Load Specifications
Bullet Manufacturer:Reichenberg
Bullet Weight:130 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:1:11.0
Load data in caliber .270 Win. Ackley Improved with .277 | 130gr | Reichenberg HDB Universal bullet and 117 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, Hodgdon Superformance and Alliant Reloder-17.
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>> | 86% | 65,122 psi | 90% | 2979 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 64,107 psi | 88% | 3022 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 65,253 psi | 90% | 3015 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 62,816 psi | 87% | 3038 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 63,469 psi | 88% | 3041 fps | 98.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 48,573 psi | 67% | 2894 fps | 98.1% |
| Accurate 4064 | <<locked>> | 92% | 65,340 psi | 90% | 3071 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 62,584 psi | 86% | 3133 fps | 100% |
| ADI APS 450 | <<locked>> | 86% | 64,397 psi | 89% | 2369 fps | 100% |
| ADI AR 2206H | <<locked>> | 88% | 64,571 psi | 89% | 3110 fps | 100% |
| ADI AR 2208 | <<locked>> | 94% | 65,601 psi | 90% | 3107 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 55,985 psi | 77% | 3054 fps | 97.1% |
| ADI Benchmark 8208 | <<locked>> | 86% | 63,063 psi | 87% | 3048 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 65,282 psi | 90% | 3012 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 61,685 psi | 85% | 3196 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 55,753 psi | 77% | 3048 fps | 97.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 62,569 psi | 86% | 3077 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 64,339 psi | 89% | 2982 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 63,063 psi | 87% | 3107 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 62,613 psi | 86% | 3182 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 96% | 65,296 psi | 90% | 3225 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 54,926 psi | 76% | 3038 fps | 97% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 45,600 psi | 63% | 2920 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,089 psi | 55% | 2818 fps | 96.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 52,083 psi | 72% | 3110 fps | 99.7% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 65,427 psi | 90% | 3136 fps | 100% |
| Bofors RP3 | <<locked>> | 92% | 64,049 psi | 88% | 3104 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 63,106 psi | 87% | 3081 fps | 98.9% |
| Hodgdon Benchmark | <<locked>> | 86% | 64,527 psi | 89% | 3028 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 63,483 psi | 88% | 3084 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 61,946 psi | 85% | 3146 fps | 100% |
| Hodgdon H322 | <<locked>> | 82% | 63,846 psi | 88% | 3031 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 65,557 psi | 90% | 3064 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 64,426 psi | 89% | 3117 fps | 100% |
| Hodgdon H414 | <<locked>> | 98% | 65,035 psi | 90% | 3189 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 96% | 64,658 psi | 89% | 3140 fps | 98.7% |
| Hodgdon H4895 | <<locked>> | 88% | 65,282 psi | 90% | 3117 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 59,379 psi | 82% | 3051 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 61,743 psi | 85% | 3104 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 62,076 psi | 86% | 3179 fps | 99.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,013 psi | 50% | 1850 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 62,453 psi | 86% | 3064 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 61,902 psi | 85% | 3038 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 65,253 psi | 90% | 3091 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 90% | 64,730 psi | 89% | 3081 fps | 99.4% |
| IMR 4198 | <<locked>> | 82% | 63,324 psi | 87% | 2930 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 63,947 psi | 88% | 3110 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 96% | 64,687 psi | 89% | 3107 fps | 99.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 62,569 psi | 86% | 3117 fps | 100% |
| IMR 4895 | <<locked>> | 90% | 64,672 psi | 89% | 3136 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 63,063 psi | 87% | 3048 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 64,165 psi | 88% | 3038 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 65,586 psi | 90% | 3081 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 63,135 psi | 87% | 3025 fps | 100% |
| Lovex S062 | <<locked>> | 92% | 65,209 psi | 90% | 3081 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 64,426 psi | 89% | 3097 fps | 99.9% |
| Lovex S070 | <<locked>> | 98% | 62,250 psi | 86% | 3087 fps | 99.3% |
