54,592 psi | 88% | 2808 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 55,071 psi | 88% | 2907 fps | 99.9% |
| Accurate High Countryᴾ | <<locked>> | 100% | 53,548 psi | 86% | 2982 fps | 96.2% |
| ADI AR 2206H | <<locked>> | 82% | 53,954 psi | 87% | 2835 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 54,984 psi | 88% | 2835 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 56,144 psi | 90% | 2943 fps | 97.5% |
| ADI Benchmark 8208 | <<locked>> | 82% | 56,144 psi | 90% | 2831 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 53,940 psi | 86% | 2956 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 55,985 psi | 90% | 2940 fps | 97.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 55,695 psi | 89% | 2861 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 56,130 psi | 90% | 2887 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 55,796 psi | 89% | 2963 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 53,388 psi | 86% | 2936 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 55,143 psi | 88% | 2927 fps | 97.5% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 48,718 psi | 78% | 2864 fps | 96.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 45,992 psi | 74% | 2812 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,263 psi | 65% | 2717 fps | 97.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 52,373 psi | 84% | 2999 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 53,722 psi | 86% | 2848 fps | 99.9% |
| Bofors RP3 | <<locked>> | 88% | 56,405 psi | 90% | 2877 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 48,718 psi | 78% | 2864 fps | 96.3% |
| Bofors RP7 | <<locked>> | 92% | 56,086 psi | 90% | 2858 fps | 98.4% |
| Hodgdon BL-C2 | <<locked>> | 82% | 56,014 psi | 90% | 2861 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 53,432 psi | 86% | 2838 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 92% | 53,795 psi | 86% | 2900 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 90% | 54,012 psi | 87% | 2864 fps | 97.5% |
| Hodgdon H4895 | <<locked>> | 82% | 54,520 psi | 87% | 2844 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 55,898 psi | 90% | 2884 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 54,708 psi | 88% | 2884 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 53,708 psi | 86% | 2933 fps | 98.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,172 psi | 58% | 1765 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 55,680 psi | 89% | 2844 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 55,143 psi | 88% | 2825 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 54,752 psi | 88% | 2822 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 53,983 psi | 87% | 2799 fps | 98.5% |
| IMR 4350 | <<locked>> | 94% | 53,388 psi | 86% | 2835 fps | 98% |
| IMR 4451 Enduron | <<locked>> | 90% | 54,317 psi | 87% | 2831 fps | 98.5% |
| IMR 4831 | <<locked>> | 96% | 55,303 psi | 89% | 2894 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 54,085 psi | 87% | 2864 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 56,144 psi | 90% | 2831 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 54,085 psi | 87% | 2808 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 53,214 psi | 85% | 2762 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 54,839 psi | 88% | 2818 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 54,143 psi | 87% | 2828 fps | 99.4% |
| Lovex S070 | <<locked>> | 94% | 55,376 psi | 89% | 2871 fps | 98.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 40,669 psi | 65% | 2638 fps | 96.7% |
| Norma 201 | <<locked>> | 84% | 56,115 psi | 90% | 2828 fps | 100% |
| Norma 202 | <<locked>> | 82% | 53,490 psi | 86% | 2779 fps | 100% |
| Norma 203B | <<locked>> | 86% | 55,361 psi | 89% | 2871 fps | 100% |
| Norma 204 | <<locked>> | 94% | 53,940 psi | 86% | 2884 fps | 97% |
| Norma MRPᴾ | <<locked>> | 100% | 51,808 psi | 83% | 2953 fps | 98.3% |
| Norma URP | <<locked>> | 94% | 53,795 psi | 86% | 2890 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 86% | 55,956 psi | 90% | 2894 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 55,999 psi | 90% | 2940 fps | 99.4% |
| Ramshot TAC | <<locked>> | 82% | 56,260 psi | 90% | 2854 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,608 psi | 59% | 1804 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 53,505 psi | 86% | 2822 fps | 98.9% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 53,098 psi | 85% | 2894 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 52,910 psi | 85% | 2933 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 54,810 psi | 88% | 2927 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 53,534 psi | 86% | 2953 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 84% | 53,548 psi | 86% | 2782 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 53,040 psi | 85% | 2825 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 54,375 psi | 87% | 2854 fps | 96% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 54,346 psi | 87% | 2913 fps | 97.5% |
