Load Specifications
Bullet Manufacturer:Nosler
Bullet Weight:160 gr
Bullet Diameter:0.277"
Bullet Length:<<locked>>
Case Length (l3):2.54"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:70 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:72,519 psi
Recommended Twist Rate:1:10.5
Load data in caliber .270 Win. Ackley Improved with .277 | 160gr | Nosler Partition bullet and 121 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon Superformance and Ramshot Hunter.
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 2015 | <<locked>> | 82% | 64,310 psi | 89% | 2667 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 65,064 psi | 90% | 2707 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 64,614 psi | 89% | 2766 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 63,817 psi | 88% | 2762 fps | 99.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 56,594 psi | 78% | 2746 fps | 100% |
| Accurate 4064 | <<locked>> | 88% | 65,296 psi | 90% | 2762 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 62,946 psi | 87% | 2838 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 55,666 psi | 77% | 2838 fps | 96.4% |
| ADI APS 450 | <<locked>> | 86% | 64,745 psi | 89% | 2136 fps | 100% |
| ADI AR 2206H | <<locked>> | 84% | 63,599 psi | 88% | 2795 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 64,716 psi | 89% | 2799 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 63,628 psi | 88% | 2894 fps | 99.6% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 57,029 psi | 79% | 2835 fps | 98.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 36,724 psi | 51% | 2510 fps | 96.2% |
| ADI Benchmark 8208 | <<locked>> | 82% | 62,105 psi | 86% | 2740 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 64,875 psi | 89% | 2697 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 61,264 psi | 84% | 2881 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 63,570 psi | 88% | 2884 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 62,265 psi | 86% | 2776 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 62,598 psi | 86% | 2802 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 63,280 psi | 87% | 2887 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 65,543 psi | 90% | 2913 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 62,613 psi | 86% | 2877 fps | 99.6% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 56,159 psi | 77% | 2831 fps | 99.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 53,330 psi | 74% | 2759 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,180 psi | 64% | 2700 fps | 99.8% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 61,989 psi | 85% | 2959 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 64,339 psi | 89% | 2825 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 51,590 psi | 71% | 2759 fps | 98.4% |
| Bofors RP3 | <<locked>> | 88% | 63,440 psi | 87% | 2792 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 56,159 psi | 77% | 2831 fps | 99.1% |
| Bofors RP7 | <<locked>> | 92% | 62,323 psi | 86% | 2789 fps | 99.8% |
| Hodgdon Benchmark | <<locked>> | 82% | 63,106 psi | 87% | 2710 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 62,598 psi | 86% | 2772 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 63,947 psi | 88% | 2818 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 62,511 psi | 86% | 2864 fps | 100% |
| Hodgdon H4350 | <<locked>> | 94% | 62,091 psi | 86% | 2825 fps | 99.6% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 52,649 psi | 73% | 2713 fps | 96.7% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 59,901 psi | 83% | 2818 fps | 98% |
| Hodgdon H4895 | <<locked>> | 84% | 64,411 psi | 89% | 2802 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 63,846 psi | 88% | 2808 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 61,554 psi | 85% | 2795 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 45,179 psi | 62% | 2736 fps | 98% |
| Hodgdon Superformance | <<locked>> | 92% | 62,018 psi | 86% | 2890 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,506 psi | 50% | 1667 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 64,484 psi | 89% | 2789 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 64,136 psi | 88% | 2753 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 63,570 psi | 88% | 2772 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 90% | 62,207 psi | 86% | 2762 fps | 99.9% |
| IMR 4350 | <<locked>> | 96% | 63,338 psi | 87% | 2822 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 92% | 63,831 psi | 88% | 2812 fps | 100% |
| IMR 4831ᴾ | <<locked>> | 100% | 63,701 psi | 88% | 2835 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 64,252 psi | 89% | 2825 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 62,468 psi | 86% | 2818 fps | 98.5% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 59,016 psi | 81% | 2877 fps | 98.6% |
