Load Specifications
Bullet Manufacturer:Remington
Bullet Weight:150 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:1:12.5
Load data in caliber .270 Win. Ackley Improved with .277 | 150gr | Remington SP Core-Lokt bullet and 120 powders. The key underlying parameters are shown in the table above.
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% | 63,686 psi | 88% | 2759 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 64,252 psi | 89% | 2799 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 61,772 psi | 85% | 2841 fps | 99.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 55,912 psi | 77% | 2831 fps | 99.9% |
| Accurate 4064 | <<locked>> | 88% | 64,687 psi | 89% | 2854 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 62,366 psi | 86% | 2933 fps | 100% |
| Accurate High Countryᴾ | <<locked>> | 100% | 61,409 psi | 85% | 3038 fps | 98.7% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 58,465 psi | 81% | 2982 fps | 97.1% |
| ADI APS 450 | <<locked>> | 86% | 64,556 psi | 89% | 2221 fps | 100% |
| ADI AR 2206H | <<locked>> | 84% | 63,251 psi | 87% | 2890 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 64,411 psi | 89% | 2897 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 62,990 psi | 87% | 2979 fps | 99.4% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 56,681 psi | 78% | 2923 fps | 97.7% |
| ADI Benchmark 8208 | <<locked>> | 84% | 65,528 psi | 90% | 2881 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 64,092 psi | 88% | 2789 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 65,311 psi | 90% | 3035 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 61,641 psi | 85% | 2867 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 62,033 psi | 86% | 2894 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 62,700 psi | 86% | 2982 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 65,079 psi | 90% | 3012 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 62,018 psi | 86% | 2966 fps | 99.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 55,738 psi | 77% | 2920 fps | 98.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 52,504 psi | 72% | 2844 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 45,672 psi | 63% | 2779 fps | 99.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 61,264 psi | 84% | 3048 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 63,788 psi | 88% | 2917 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 51,024 psi | 70% | 2841 fps | 97.9% |
| Bofors RP3 | <<locked>> | 88% | 62,990 psi | 87% | 2887 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 55,738 psi | 77% | 2920 fps | 98.8% |
| Bofors RP7 | <<locked>> | 92% | 61,815 psi | 85% | 2881 fps | 99.7% |
| Hodgdon Benchmark | <<locked>> | 82% | 62,685 psi | 86% | 2805 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 62,265 psi | 86% | 2867 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 63,382 psi | 87% | 2913 fps | 100% |
| Hodgdon H414 | <<locked>> | 94% | 64,295 psi | 89% | 2986 fps | 100% |
| Hodgdon H4350 | <<locked>> | 92% | 63,730 psi | 88% | 2943 fps | 99.5% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 60,930 psi | 84% | 2923 fps | 97.7% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 59,567 psi | 82% | 2907 fps | 97.5% |
| Hodgdon H4895 | <<locked>> | 84% | 63,991 psi | 88% | 2900 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 63,193 psi | 87% | 2900 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 64,846 psi | 89% | 2940 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 44,875 psi | 62% | 2815 fps | 97.3% |
| Hodgdon Superformance | <<locked>> | 92% | 61,105 psi | 84% | 2976 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,492 psi | 50% | 1736 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 65,021 psi | 90% | 2897 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 65,050 psi | 90% | 2864 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 63,773 psi | 88% | 2877 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 62,975 psi | 87% | 2871 fps | 99.9% |
| IMR 4350 | <<locked>> | 96% | 63,077 psi | 87% | 2913 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 92% | 63,570 psi | 88% | 2907 fps | 99.9% |
| IMR 4831 | <<locked>> | 96% | 62,323 psi | 86% | 2917 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 63,686 psi | 88% | 2920 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 61,917 psi | 85% | 2907 fps | 98% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 53,998 psi | 74% | 2894 fps | 97.3% |
| IMR 8208 XBR | <<locked>> | 84% | 65,528 psi | 90% | 2881 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 64,310 psi | 89% | 2861 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 65,267 psi | 90% | 2858 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 63,947 psi | 88% | 2867 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 63,701 psi | 88% | 2897 fps | 100% |