| Rottweil R 907 | <<locked>> | 92% | 56,086 psi | 90% | 2858 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 92% | 54,143 psi | 87% | 2828 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 82% | 54,085 psi | 87% | 2808 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 54,839 psi | 88% | 2818 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 55,376 psi | 89% | 2871 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 54,476 psi | 87% | 2881 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 55,216 psi | 89% | 2838 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 55,985 psi | 90% | 2858 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 53,722 psi | 86% | 2713 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 54,476 psi | 87% | 2717 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 53,896 psi | 86% | 2779 fps | 98.5% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 53,853 psi | 86% | 2907 fps | 97.4% |
| Somchem S335 | <<locked>> | 82% | 53,403 psi | 86% | 2713 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 54,723 psi | 88% | 2825 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 53,055 psi | 85% | 2818 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 56,159 psi | 90% | 2946 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 54,984 psi | 88% | 2890 fps | 98.3% |
| Vihtavuori N133 | <<locked>> | 82% | 54,215 psi | 87% | 2697 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 53,606 psi | 86% | 2743 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 53,853 psi | 86% | 2756 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 54,462 psi | 87% | 2799 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 56,188 psi | 90% | 2887 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 47,398 psi | 76% | 2753 fps | 96.4% |
| Vihtavuori N540 | <<locked>> | 86% | 55,535 psi | 89% | 2802 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 55,085 psi | 88% | 2890 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 51,314 psi | 82% | 2890 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 55,985 psi | 90% | 2861 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 53,795 psi | 86% | 2900 fps | 98.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,292 psi | 66% | 2848 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 56,028 psi | 90% | 2867 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 51,648 psi | 83% | 2828 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% | 47,703 psi | 76% | 2661 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,180 psi | 74% | 2654 fps | 96.3% |
| Accurate 3100 | <<locked>> | 92% | 37,130 psi | 60% | 2566 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 45,165 psi | 72% | 2661 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 33,924 psi | 54% | 2507 fps | 96.4% |
| Accurate High Country | <<locked>> | 98% | 49,777 psi | 80% | 2920 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 50,691 psi | 81% | 2782 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 43,134 psi | 69% | 2635 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 94% | 46,325 psi | 74% | 2769 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 52,765 psi | 85% | 2782 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,862 psi | 75% | 2835 fps | 99.6% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 46,325 psi | 74% | 2769 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,352 psi | 70% | 2657 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,282 psi | 74% | 2723 fps | 99.6% |
| Alliant Reloder-16 | 43.6 gr | 80% | 33,533 psi | 54% | 2516 fps | 96.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,739 psi | 61% | 2644 fps | 99.1% |
| Alliant Reloder-19 | <<locked>> | 94% | 45,730 psi | 73% | 2762 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 98% | 45,672 psi | 73% | 2805 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 84% | 27,717 psi | 44% | 2375 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 96% | 35,607 psi | 57% | 2605 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 88% | 34,069 psi | 55% | 2612 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,285 psi | 81% | 2792 fps | 99.7% |
| Bofors RP3 | <<locked>> | 80% | 43,352 psi | 70% | 2667 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 45,672 psi | 73% | 2805 fps | 95.4% |
| Bofors RP7 | <<locked>> | 82% | 41,089 psi | 66% | 2589 fps | 95.1% |
| Hodgdon BL-C2 | <<locked>> | 80% | 52,344 psi | 84% | 2808 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,918 psi | 70% | 2674 fps | 98.5% |
| Hodgdon H414 | <<locked>> | 84% | 41,234 psi | 66% | 2671 fps | 95.9% |
| Hodgdon H4350 | <<locked>> | 84% | 44,585 psi | 71% | 2694 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 51,213 psi | 82% | 2789 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,183 psi | 50% | 2421 fps | 97.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,645 psi | 76% | 2769 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 40,480 psi | 65% | 2680 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,948 psi | 43% | 1578 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,139 psi | 79% | 2743 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 51,634 psi | 83% | 2776 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,353 psi | 73% | 2667 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,776 psi | 77% | 2694 fps | 97.4% |
| IMR 4350 | <<locked>> | 86% | 41,495 psi | 67% | 2618 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 39,987 psi | 64% | 2566 fps | 95.2% |
