Load Specifications
Bullet Manufacturer:Rhino Bullets
Bullet Weight:140 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 | 140gr | Rhino Solid Shank bullet and 123 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 ReloadSwiss RS 62.
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>> | 84% | 64,832 psi | 89% | 2871 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 65,412 psi | 90% | 2910 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 62,584 psi | 86% | 2933 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 62,932 psi | 87% | 2943 fps | 99.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 52,518 psi | 72% | 2867 fps | 99.3% |
| Accurate 4064 | <<locked>> | 90% | 65,296 psi | 90% | 2963 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 63,048 psi | 87% | 3035 fps | 100% |
| Accurate High Countryᴾ | <<locked>> | 100% | 57,537 psi | 79% | 3071 fps | 97.5% |
| ADI APS 450 | <<locked>> | 86% | 64,600 psi | 89% | 2293 fps | 100% |
| ADI AR 2206H | <<locked>> | 86% | 64,136 psi | 88% | 2999 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 65,383 psi | 90% | 3002 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 59,683 psi | 82% | 3022 fps | 98.5% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 53,650 psi | 74% | 2956 fps | 96.2% |
| ADI Benchmark 8208 | <<locked>> | 84% | 62,874 psi | 87% | 2946 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 65,021 psi | 90% | 2900 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 61,743 psi | 85% | 3091 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 59,567 psi | 82% | 3015 fps | 98.5% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 59,567 psi | 82% | 3015 fps | 98.5% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 59,567 psi | 82% | 3015 fps | 98.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 62,323 psi | 86% | 2972 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 62,758 psi | 87% | 3002 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 63,019 psi | 87% | 3087 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 65,586 psi | 90% | 3120 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 58,740 psi | 81% | 3005 fps | 98.4% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 52,359 psi | 72% | 2949 fps | 97.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 49,240 psi | 68% | 2887 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,033 psi | 59% | 2805 fps | 98.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 56,971 psi | 79% | 3087 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 64,817 psi | 89% | 3028 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 47,979 psi | 66% | 2871 fps | 96.4% |
| Bofors RP3 | <<locked>> | 90% | 63,933 psi | 88% | 2999 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 52,359 psi | 72% | 2949 fps | 97.6% |
| Bofors RP7 | <<locked>> | 94% | 62,627 psi | 86% | 2979 fps | 99.4% |
| Hodgdon Benchmark | <<locked>> | 84% | 63,831 psi | 88% | 2917 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 63,266 psi | 87% | 2979 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 64,469 psi | 89% | 3018 fps | 100% |
| Hodgdon H414 | <<locked>> | 96% | 65,006 psi | 90% | 3087 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 94% | 64,687 psi | 89% | 3048 fps | 99.2% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 57,638 psi | 79% | 2963 fps | 96.4% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 56,347 psi | 78% | 2943 fps | 96.1% |
| Hodgdon H4895 | <<locked>> | 86% | 64,875 psi | 89% | 3009 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 63,614 psi | 88% | 3002 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 61,685 psi | 85% | 2999 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 62,004 psi | 86% | 3081 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,434 psi | 50% | 1795 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 62,323 psi | 86% | 2959 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 62,018 psi | 86% | 2933 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 64,774 psi | 89% | 2986 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 64,034 psi | 88% | 2976 fps | 99.7% |
| IMR 4350 | <<locked>> | 98% | 63,672 psi | 88% | 3012 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 94% | 64,455 psi | 89% | 3009 fps | 99.7% |
| IMR 4831 | <<locked>> | 98% | 62,990 psi | 87% | 3022 fps | 100% |
| IMR 4895 | <<locked>> | 88% | 64,411 psi | 89% | 3028 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 58,987 psi | 81% | 2946 fps | 96.9% |
| IMR 8208 XBR | <<locked>> | 84% | 62,874 psi | 87% | 2946 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 65,369 psi | 90% | 2972 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 62,772 psi | 87% | 2923 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 65,195 psi | 90% | 2976 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 64,411 psi | 89% | 2999 fps | 100% |
| Lovex S070 | <<locked>> | 96% | 62,076 psi | 86% | 2992 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,685 psi | 60% | 2717 fps | 97.9% |