| Lovex S070 | <<locked>> | 96% | 65,137 psi | 90% | 2943 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 46,557 psi | 64% | 2684 fps | 99% |
| Norma 201 | <<locked>> | 86% | 65,354 psi | 90% | 2874 fps | 100% |
| Norma 202 | <<locked>> | 84% | 62,613 psi | 86% | 2822 fps | 100% |
| Norma 203B | <<locked>> | 88% | 64,948 psi | 90% | 2927 fps | 100% |
| Norma 204 | <<locked>> | 96% | 64,513 psi | 89% | 2976 fps | 99.4% |
| Norma MRPᴾ | <<locked>> | 100% | 59,321 psi | 82% | 3002 fps | 99.8% |
| Norma URP | <<locked>> | 96% | 64,179 psi | 89% | 2963 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 62,555 psi | 86% | 2910 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 54,505 psi | 75% | 2910 fps | 97.7% |
| Ramshot Hunter | <<locked>> | 96% | 63,121 psi | 87% | 2972 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 48,631 psi | 67% | 2785 fps | 98.2% |
| Ramshot TAC | <<locked>> | 82% | 61,815 psi | 85% | 2871 fps | 100% |
| Ramshot Wild Boar | <<locked>> | 82% | 62,134 psi | 86% | 2877 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,231 psi | 51% | 1778 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 62,917 psi | 87% | 2894 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 63,715 psi | 88% | 2969 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 64,310 psi | 89% | 2995 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 62,033 psi | 86% | 2956 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 65,050 psi | 90% | 3045 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 44,628 psi | 62% | 2805 fps | 98.3% |
| Rottweil R 901 | <<locked>> | 82% | 62,381 psi | 86% | 2799 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 62,207 psi | 86% | 2828 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 62,801 psi | 87% | 2881 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 64,672 psi | 89% | 2946 fps | 98.8% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 61,583 psi | 85% | 2956 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 92% | 61,815 psi | 85% | 2881 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 94% | 63,701 psi | 88% | 2897 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 84% | 64,310 psi | 89% | 2861 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 63,947 psi | 88% | 2867 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 65,137 psi | 90% | 2943 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 64,948 psi | 90% | 2946 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 65,224 psi | 90% | 2907 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 65,528 psi | 90% | 2913 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 62,410 psi | 86% | 2756 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 63,309 psi | 87% | 2753 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 63,628 psi | 88% | 2858 fps | 99.9% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 61,076 psi | 84% | 2953 fps | 99.3% |
| Somchem S335 | <<locked>> | 86% | 65,528 psi | 90% | 2792 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 64,934 psi | 90% | 2887 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 62,642 psi | 86% | 2877 fps | 100% |
| Somchem S361 | <<locked>> | 98% | 62,787 psi | 87% | 2887 fps | 97.9% |
| Somchem S365 | <<locked>> | 98% | 64,034 psi | 88% | 2959 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 62,236 psi | 86% | 2927 fps | 99.7% |
| Vihtavuori N130 | <<locked>> | 82% | 65,441 psi | 90% | 2746 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 62,874 psi | 87% | 2733 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 62,946 psi | 87% | 2782 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 63,150 psi | 87% | 2799 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 64,165 psi | 88% | 2848 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 62,801 psi | 87% | 2907 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 53,751 psi | 74% | 2795 fps | 98.7% |
| Vihtavuori N530 | <<locked>> | 82% | 62,149 psi | 86% | 2831 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 65,238 psi | 90% | 2848 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 61,699 psi | 85% | 2910 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 58,958 psi | 81% | 2923 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 59,466 psi | 82% | 2992 fps | 97.9% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 62,627 psi | 86% | 2871 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 63,570 psi | 88% | 2884 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 64,600 psi | 89% | 2989 fps | 100% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 48,080 psi | 66% | 2913 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 62,105 psi | 86% | 2874 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 58,639 psi | 81% | 2874 fps | 98.9% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 59,712 psi | 82% | 2713 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 53,316 psi | 74% | 2664 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 50,792 psi | 70% | 2677 fps | 98.4% |