| IMR 4831 | 44.5 gr | 80% | 32,793 psi | 53% | 2464 fps | 96% |
| IMR 4895 | <<locked>> | 80% | 47,427 psi | 76% | 2753 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 80% | 52,765 psi | 85% | 2782 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 50,763 psi | 81% | 2759 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,038 psi | 80% | 2710 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 45,498 psi | 73% | 2667 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,376 psi | 60% | 2513 fps | 96% |
| Lovex S070 | <<locked>> | 82% | 37,971 psi | 61% | 2543 fps | 95% |
| Lovex S071 | <<locked>> | 96% | 35,810 psi | 57% | 2536 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 49,559 psi | 79% | 2726 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,212 psi | 81% | 2730 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,672 psi | 73% | 2710 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 47,094 psi | 76% | 2766 fps | 95.4% |
| Norma MRP | <<locked>> | 94% | 41,916 psi | 67% | 2762 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 33,953 psi | 54% | 2503 fps | 96.2% |
| Ramshot Big Game | <<locked>> | 80% | 45,614 psi | 73% | 2730 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 84% | 37,753 psi | 61% | 2602 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 52,721 psi | 85% | 2799 fps | 99.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,398 psi | 44% | 1614 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,019 psi | 71% | 2654 fps | 97.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 49,734 psi | 80% | 2838 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 40,118 psi | 64% | 2703 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,678 psi | 54% | 2523 fps | 95.9% |
| ReloadSwiss RS 70 | 48.9 gr | 82% | 35,389 psi | 57% | 2582 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 47,297 psi | 76% | 2680 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 40,770 psi | 65% | 2608 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 96% | 51,039 psi | 82% | 2802 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 94% | 44,628 psi | 72% | 2743 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 82% | 41,089 psi | 66% | 2589 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,376 psi | 60% | 2513 fps | 96% |
| Shooters World Match Rifle | <<locked>> | 80% | 50,763 psi | 81% | 2759 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,498 psi | 73% | 2667 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 37,971 psi | 61% | 2543 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,901 psi | 67% | 2664 fps | 99.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,576 psi | 83% | 2782 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,269 psi | 79% | 2753 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,676 psi | 81% | 2671 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,656 psi | 68% | 2539 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 39,073 psi | 63% | 2510 fps | 95.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 44,193 psi | 71% | 2736 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 50,227 psi | 81% | 2667 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 51,126 psi | 82% | 2772 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 41,249 psi | 66% | 2612 fps | 99.5% |
| Somchem S365 | <<locked>> | 80% | 30,618 psi | 49% | 2464 fps | 98.4% |
| Somchem S385 | <<locked>> | 92% | 42,366 psi | 68% | 2667 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 80% | 51,184 psi | 82% | 2657 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,355 psi | 76% | 2654 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,529 psi | 76% | 2664 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,334 psi | 63% | 2546 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 35,375 psi | 57% | 2507 fps | 96.7% |
| Vihtavuori N165 | <<locked>> | 98% | 44,411 psi | 71% | 2697 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 45,963 psi | 74% | 2657 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,940 psi | 56% | 2510 fps | 96.3% |
| Vihtavuori N555 | <<locked>> | 84% | 30,226 psi | 48% | 2451 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,751 psi | 56% | 2480 fps | 98.6% |
| Winchester 760 | <<locked>> | 82% | 38,682 psi | 62% | 2615 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 88% | 27,905 psi | 45% | 2461 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 48,907 psi | 78% | 2756 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 48,022 psi | 77% | 2766 fps | 95.8% |
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 99 powders for .270 Win. loaded with the .277 | 140gr | Nosler Partition. Alliant Reloder-26 delivers the highest muzzle velocity at 2,999 fps; across all powders the maximum-charge window runs from 1,765 fps to 2,999 fps. Accurate 3100 gives the best case fill at 100 %, and 99 of the 99 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 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, ADI AR 2209 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. IMR 4831, ReloadSwiss RS 70, Alliant Reloder-16 rank at the top here: for .270 Win. with the .277 | 140gr | Nosler Partition 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.