| IMR 8208 XBR | <<locked>> | 82% | 62,105 psi | 86% | 2740 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 64,963 psi | 90% | 2769 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 65,572 psi | 90% | 2759 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 64,498 psi | 89% | 2772 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 64,034 psi | 88% | 2805 fps | 100% |
| Lovex S070 | <<locked>> | 94% | 61,917 psi | 85% | 2802 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,050 psi | 65% | 2605 fps | 99.3% |
| Norma 201 | <<locked>> | 84% | 62,265 psi | 86% | 2736 fps | 100% |
| Norma 202 | <<locked>> | 84% | 62,874 psi | 87% | 2726 fps | 100% |
| Norma 203B | <<locked>> | 86% | 61,859 psi | 85% | 2789 fps | 100% |
| Norma 204 | <<locked>> | 96% | 65,093 psi | 90% | 2887 fps | 99.6% |
| Norma MRPᴾ | <<locked>> | 100% | 60,060 psi | 83% | 2913 fps | 99.9% |
| Norma URP | <<locked>> | 96% | 65,209 psi | 90% | 2874 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 63,208 psi | 87% | 2818 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 63,498 psi | 88% | 2949 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 96% | 63,701 psi | 88% | 2881 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 55,463 psi | 76% | 2805 fps | 99.4% |
| Ramshot TAC | <<locked>> | 82% | 62,192 psi | 86% | 2776 fps | 100% |
| Ramshot Wild Boar | <<locked>> | 82% | 62,801 psi | 87% | 2785 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,304 psi | 51% | 1709 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 63,570 psi | 88% | 2805 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 64,440 psi | 89% | 2874 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 64,977 psi | 90% | 2900 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 62,917 psi | 87% | 2867 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 61,192 psi | 84% | 2897 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 45,049 psi | 62% | 2730 fps | 98.8% |
| Rottweil R 901 | <<locked>> | 82% | 62,961 psi | 87% | 2707 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 62,874 psi | 87% | 2736 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 63,643 psi | 88% | 2789 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 65,166 psi | 90% | 2858 fps | 99.1% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 62,207 psi | 86% | 2867 fps | 99.6% |
| Rottweil R 907 | <<locked>> | 92% | 62,323 psi | 86% | 2789 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 94% | 64,034 psi | 88% | 2805 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 84% | 64,963 psi | 90% | 2769 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 64,498 psi | 89% | 2772 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 61,917 psi | 85% | 2802 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 65,398 psi | 90% | 2851 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 61,569 psi | 85% | 2762 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 62,163 psi | 86% | 2772 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 62,714 psi | 86% | 2657 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 64,107 psi | 88% | 2664 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 64,107 psi | 88% | 2766 fps | 100% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 61,699 psi | 85% | 2864 fps | 99.6% |
| Somchem S335 | <<locked>> | 84% | 62,497 psi | 86% | 2657 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 65,485 psi | 90% | 2792 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 63,034 psi | 87% | 2779 fps | 100% |
| Somchem S361 | <<locked>> | 98% | 63,396 psi | 87% | 2802 fps | 98.4% |
| Somchem S365 | <<locked>> | 98% | 65,006 psi | 90% | 2867 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 62,642 psi | 86% | 2838 fps | 99.9% |
| Unknown powder | <<locked>> | 92% | 61,728 psi | 85% | 2828 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 63,237 psi | 87% | 2635 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 63,512 psi | 88% | 2687 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 63,599 psi | 88% | 2707 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 64,774 psi | 89% | 2753 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 63,309 psi | 87% | 2812 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 54,331 psi | 75% | 2713 fps | 99.1% |
| Vihtavuori N530 | <<locked>> | 82% | 62,801 psi | 87% | 2740 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 61,656 psi | 85% | 2707 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 62,366 psi | 86% | 2822 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 59,524 psi | 82% | 2831 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 60,176 psi | 83% | 2910 fps | 98.4% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 48,138 psi | 66% | 2707 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 63,382 psi | 87% | 2779 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 62,511 psi | 86% | 2864 fps | 100% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 48,791 psi | 67% | 2828 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 61,264 psi | 84% | 2812 fps | 99.4% |