| Accurate 3100 | <<locked>> | 84% | 32,634 psi | 45% | 2398 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 50,531 psi | 70% | 2671 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,653 psi | 53% | 2549 fps | 98.7% |
| Accurate High Country | <<locked>> | 92% | 46,543 psi | 64% | 2792 fps | 95.8% |
| Accurate MAGPRO | <<locked>> | 96% | 50,459 psi | 70% | 2848 fps | 95.4% |
| ADI APS 450 | <<locked>> | 80% | 58,610 psi | 81% | 2142 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 55,753 psi | 77% | 2789 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 47,340 psi | 65% | 2648 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 42,699 psi | 59% | 2644 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 94% | 46,369 psi | 64% | 2740 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 57,812 psi | 80% | 2782 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 60,278 psi | 83% | 2746 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 52,736 psi | 73% | 2864 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,935 psi | 66% | 2671 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,227 psi | 71% | 2740 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,579 psi | 52% | 2559 fps | 98.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 42,598 psi | 59% | 2680 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 42,192 psi | 58% | 2635 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 90% | 39,885 psi | 55% | 2628 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,630 psi | 38% | 2320 fps | 96.8% |
| Alliant Reloder-25 | <<locked>> | 88% | 31,343 psi | 43% | 2438 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 80% | 29,530 psi | 41% | 2428 fps | 95.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 55,680 psi | 77% | 2808 fps | 100% |
| Bofors RP15 | <<locked>> | 94% | 42,032 psi | 58% | 2674 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 48,428 psi | 67% | 2684 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 39,885 psi | 55% | 2628 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 42,467 psi | 59% | 2559 fps | 96.8% |
| Hodgdon Benchmark | <<locked>> | 80% | 58,900 psi | 81% | 2759 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 58,131 psi | 80% | 2815 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 48,660 psi | 67% | 2697 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 80% | 40,466 psi | 56% | 2592 fps | 96.9% |
| Hodgdon H4350 | <<locked>> | 80% | 43,410 psi | 60% | 2612 fps | 96.3% |
| Hodgdon H4831 | <<locked>> | 94% | 49,719 psi | 69% | 2753 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 94% | 48,617 psi | 67% | 2733 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 56,376 psi | 78% | 2799 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,201 psi | 49% | 2454 fps | 99.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 53,185 psi | 73% | 2785 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 39,421 psi | 54% | 2687 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 39,378 psi | 54% | 2602 fps | 96.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,253 psi | 38% | 1549 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 54,012 psi | 74% | 2749 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 57,246 psi | 79% | 2772 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,821 psi | 69% | 2680 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 52,127 psi | 72% | 2713 fps | 99.1% |
| IMR 4350 | <<locked>> | 80% | 38,058 psi | 52% | 2487 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,816 psi | 60% | 2589 fps | 97.6% |
| IMR 4831 | <<locked>> | 80% | 37,130 psi | 51% | 2500 fps | 98.5% |
| IMR 4895 | <<locked>> | 80% | 52,547 psi | 72% | 2766 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 48,269 psi | 67% | 2690 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 96% | 47,224 psi | 65% | 2772 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 80% | 57,812 psi | 80% | 2782 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 56,202 psi | 78% | 2762 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 54,375 psi | 75% | 2713 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 50,096 psi | 69% | 2677 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,524 psi | 57% | 2543 fps | 98.3% |
| Lovex S070 | <<locked>> | 80% | 39,755 psi | 55% | 2526 fps | 96.9% |
| Lovex S071 | <<locked>> | 90% | 33,794 psi | 47% | 2428 fps | 95.8% |
| Norma 201 | <<locked>> | 80% | 54,563 psi | 75% | 2733 fps | 100% |
| Norma 202 | <<locked>> | 80% | 55,100 psi | 76% | 2726 fps | 100% |
| Norma 203B | <<locked>> | 80% | 50,575 psi | 70% | 2726 fps | 100% |
| Norma 204 | <<locked>> | 84% | 43,105 psi | 59% | 2631 fps | 95.7% |
| Norma MRP | <<locked>> | 86% | 36,564 psi | 50% | 2582 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 38,421 psi | 53% | 2543 fps | 98.6% |
