Load Specifications
Bullet Manufacturer:Frontier Bullets
Bullet Weight:140 gr
Bullet Diameter:0.276"
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:1:9.5
Load data in caliber .270 Win. Ackley Improved with .276 | 140gr | Frontier PH HPBT bullet and 121 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, Alliant Reloder-17 and ReloadSwiss RS 60.
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% | 62,395 psi | 86% | 2831 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 64,948 psi | 90% | 2913 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 62,294 psi | 86% | 2861 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 63,875 psi | 88% | 2933 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 64,208 psi | 89% | 2943 fps | 99.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 49,516 psi | 68% | 2808 fps | 98.7% |
| Accurate 4064 | <<locked>> | 90% | 62,337 psi | 86% | 2917 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 63,846 psi | 88% | 3035 fps | 100% |
| Accurate High Countryᴾ | <<locked>> | 100% | 53,867 psi | 74% | 2999 fps | 96.5% |
| ADI APS 450 | <<locked>> | 86% | 64,194 psi | 89% | 2264 fps | 100% |
| ADI AR 2206H | <<locked>> | 88% | 65,543 psi | 90% | 3005 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 62,584 psi | 86% | 2953 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 56,782 psi | 78% | 2963 fps | 97.8% |
| ADI Benchmark 8208 | <<locked>> | 86% | 64,179 psi | 89% | 2946 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 62,308 psi | 86% | 2861 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 62,540 psi | 86% | 3091 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 56,637 psi | 78% | 2956 fps | 97.8% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 56,637 psi | 78% | 2956 fps | 97.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 63,425 psi | 87% | 2976 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 65,151 psi | 90% | 2871 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 63,904 psi | 88% | 3002 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 63,817 psi | 88% | 3084 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 61,946 psi | 85% | 3064 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 55,796 psi | 77% | 2946 fps | 97.7% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 49,284 psi | 68% | 2884 fps | 96.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 46,572 psi | 64% | 2831 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,770 psi | 56% | 2740 fps | 97.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 52,997 psi | 73% | 3018 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 62,091 psi | 86% | 2976 fps | 100% |
| Bofors RP3 | <<locked>> | 92% | 64,832 psi | 89% | 2995 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 49,284 psi | 68% | 2884 fps | 96.6% |
| Bofors RP7 | <<locked>> | 96% | 63,875 psi | 88% | 2979 fps | 99.3% |
| Hodgdon Benchmark | <<locked>> | 86% | 65,195 psi | 90% | 2917 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 64,426 psi | 89% | 2979 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 63,179 psi | 87% | 3045 fps | 100% |
| Hodgdon H322 | <<locked>> | 82% | 65,093 psi | 90% | 2927 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 65,601 psi | 90% | 3018 fps | 100% |
| Hodgdon H414 | <<locked>> | 96% | 61,743 psi | 85% | 3028 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 94% | 61,815 psi | 85% | 2992 fps | 98.8% |
| Hodgdon H4895 | <<locked>> | 86% | 62,410 psi | 86% | 2963 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 60,118 psi | 83% | 2946 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 62,743 psi | 87% | 2999 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 62,917 psi | 87% | 3081 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,056 psi | 50% | 1772 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 63,396 psi | 87% | 2959 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 62,946 psi | 87% | 2933 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 62,120 psi | 86% | 2936 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 90% | 65,499 psi | 90% | 2976 fps | 99.7% |
| IMR 4198 | <<locked>> | 82% | 64,165 psi | 88% | 2822 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 64,832 psi | 89% | 3012 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 94% | 61,975 psi | 85% | 2956 fps | 99.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 63,570 psi | 88% | 3015 fps | 100% |
| IMR 4895 | <<locked>> | 90% | 65,543 psi | 90% | 3028 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 56,333 psi | 78% | 2887 fps | 96% |
| IMR 8208 XBR | <<locked>> | 86% | 64,179 psi | 89% | 2946 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 65,137 psi | 90% | 2933 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 62,540 psi | 86% | 2927 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 64,223 psi | 89% | 2923 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 62,439 psi | 86% | 2930 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 65,325 psi | 90% | 2995 fps | 100% |