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 2015 | <<locked>> | 80% | 60,510 psi | 83% | 2625 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 53,896 psi | 74% | 2575 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 60,408 psi | 83% | 2713 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 45,977 psi | 63% | 2500 fps | 97.9% |
| Accurate 3100 | <<locked>> | 82% | 30,922 psi | 43% | 2280 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 51,126 psi | 71% | 2585 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,305 psi | 54% | 2477 fps | 99.2% |
| Accurate MAGPRO | <<locked>> | 98% | 51,851 psi | 72% | 2776 fps | 95.5% |
| ADI APS 450 | <<locked>> | 80% | 58,552 psi | 81% | 2057 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 56,420 psi | 78% | 2700 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 47,805 psi | 66% | 2562 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 40,364 psi | 56% | 2510 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 92% | 43,700 psi | 60% | 2605 fps | 95% |
| ADI AR 2225 | <<locked>> | 98% | 34,592 psi | 48% | 2454 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 58,494 psi | 81% | 2694 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 60,887 psi | 84% | 2651 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 53,243 psi | 73% | 2772 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 40,625 psi | 56% | 2513 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,530 psi | 67% | 2585 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,924 psi | 72% | 2654 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,043 psi | 52% | 2484 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,221 psi | 60% | 2602 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 40,205 psi | 55% | 2510 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 90% | 40,393 psi | 56% | 2556 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,021 psi | 39% | 2257 fps | 97.7% |
| Alliant Reloder-25 | <<locked>> | 88% | 31,575 psi | 44% | 2372 fps | 96% |
| Alliant Reloder-26 | <<locked>> | 80% | 29,907 psi | 41% | 2365 fps | 96.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 56,246 psi | 78% | 2720 fps | 100% |
| Bofors RP15 | <<locked>> | 92% | 39,842 psi | 55% | 2543 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 48,863 psi | 67% | 2598 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 40,393 psi | 56% | 2556 fps | 95.9% |
| Bofors RP7 | <<locked>> | 80% | 42,917 psi | 59% | 2484 fps | 97.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 59,509 psi | 82% | 2667 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 58,624 psi | 81% | 2723 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 49,139 psi | 68% | 2612 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 44,614 psi | 62% | 2589 fps | 98.3% |
| Hodgdon H4350 | <<locked>> | 80% | 40,480 psi | 56% | 2467 fps | 96% |
| Hodgdon H4831 | <<locked>> | 96% | 46,383 psi | 64% | 2605 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 92% | 45,847 psi | 63% | 2595 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 57,116 psi | 79% | 2710 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,650 psi | 49% | 2382 fps | 99.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,633 psi | 70% | 2648 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 37,347 psi | 52% | 2556 fps | 95% |
| Hodgdon Superformance | 50.4 gr | 80% | 39,943 psi | 55% | 2530 fps | 96.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,354 psi | 38% | 1490 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,589 psi | 70% | 2605 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 53,287 psi | 73% | 2621 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,978 psi | 65% | 2539 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,006 psi | 63% | 2516 fps | 98.5% |
| IMR 4350 | <<locked>> | 80% | 38,580 psi | 53% | 2418 fps | 96.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,324 psi | 61% | 2513 fps | 98.1% |
| IMR 4831 | <<locked>> | 80% | 34,127 psi | 47% | 2352 fps | 98.1% |
| IMR 4895 | <<locked>> | 80% | 53,258 psi | 73% | 2680 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 45,905 psi | 63% | 2562 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 92% | 44,875 psi | 62% | 2641 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 58,494 psi | 81% | 2694 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 56,826 psi | 78% | 2671 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 54,868 psi | 76% | 2625 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 50,604 psi | 70% | 2589 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,989 psi | 58% | 2467 fps | 98.8% |
| Lovex S070 | <<locked>> | 80% | 40,263 psi | 56% | 2451 fps | 97.5% |
| Lovex S071 | <<locked>> | 88% | 32,213 psi | 44% | 2313 fps | 95.8% |
| Norma 201 | <<locked>> | 80% | 55,158 psi | 76% | 2644 fps | 100% |
| Norma 202 | <<locked>> | 80% | 55,709 psi | 77% | 2638 fps | 100% |
| Norma 203B | <<locked>> | 80% | 51,285 psi | 71% | 2641 fps | 100% |
| Norma 204 | <<locked>> | 82% | 40,698 psi | 56% | 2497 fps | 95.5% |