| Lovex S071ᴾ | <<locked>> | 100% | 40,263 psi | 56% | 2733 fps | 96.1% |
| Norma 201 | <<locked>> | 88% | 63,135 psi | 87% | 3048 fps | 100% |
| Norma 202 | <<locked>> | 88% | 63,947 psi | 88% | 3041 fps | 100% |
| Norma 203B | <<locked>> | 90% | 62,207 psi | 86% | 3091 fps | 100% |
| Norma 204 | <<locked>> | 98% | 61,337 psi | 85% | 3114 fps | 97.9% |
| Norma MRPᴾ | <<locked>> | 100% | 51,198 psi | 71% | 3058 fps | 97.8% |
| Norma URPᴾ | <<locked>> | 100% | 64,600 psi | 89% | 3166 fps | 100% |
| Ramshot Big Game | <<locked>> | 90% | 63,440 psi | 87% | 3120 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 63,672 psi | 88% | 3169 fps | 99.8% |
| Ramshot TAC | <<locked>> | 86% | 63,817 psi | 88% | 3087 fps | 99.9% |
| Ramshot Wild Boar | <<locked>> | 86% | 63,875 psi | 88% | 3100 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 84% | 64,150 psi | 88% | 3058 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,637 psi | 51% | 1896 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 62,337 psi | 86% | 3025 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 64,382 psi | 89% | 3100 fps | 99.7% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 64,643 psi | 89% | 3186 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 64,498 psi | 89% | 3212 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 62,134 psi | 86% | 3153 fps | 100% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 65,615 psi | 90% | 3251 fps | 100% |
| Rottweil R 901 | <<locked>> | 86% | 63,657 psi | 88% | 3018 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 63,672 psi | 88% | 3045 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 63,570 psi | 88% | 3091 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 57,479 psi | 79% | 3018 fps | 96.2% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 53,795 psi | 74% | 3018 fps | 97% |
| Rottweil R 907 | <<locked>> | 96% | 63,106 psi | 87% | 3081 fps | 98.9% |
| Shooters World Long Rifle | <<locked>> | 98% | 64,426 psi | 89% | 3097 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 88% | 65,586 psi | 90% | 3081 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 65,209 psi | 90% | 3081 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 62,250 psi | 86% | 3087 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 65,615 psi | 90% | 3156 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 65,514 psi | 90% | 3012 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 62,642 psi | 86% | 3064 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 63,063 psi | 87% | 3081 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 64,179 psi | 89% | 2972 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 64,803 psi | 89% | 2966 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 65,180 psi | 90% | 3054 fps | 99.4% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 53,301 psi | 74% | 3012 fps | 96.8% |
| Somchem S321 | <<locked>> | 84% | 65,166 psi | 90% | 3087 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 63,585 psi | 88% | 2966 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 62,265 psi | 86% | 3048 fps | 100% |
| Somchem S355 | <<locked>> | 94% | 63,266 psi | 87% | 3084 fps | 100% |
| Somchem S361ᴾ | <<locked>> | 100% | 59,843 psi | 83% | 3015 fps | 95.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 59,756 psi | 82% | 3114 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 54,665 psi | 75% | 2999 fps | 97.9% |
| Vihtavuori N130 | <<locked>> | 84% | 63,527 psi | 88% | 2923 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 64,440 psi | 89% | 2949 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 63,846 psi | 88% | 2995 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 64,513 psi | 89% | 3015 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 65,354 psi | 90% | 3058 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 63,338 psi | 87% | 3107 fps | 100% |
| Vihtavuori N530 | <<locked>> | 86% | 64,078 psi | 88% | 3051 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 62,511 psi | 86% | 3015 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 62,134 psi | 86% | 3110 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 50,836 psi | 70% | 2999 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 63,802 psi | 88% | 3077 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 64,861 psi | 89% | 3104 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 65,398 psi | 90% | 3192 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,104 psi | 57% | 2949 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 88% | 63,396 psi | 87% | 3087 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 51,198 psi | 71% | 2930 fps | 96.1% |