| Lovex S070 | <<locked>> | 98% | 62,990 psi | 87% | 2989 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 41,046 psi | 57% | 2657 fps | 97% |
| Norma 201 | <<locked>> | 88% | 63,918 psi | 88% | 2940 fps | 100% |
| Norma 202 | <<locked>> | 88% | 64,875 psi | 89% | 2936 fps | 100% |
| Norma 203B | <<locked>> | 90% | 63,048 psi | 87% | 2986 fps | 100% |
| Norma 204 | <<locked>> | 98% | 62,410 psi | 86% | 3022 fps | 98.4% |
| Norma MRPᴾ | <<locked>> | 100% | 52,083 psi | 72% | 2969 fps | 98.5% |
| Norma URP | <<locked>> | 98% | 61,525 psi | 85% | 3012 fps | 100% |
| Ramshot Big Game | <<locked>> | 90% | 64,411 psi | 89% | 3015 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 64,527 psi | 89% | 3071 fps | 99.9% |
| Ramshot TAC | <<locked>> | 86% | 64,730 psi | 89% | 2986 fps | 100% |
| Ramshot Wild Boar | <<locked>> | 86% | 64,832 psi | 89% | 2995 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 84% | 64,905 psi | 90% | 2949 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,753 psi | 51% | 1814 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 63,280 psi | 87% | 2917 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 65,601 psi | 90% | 3005 fps | 99.9% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 61,627 psi | 85% | 3028 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 61,380 psi | 85% | 3054 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 63,411 psi | 87% | 3058 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 62,236 psi | 86% | 3091 fps | 100% |
| Rottweil R 901 | <<locked>> | 86% | 64,440 psi | 89% | 2910 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 64,542 psi | 89% | 2936 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 64,672 psi | 89% | 2986 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 58,595 psi | 81% | 2930 fps | 97% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 54,998 psi | 76% | 2933 fps | 97.7% |
| Rottweil R 907 | <<locked>> | 96% | 63,875 psi | 88% | 2979 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 98% | 65,325 psi | 90% | 2995 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 86% | 62,540 psi | 86% | 2927 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 62,439 psi | 86% | 2930 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 62,990 psi | 87% | 2989 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 62,772 psi | 87% | 3002 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 63,643 psi | 88% | 2966 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 63,889 psi | 88% | 2976 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 65,079 psi | 90% | 2864 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 61,859 psi | 85% | 2818 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 61,888 psi | 85% | 2904 fps | 99.4% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 54,505 psi | 75% | 2930 fps | 97.6% |
| Somchem S321 | <<locked>> | 82% | 61,844 psi | 85% | 2927 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 64,353 psi | 89% | 2861 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 63,237 psi | 87% | 2949 fps | 100% |
| Somchem S355 | <<locked>> | 94% | 64,252 psi | 89% | 2979 fps | 100% |
| Somchem S361ᴾ | <<locked>> | 100% | 60,872 psi | 84% | 2927 fps | 96.5% |
| Somchem S365ᴾ | <<locked>> | 100% | 60,800 psi | 84% | 3012 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 55,593 psi | 77% | 2907 fps | 98.4% |
| Vihtavuori N130 | <<locked>> | 84% | 64,469 psi | 89% | 2818 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 65,354 psi | 90% | 2841 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 65,035 psi | 90% | 2894 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 65,557 psi | 90% | 2910 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 62,163 psi | 86% | 2904 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 64,556 psi | 89% | 3009 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 47,964 psi | 66% | 2769 fps | 96.7% |
| Vihtavuori N530 | <<locked>> | 86% | 65,035 psi | 90% | 2949 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 63,382 psi | 87% | 2910 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 63,411 psi | 87% | 3015 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 52,025 psi | 72% | 2910 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 64,817 psi | 89% | 2976 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 61,815 psi | 85% | 2949 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 62,120 psi | 86% | 3035 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,800 psi | 58% | 2871 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 88% | 64,440 psi | 89% | 2986 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 52,243 psi | 72% | 2848 fps | 96.9% |