| Norma MRP | <<locked>> | 84% | 34,519 psi | 48% | 2451 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 38,943 psi | 54% | 2467 fps | 99.1% |
| Ramshot Big Game | <<locked>> | 80% | 51,532 psi | 71% | 2664 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 43,801 psi | 60% | 2631 fps | 95.6% |
| Ramshot Hunter | 46.9 gr | 80% | 37,579 psi | 52% | 2454 fps | 97.4% |
| Ramshot Magnum | <<locked>> | 90% | 38,043 psi | 52% | 2497 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 58,363 psi | 80% | 2726 fps | 100% |
| Ramshot Wild Boar | <<locked>> | 80% | 58,842 psi | 81% | 2736 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,905 psi | 38% | 1526 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,240 psi | 68% | 2602 fps | 99.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 56,130 psi | 77% | 2766 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,905 psi | 63% | 2648 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,870 psi | 54% | 2490 fps | 98.9% |
| ReloadSwiss RS 70 | 48.4 gr | 80% | 37,579 psi | 52% | 2500 fps | 98.5% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 36,724 psi | 51% | 2543 fps | 96.1% |
| Rottweil R 901 | <<locked>> | 80% | 59,277 psi | 82% | 2661 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 52,388 psi | 72% | 2598 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 46,282 psi | 64% | 2552 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 44,686 psi | 62% | 2546 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 86% | 39,247 psi | 54% | 2490 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 42,917 psi | 59% | 2484 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,989 psi | 58% | 2467 fps | 98.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 56,826 psi | 78% | 2671 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 50,604 psi | 70% | 2589 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,263 psi | 56% | 2451 fps | 97.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,195 psi | 65% | 2602 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 57,638 psi | 79% | 2710 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 54,621 psi | 75% | 2671 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 55,724 psi | 77% | 2572 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,268 psi | 65% | 2454 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,104 psi | 57% | 2415 fps | 97.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 38,885 psi | 54% | 2487 fps | 95.4% |
| Somchem S335 | <<locked>> | 80% | 55,535 psi | 77% | 2575 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 57,145 psi | 79% | 2694 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 46,485 psi | 64% | 2549 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 45,716 psi | 63% | 2539 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 35,360 psi | 49% | 2428 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 37,260 psi | 51% | 2421 fps | 95.8% |
| Unknown powder | <<locked>> | 80% | 41,916 psi | 58% | 2520 fps | 99.2% |
| Vihtavuori N133 | <<locked>> | 80% | 56,304 psi | 78% | 2556 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 52,939 psi | 73% | 2562 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 53,055 psi | 73% | 2575 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 44,411 psi | 61% | 2480 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,379 psi | 56% | 2467 fps | 99.3% |
| Vihtavuori N165 | <<locked>> | 88% | 36,724 psi | 51% | 2402 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 58,697 psi | 81% | 2687 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 50,995 psi | 70% | 2569 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,595 psi | 55% | 2467 fps | 99% |
| Vihtavuori N555 | <<locked>> | 80% | 31,067 psi | 43% | 2333 fps | 97.7% |
| Vihtavuori N560 | <<locked>> | 92% | 45,658 psi | 63% | 2671 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 98% | 44,889 psi | 62% | 2651 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,204 psi | 54% | 2434 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 44,614 psi | 62% | 2589 fps | 98.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,656 psi | 34% | 2234 fps | 96.7% |
| Winchester Supreme 780 | <<locked>> | 86% | 39,914 psi | 55% | 2474 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 121 powders for .270 Win. Ackley Improved loaded with the .277 | 160gr | Nosler Partition. Alliant Reloder-26 delivers the highest muzzle velocity at 2,959 fps; across all powders the maximum-charge window runs from 1,667 fps to 2,959 fps. Accurate 3100 gives the best case fill at 100 %, and 121 of the 121 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (500 MPa), the top charges use 50–90 %, leaving at least 10 % headroom. The 160.0 gr projectile in 0.277" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, 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. ReloadSwiss RS 70, Hodgdon Superformance, Ramshot Hunter rank at the top here: for .270 Win. Ackley Improved with the .277 | 160gr | 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.