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% | 54,404 psi | 75% | 2841 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 60,089 psi | 83% | 2969 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 47,369 psi | 65% | 2772 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 55,100 psi | 76% | 2933 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 45,803 psi | 63% | 2756 fps | 95.7% |
| Accurate 3100 | <<locked>> | 94% | 39,363 psi | 54% | 2713 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 44,846 psi | 62% | 2772 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 33,518 psi | 46% | 2598 fps | 95.6% |
| ADI APS 450 | <<locked>> | 80% | 58,073 psi | 80% | 2280 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 50,256 psi | 69% | 2890 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 42,656 psi | 59% | 2733 fps | 98.7% |
| ADI AR 2209 | <<locked>> | 96% | 48,936 psi | 67% | 2930 fps | 95.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 52,344 psi | 72% | 2894 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 53,824 psi | 74% | 2871 fps | 100% |
| Alliant Power Pro 2000-MR | 50.1 gr | 80% | 46,557 psi | 64% | 2946 fps | 99.4% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 48,834 psi | 67% | 2927 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,757 psi | 59% | 2759 fps | 99.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 60,597 psi | 84% | 2936 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,861 psi | 63% | 2831 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 33,315 psi | 46% | 2608 fps | 95.7% |
| Alliant Reloder-17 | 49.3 gr | 80% | 37,347 psi | 52% | 2743 fps | 98.7% |
| Alliant Reloder-19 | <<locked>> | 96% | 48,182 psi | 66% | 2917 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 86% | 29,182 psi | 40% | 2516 fps | 95.5% |
| Alliant Reloder-25 | <<locked>> | 98% | 37,594 psi | 52% | 2753 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 88% | 33,736 psi | 47% | 2700 fps | 95% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,922 psi | 69% | 2904 fps | 99.5% |
| Bofors RP3 | <<locked>> | 80% | 42,873 psi | 59% | 2769 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 43,439 psi | 60% | 2743 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 53,766 psi | 74% | 2877 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 52,069 psi | 72% | 2923 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 58,001 psi | 80% | 3087 fps | 100% |
| Hodgdon H322 | <<locked>> | 80% | 60,133 psi | 83% | 2986 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 61,163 psi | 84% | 3012 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,395 psi | 60% | 2772 fps | 98% |
| Hodgdon H414 | <<locked>> | 84% | 40,901 psi | 56% | 2772 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 86% | 47,065 psi | 65% | 2854 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 50,778 psi | 70% | 2904 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,792 psi | 42% | 2507 fps | 96.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,195 psi | 65% | 2877 fps | 100% |
| Hodgdon Superformance | 56 gr | 86% | 42,975 psi | 59% | 2841 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,774 psi | 37% | 1654 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,747 psi | 67% | 2854 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 51,068 psi | 70% | 2890 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,846 psi | 62% | 2772 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,369 psi | 65% | 2799 fps | 96.9% |
| IMR 4198 | <<locked>> | 80% | 59,973 psi | 83% | 2887 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 43,743 psi | 60% | 2772 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 82% | 42,148 psi | 58% | 2720 fps | 95.4% |
| IMR 4831 | <<locked>> | 80% | 32,460 psi | 45% | 2556 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 46,992 psi | 65% | 2861 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 80% | 52,344 psi | 72% | 2894 fps | 100% |
| Lovex D073.5 | <<locked>> | 80% | 59,799 psi | 82% | 2982 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 50,082 psi | 69% | 2867 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,559 psi | 68% | 2818 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 44,962 psi | 62% | 2772 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 37,115 psi | 51% | 2612 fps | 95.4% |
| Lovex S070 | <<locked>> | 84% | 40,045 psi | 55% | 2694 fps | 95.1% |
| Lovex S071 | <<locked>> | 98% | 37,753 psi | 52% | 2680 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 49,240 psi | 68% | 2841 fps | 100% |
| Norma 202 | <<locked>> | 80% | 49,588 psi | 68% | 2841 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,237 psi | 62% | 2815 fps | 99.5% |
| Norma 204 | <<locked>> | 92% | 49,821 psi | 69% | 2927 fps | 95.6% |
| Norma MRP | <<locked>> | 94% | 41,568 psi | 57% | 2858 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 33,634 psi | 46% | 2598 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 45,310 psi | 62% | 2838 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 86% | 39,972 psi | 55% | 2759 fps | 95.9% |