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% | 55,085 psi | 76% | 2736 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 60,742 psi | 84% | 2861 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 48,196 psi | 66% | 2677 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 55,796 psi | 77% | 2831 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,296 psi | 64% | 2664 fps | 96.4% |
| Accurate 3100 | <<locked>> | 90% | 35,085 psi | 48% | 2526 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 45,643 psi | 63% | 2680 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,316 psi | 47% | 2526 fps | 96.7% |
| Accurate High Country | <<locked>> | 98% | 50,401 psi | 70% | 2940 fps | 95.7% |
| ADI APS 450 | <<locked>> | 80% | 58,334 psi | 80% | 2185 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 51,155 psi | 71% | 2799 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 43,540 psi | 60% | 2651 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 94% | 46,630 psi | 64% | 2785 fps | 95.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 53,214 psi | 73% | 2799 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 54,708 psi | 75% | 2769 fps | 100% |
| Alliant Power Pro 2000-MR | 48.1 gr | 80% | 47,297 psi | 65% | 2851 fps | 99.7% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 46,659 psi | 64% | 2785 fps | 95.6% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 46,659 psi | 64% | 2785 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,526 psi | 60% | 2671 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 80% | 61,235 psi | 84% | 2825 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,746 psi | 64% | 2740 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 33,895 psi | 47% | 2533 fps | 96.7% |
| Alliant Reloder-17 | 47.4 gr | 80% | 38,130 psi | 53% | 2661 fps | 99.3% |
| Alliant Reloder-19 | <<locked>> | 94% | 46,064 psi | 64% | 2776 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 98% | 46,238 psi | 64% | 2828 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 84% | 27,992 psi | 39% | 2395 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 96% | 35,839 psi | 49% | 2618 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 86% | 32,053 psi | 44% | 2562 fps | 95% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,676 psi | 70% | 2808 fps | 99.8% |
| Bofors RP3 | <<locked>> | 80% | 43,801 psi | 60% | 2684 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 46,238 psi | 64% | 2828 fps | 95.8% |
| Bofors RP7 | <<locked>> | 82% | 41,452 psi | 57% | 2605 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 54,534 psi | 75% | 2776 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 52,779 psi | 73% | 2825 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 59,016 psi | 81% | 2989 fps | 100% |
| Hodgdon H322 | <<locked>> | 80% | 60,814 psi | 84% | 2877 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 44,324 psi | 61% | 2690 fps | 98.7% |
| Hodgdon H414 | <<locked>> | 82% | 38,827 psi | 54% | 2628 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 84% | 44,962 psi | 62% | 2710 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 51,692 psi | 71% | 2805 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,357 psi | 43% | 2434 fps | 97.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 48,109 psi | 66% | 2789 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 40,756 psi | 56% | 2697 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,905 psi | 37% | 1581 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,298 psi | 68% | 2753 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 52,156 psi | 72% | 2789 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,759 psi | 63% | 2684 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,906 psi | 66% | 2707 fps | 97.6% |
| IMR 4198 | <<locked>> | 80% | 60,626 psi | 84% | 2776 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 41,814 psi | 58% | 2635 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,118 psi | 55% | 2575 fps | 95.4% |
| IMR 4831 | <<locked>> | 80% | 33,170 psi | 46% | 2480 fps | 96.3% |
| IMR 4895 | <<locked>> | 80% | 47,892 psi | 66% | 2769 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 98% | 52,982 psi | 73% | 2835 fps | 95.2% |
| IMR 8208 XBR | <<locked>> | 80% | 53,214 psi | 73% | 2799 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 60,945 psi | 84% | 2881 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 51,227 psi | 71% | 2776 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,459 psi | 70% | 2726 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 45,934 psi | 63% | 2684 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,782 psi | 52% | 2530 fps | 96.3% |
| Lovex S070 | <<locked>> | 82% | 38,319 psi | 53% | 2562 fps | 95.2% |
| Lovex S071 | <<locked>> | 96% | 36,143 psi | 50% | 2549 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 49,995 psi | 69% | 2743 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,401 psi | 70% | 2740 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,093 psi | 64% | 2726 fps | 99.8% |