| Norma 201 | <<locked>> | 86% | 62,656 psi | 86% | 2940 fps | 100% |
| Norma 202 | <<locked>> | 86% | 63,527 psi | 88% | 2933 fps | 100% |
| Norma 203B | <<locked>> | 88% | 61,989 psi | 85% | 2986 fps | 100% |
| Norma 204 | <<locked>> | 98% | 65,383 psi | 90% | 3077 fps | 99% |
| Norma MRPᴾ | <<locked>> | 100% | 55,564 psi | 77% | 3038 fps | 99.2% |
| Norma URP | <<locked>> | 98% | 64,934 psi | 90% | 3068 fps | 100% |
| Ramshot Big Game | <<locked>> | 88% | 63,382 psi | 87% | 3015 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 51,227 psi | 71% | 2936 fps | 96.1% |
| Ramshot Hunter | <<locked>> | 98% | 63,744 psi | 88% | 3074 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 45,614 psi | 63% | 2808 fps | 96.6% |
| Ramshot TAC | <<locked>> | 84% | 62,990 psi | 87% | 2976 fps | 100% |
| Ramshot Wild Boar | <<locked>> | 84% | 63,512 psi | 88% | 2992 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 63,280 psi | 87% | 2946 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,883 psi | 51% | 1834 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 64,339 psi | 89% | 3005 fps | 99.9% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 64,600 psi | 89% | 3077 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 65,180 psi | 90% | 3110 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 62,816 psi | 87% | 3058 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 61,337 psi | 85% | 3094 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 41,901 psi | 58% | 2815 fps | 96.3% |
| Rottweil R 901 | <<locked>> | 84% | 63,454 psi | 88% | 2910 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 63,541 psi | 88% | 2940 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 63,788 psi | 88% | 2989 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 61,496 psi | 85% | 2992 fps | 97.8% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 58,131 psi | 80% | 2995 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 94% | 62,627 psi | 86% | 2979 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 96% | 64,411 psi | 89% | 2999 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 86% | 65,369 psi | 90% | 2972 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 65,195 psi | 90% | 2976 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 62,076 psi | 86% | 2992 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 61,438 psi | 85% | 2999 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 62,279 psi | 86% | 2963 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 62,700 psi | 86% | 2972 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 63,701 psi | 88% | 2864 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 64,411 psi | 89% | 2861 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 64,905 psi | 90% | 2959 fps | 99.8% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 57,624 psi | 79% | 2989 fps | 98.4% |
| Somchem S321 | <<locked>> | 82% | 64,759 psi | 89% | 2979 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 63,005 psi | 87% | 2858 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 61,670 psi | 85% | 2940 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 63,338 psi | 87% | 2982 fps | 100% |
| Somchem S361ᴾ | <<locked>> | 100% | 63,904 psi | 88% | 2989 fps | 97.4% |
| Somchem S365ᴾ | <<locked>> | 100% | 64,455 psi | 89% | 3064 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 58,842 psi | 81% | 2969 fps | 99.1% |
| Vihtavuori N130 | <<locked>> | 82% | 62,743 psi | 87% | 2812 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 64,092 psi | 88% | 2841 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 63,860 psi | 88% | 2890 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 64,368 psi | 89% | 2910 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 65,282 psi | 90% | 2956 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 63,599 psi | 88% | 3009 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 50,691 psi | 70% | 2828 fps | 97.6% |
| Vihtavuori N530 | <<locked>> | 84% | 63,512 psi | 88% | 2943 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 62,439 psi | 86% | 2910 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 62,453 psi | 86% | 3015 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 55,376 psi | 76% | 2969 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 55,927 psi | 77% | 3025 fps | 96.5% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 63,672 psi | 88% | 2976 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 64,672 psi | 89% | 2995 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 65,383 psi | 90% | 3094 fps | 99.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,672 psi | 62% | 2943 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 86% | 63,164 psi | 87% | 2982 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 55,317 psi | 76% | 2910 fps | 97.8% |
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% | 57,305 psi | 79% | 2779 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 50,720 psi | 70% | 2723 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 58,711 psi | 81% | 2881 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,298 psi | 67% | 2717 fps | 97.2% |