| Ramshot TAC | <<locked>> | 80% | 52,431 psi | 72% | 2913 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 80% | 52,228 psi | 72% | 2927 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 80% | 56,420 psi | 78% | 2946 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,195 psi | 38% | 1693 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 58,465 psi | 81% | 2972 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,656 psi | 60% | 2756 fps | 96.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 49,052 psi | 68% | 2946 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,740 psi | 55% | 2808 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,272 psi | 46% | 2612 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 35,070 psi | 48% | 2674 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 53,417 psi | 74% | 2874 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 46,789 psi | 65% | 2789 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 40,393 psi | 56% | 2710 fps | 99.2% |
| Rottweil R 904 | <<locked>> | 98% | 54,114 psi | 75% | 2966 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 96% | 47,166 psi | 65% | 2900 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 84% | 43,439 psi | 60% | 2743 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,115 psi | 51% | 2612 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 50,082 psi | 69% | 2867 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,962 psi | 62% | 2772 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 84% | 40,045 psi | 55% | 2694 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,307 psi | 57% | 2759 fps | 98.9% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 61,656 psi | 85% | 2963 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,981 psi | 70% | 2887 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,660 psi | 67% | 2858 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,328 psi | 69% | 2782 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,308 psi | 58% | 2641 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 41,466 psi | 57% | 2664 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 46,717 psi | 64% | 2897 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 57,116 psi | 79% | 2979 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 49,980 psi | 69% | 2779 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,807 psi | 70% | 2881 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 40,959 psi | 56% | 2713 fps | 99.2% |
| Somchem S361 | <<locked>> | 98% | 56,144 psi | 77% | 2959 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 30,298 psi | 42% | 2549 fps | 97.8% |
| Somchem S385 | <<locked>> | 94% | 44,744 psi | 62% | 2822 fps | 95.6% |
| Vihtavuori N130 | <<locked>> | 80% | 56,463 psi | 78% | 2835 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 50,792 psi | 70% | 2769 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,905 psi | 65% | 2762 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,152 psi | 65% | 2772 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,044 psi | 54% | 2644 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 34,983 psi | 48% | 2602 fps | 96% |
| Vihtavuori N530 | <<locked>> | 80% | 52,634 psi | 73% | 2890 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 45,440 psi | 63% | 2759 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,505 psi | 48% | 2598 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 86% | 32,082 psi | 44% | 2602 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,505 psi | 48% | 2572 fps | 98.1% |
| Winchester 748 | <<locked>> | 80% | 53,055 psi | 73% | 2943 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 40,901 psi | 56% | 2772 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 88% | 27,630 psi | 38% | 2539 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 48,689 psi | 67% | 2867 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 98% | 47,776 psi | 66% | 2871 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 117 powders for .270 Win. Ackley Improved loaded with the .277 | 130gr | Reichenberg HDB Universal. ReloadSwiss RS 70 delivers the highest muzzle velocity at 3,251 fps; across all powders the maximum-charge window runs from 1,850 fps to 3,251 fps. Accurate 3100 gives the best case fill at 100 %, and 117 of the 117 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 130.0 gr projectile in 0.277" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Power Pro Varmint 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, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .270 Win. Ackley Improved with the .277 | 130gr | Reichenberg HDB Universal 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.