| Norma 204 | <<locked>> | 90% | 47,456 psi | 65% | 2782 fps | 95.7% |
| Norma MRP | <<locked>> | 92% | 39,639 psi | 55% | 2720 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 34,374 psi | 47% | 2523 fps | 96.5% |
| Ramshot Big Game | <<locked>> | 80% | 45,977 psi | 63% | 2743 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 82% | 35,563 psi | 49% | 2559 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 53,098 psi | 73% | 2815 fps | 99.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 53,229 psi | 73% | 2835 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 80% | 57,101 psi | 79% | 2844 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,383 psi | 38% | 1621 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 59,524 psi | 82% | 2871 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,382 psi | 61% | 2671 fps | 97.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 50,227 psi | 69% | 2858 fps | 99.9% |
| ReloadSwiss RS 60 | 47.4 gr | 80% | 40,524 psi | 56% | 2723 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,866 psi | 47% | 2536 fps | 96.1% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 33,359 psi | 46% | 2536 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 54,041 psi | 75% | 2772 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 47,732 psi | 66% | 2697 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,205 psi | 57% | 2628 fps | 99.6% |
| Rottweil R 904 | <<locked>> | 96% | 51,634 psi | 71% | 2822 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 94% | 44,962 psi | 62% | 2759 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 82% | 41,452 psi | 57% | 2605 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,782 psi | 52% | 2530 fps | 96.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 51,227 psi | 71% | 2776 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,934 psi | 63% | 2684 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 38,319 psi | 53% | 2562 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,279 psi | 58% | 2680 fps | 99.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,996 psi | 72% | 2799 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,676 psi | 69% | 2769 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,879 psi | 70% | 2680 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,815 psi | 59% | 2549 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 39,421 psi | 54% | 2526 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 44,541 psi | 61% | 2753 fps | 95.3% |
| Somchem S321 | <<locked>> | 80% | 57,914 psi | 80% | 2877 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 50,691 psi | 70% | 2680 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 51,547 psi | 71% | 2785 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 41,655 psi | 57% | 2628 fps | 99.6% |
| Somchem S361 | <<locked>> | 96% | 53,258 psi | 73% | 2812 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 30,806 psi | 42% | 2477 fps | 98.6% |
| Somchem S385 | <<locked>> | 92% | 42,714 psi | 59% | 2684 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 57,043 psi | 79% | 2726 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 51,372 psi | 71% | 2667 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,587 psi | 66% | 2664 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,964 psi | 66% | 2677 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,740 psi | 55% | 2562 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 35,737 psi | 49% | 2526 fps | 96.9% |
| Vihtavuori N165 | <<locked>> | 96% | 41,945 psi | 58% | 2657 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 53,577 psi | 74% | 2795 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 46,369 psi | 64% | 2671 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,288 psi | 49% | 2526 fps | 96.6% |
| Vihtavuori N555 | <<locked>> | 84% | 30,574 psi | 42% | 2470 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,056 psi | 48% | 2497 fps | 98.8% |
| Winchester 748 | <<locked>> | 80% | 53,998 psi | 74% | 2844 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 39,073 psi | 54% | 2635 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 86% | 26,484 psi | 37% | 2418 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 49,313 psi | 68% | 2772 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 45,498 psi | 63% | 2730 fps | 95.2% |
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 .276 | 140gr | Frontier PH HPBT. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,091 fps; across all powders the maximum-charge window runs from 1,772 fps to 3,091 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 140.0 gr projectile in 0.276" calls for a 1:9.5 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. Alliant Power Pro 2000-MR, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for .270 Win. Ackley Improved with the .276 | 140gr | Frontier PH HPBT 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.