| Accurate 3100 | <<locked>> | 88% | 34,896 psi | 48% | 2530 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 48,037 psi | 66% | 2726 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,361 psi | 50% | 2582 fps | 97.5% |
| Accurate High Country | <<locked>> | 94% | 46,630 psi | 64% | 2881 fps | 95% |
| ADI APS 450 | <<locked>> | 80% | 58,320 psi | 80% | 2208 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 53,345 psi | 74% | 2848 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 45,324 psi | 63% | 2697 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 92% | 45,963 psi | 63% | 2789 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 98% | 50,154 psi | 69% | 2890 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 55,390 psi | 76% | 2841 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 57,145 psi | 79% | 2808 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 49,908 psi | 69% | 2910 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 46,064 psi | 64% | 2789 fps | 95.8% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 46,064 psi | 64% | 2789 fps | 95.8% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 46,064 psi | 64% | 2789 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,687 psi | 63% | 2720 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,892 psi | 67% | 2789 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 35,476 psi | 49% | 2589 fps | 97.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,190 psi | 55% | 2717 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 92% | 45,513 psi | 63% | 2779 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 94% | 42,873 psi | 59% | 2769 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 82% | 27,731 psi | 38% | 2395 fps | 95.9% |
| Alliant Reloder-25 | <<locked>> | 92% | 33,460 psi | 46% | 2569 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 84% | 31,792 psi | 44% | 2566 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 53,113 psi | 73% | 2861 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 44,889 psi | 62% | 2812 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 45,963 psi | 63% | 2733 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 42,873 psi | 59% | 2769 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 40,538 psi | 56% | 2598 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 56,695 psi | 78% | 2822 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 55,434 psi | 76% | 2874 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 46,340 psi | 64% | 2740 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 80% | 38,290 psi | 53% | 2625 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 82% | 44,092 psi | 61% | 2707 fps | 95.7% |
| Hodgdon H4831 | <<locked>> | 98% | 53,853 psi | 74% | 2900 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 98% | 52,634 psi | 73% | 2881 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 53,925 psi | 74% | 2854 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,996 psi | 46% | 2484 fps | 98.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,531 psi | 70% | 2838 fps | 100% |
| Hodgdon Superformance | 53.8 gr | 82% | 39,929 psi | 55% | 2690 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,209 psi | 38% | 1604 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,430 psi | 71% | 2802 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 54,563 psi | 75% | 2835 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,630 psi | 66% | 2730 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,792 psi | 69% | 2756 fps | 98.2% |
| IMR 4350 | <<locked>> | 84% | 41,220 psi | 57% | 2635 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,916 psi | 58% | 2631 fps | 96.3% |
| IMR 4831 | <<locked>> | 80% | 35,056 psi | 48% | 2536 fps | 97.2% |
| IMR 4895 | <<locked>> | 80% | 50,111 psi | 69% | 2818 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 52,170 psi | 72% | 2838 fps | 95.4% |
| IMR 8208 XBR | <<locked>> | 80% | 55,390 psi | 76% | 2841 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 53,505 psi | 74% | 2818 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 52,272 psi | 72% | 2772 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 47,892 psi | 66% | 2730 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,610 psi | 55% | 2582 fps | 97.1% |
| Lovex S070 | <<locked>> | 80% | 37,782 psi | 52% | 2559 fps | 95.4% |
| Lovex S071 | <<locked>> | 94% | 36,129 psi | 50% | 2559 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 52,286 psi | 72% | 2792 fps | 100% |
| Norma 202 | <<locked>> | 80% | 52,721 psi | 73% | 2785 fps | 100% |
| Norma 203B | <<locked>> | 80% | 48,240 psi | 67% | 2776 fps | 100% |
| Norma 204 | <<locked>> | 88% | 46,615 psi | 64% | 2779 fps | 95.8% |
| Norma MRP | <<locked>> | 90% | 39,247 psi | 54% | 2723 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 36,289 psi | 50% | 2579 fps | 97.4% |