| Ramshot Big Game | <<locked>> | 80% | 51,068 psi | 70% | 2749 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 43,932 psi | 61% | 2720 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 37,086 psi | 51% | 2526 fps | 96.8% |
| Ramshot Magnum | <<locked>> | 94% | 39,204 psi | 54% | 2602 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 57,870 psi | 80% | 2815 fps | 100% |
| Ramshot Wild Boar | <<locked>> | 80% | 58,044 psi | 80% | 2825 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,760 psi | 38% | 1588 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,660 psi | 67% | 2680 fps | 99% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 55,521 psi | 77% | 2854 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,252 psi | 62% | 2730 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,493 psi | 53% | 2569 fps | 98.5% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,217 psi | 51% | 2572 fps | 97.9% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 36,201 psi | 50% | 2602 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 58,581 psi | 81% | 2753 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 51,938 psi | 72% | 2687 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,672 psi | 63% | 2631 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 47,166 psi | 65% | 2677 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 88% | 41,292 psi | 57% | 2615 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 42,467 psi | 59% | 2559 fps | 96.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,524 psi | 57% | 2543 fps | 98.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 56,202 psi | 78% | 2762 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 50,096 psi | 69% | 2677 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,755 psi | 55% | 2526 fps | 96.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,644 psi | 64% | 2684 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 57,087 psi | 79% | 2799 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 54,056 psi | 75% | 2759 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 55,027 psi | 76% | 2661 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,644 psi | 64% | 2533 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,553 psi | 56% | 2487 fps | 96.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 40,915 psi | 56% | 2612 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 54,984 psi | 76% | 2664 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 56,637 psi | 78% | 2782 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 45,934 psi | 63% | 2631 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 48,283 psi | 67% | 2667 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 34,766 psi | 48% | 2500 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 36,883 psi | 51% | 2493 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 61,424 psi | 85% | 2700 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 55,637 psi | 77% | 2644 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 52,228 psi | 72% | 2648 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 52,431 psi | 72% | 2664 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,830 psi | 60% | 2562 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,784 psi | 55% | 2539 fps | 98.8% |
| Vihtavuori N165 | <<locked>> | 90% | 38,725 psi | 53% | 2526 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 58,247 psi | 80% | 2779 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 50,546 psi | 70% | 2657 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,131 psi | 54% | 2539 fps | 98.6% |
| Vihtavuori N555 | <<locked>> | 80% | 30,589 psi | 42% | 2395 fps | 96.9% |
| Vihtavuori N560 | <<locked>> | 94% | 48,428 psi | 67% | 2808 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,798 psi | 54% | 2510 fps | 99.9% |
| Winchester 748 | <<locked>> | 80% | 59,306 psi | 82% | 2831 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 40,683 psi | 56% | 2598 fps | 97% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,337 psi | 34% | 2287 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 54,433 psi | 75% | 2772 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 41,321 psi | 57% | 2582 fps | 95.3% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 128 powders for .270 Win. Ackley Improved loaded with the .277 | 150gr | Remington SP Core-Lokt. Alliant Reloder-26 delivers the highest muzzle velocity at 3,048 fps; across all powders the maximum-charge window runs from 1,736 fps to 3,048 fps. Accurate 3100 gives the best case fill at 100 %, and 128 of the 128 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (500 MPa), the top charges use 44–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.277" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, Accurate MAGPRO 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. As outliers, ADI AR 2217, Baschieri & Pellagri 109, Bofors RP30 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.