| Ramshot Big Game | <<locked>> | 80% | 48,515 psi | 67% | 2799 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 47,761 psi | 66% | 2871 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 35,085 psi | 48% | 2556 fps | 95.1% |
| Ramshot Magnum | <<locked>> | 98% | 42,540 psi | 59% | 2746 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 55,448 psi | 76% | 2867 fps | 99.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 55,477 psi | 77% | 2881 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 80% | 59,538 psi | 82% | 2897 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,673 psi | 38% | 1644 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,456 psi | 64% | 2723 fps | 98.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 52,605 psi | 73% | 2907 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 42,699 psi | 59% | 2776 fps | 100% |
| ReloadSwiss RS 62 | 49.7 gr | 80% | 36,143 psi | 50% | 2598 fps | 97.1% |
| ReloadSwiss RS 70 | 50.5 gr | 80% | 35,201 psi | 49% | 2598 fps | 96.3% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 39,218 psi | 54% | 2746 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 56,231 psi | 78% | 2815 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 49,719 psi | 69% | 2743 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,381 psi | 60% | 2680 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 94% | 50,821 psi | 70% | 2822 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 92% | 44,570 psi | 61% | 2762 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 40,538 psi | 56% | 2598 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,610 psi | 55% | 2582 fps | 97.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 53,505 psi | 74% | 2818 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 47,892 psi | 66% | 2730 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 37,782 psi | 52% | 2559 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,295 psi | 61% | 2730 fps | 99.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 54,215 psi | 75% | 2848 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,677 psi | 71% | 2815 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,895 psi | 73% | 2723 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,701 psi | 62% | 2592 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,696 psi | 53% | 2526 fps | 95.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 44,150 psi | 61% | 2759 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 60,524 psi | 83% | 2923 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 52,808 psi | 73% | 2723 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 54,027 psi | 75% | 2835 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,729 psi | 60% | 2680 fps | 99.9% |
| Somchem S361 | <<locked>> | 94% | 52,272 psi | 72% | 2815 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 32,619 psi | 45% | 2530 fps | 99.2% |
| Somchem S385 | <<locked>> | 88% | 39,726 psi | 55% | 2635 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 59,205 psi | 82% | 2769 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 53,417 psi | 74% | 2707 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 49,821 psi | 69% | 2707 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 50,140 psi | 69% | 2723 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,727 psi | 58% | 2608 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 37,652 psi | 52% | 2579 fps | 97.7% |
| Vihtavuori N165 | <<locked>> | 94% | 41,669 psi | 57% | 2664 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 55,811 psi | 77% | 2841 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 48,312 psi | 67% | 2713 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,072 psi | 51% | 2575 fps | 97.4% |
| Vihtavuori N555 | <<locked>> | 80% | 28,572 psi | 39% | 2418 fps | 95.1% |
| Vihtavuori N560 | <<locked>> | 98% | 52,359 psi | 72% | 2963 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,825 psi | 51% | 2546 fps | 99.3% |
| Winchester 748 | <<locked>> | 80% | 56,536 psi | 78% | 2890 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 38,479 psi | 53% | 2631 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 84% | 26,194 psi | 36% | 2418 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,880 psi | 72% | 2825 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 44,657 psi | 62% | 2726 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 123 powders for .270 Win. Ackley Improved loaded with the .277 | 140gr | Rhino Solid Shank. Alliant Reloder-17 delivers the highest muzzle velocity at 3,120 fps; across all powders the maximum-charge window runs from 1,795 fps to 3,120 fps. Accurate 3100 gives the best case fill at 100 %, and 123 of the 123 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 140.0 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, 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, ReloadSwiss RS 62 rank at the top here: for .270 Win. Ackley Improved with the .277 | 140gr | Rhino Solid Shank 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.