Load Specifications
Load data in caliber 7 x 44 Penna with .277 | 85gr | Barnes TAC-X bullet and 24 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Shooters World Buffalo Rifle, Lovex D060 and Shooters World Blackout.
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.
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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680ᴾ | <<locked>> | 100% | 53,592 psi | 84% | 2890 fps | 98% |
| Accurate 5744 | <<locked>> | 88% | 57,551 psi | 90% | 2992 fps | 99.2% |
| Accurate No. 11 FS | <<locked>> | 90% | 56,623 psi | 89% | 2927 fps | 100% |
| ADI APS 450 | <<locked>> | 86% | 57,450 psi | 90% | 2215 fps | 100% |
| ADI AR 2205 | <<locked>> | 92% | 54,462 psi | 85% | 2812 fps | 100% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 42,830 psi | 67% | 2838 fps | 99.5% |
| Alliant Reloder-7ᴾ | <<locked>> | 100% | 46,267 psi | 73% | 2838 fps | 97.6% |
| Hodgdon LilGun | <<locked>> | 84% | 53,722 psi | 84% | 2913 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 28,268 psi | 44% | 1716 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 39,175 psi | 61% | 2700 fps | 96.1% |
| IMR 4227ᴾ | <<locked>> | 100% | 55,637 psi | 87% | 2930 fps | 99.8% |
| Lovex D060 | <<locked>> | 94% | 57,551 psi | 90% | 2992 fps | 99.2% |
| Lovex D063 | <<locked>> | 88% | 54,433 psi | 85% | 2920 fps | 99% |
| Lovex S040 | <<locked>> | 86% | 56,086 psi | 88% | 2818 fps | 100% |
| Lovex S053ᴾ | <<locked>> | 100% | 52,141 psi | 82% | 2877 fps | 100% |
| Norma 200ᴾ | <<locked>> | 100% | 39,117 psi | 61% | 2772 fps | 96.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 27,224 psi | 43% | 1749 fps | 100% |
| ReloadSwiss RS 36ᴾ | <<locked>> | 100% | 54,186 psi | 85% | 2956 fps | 99.7% |
| Shooters World Blackout | <<locked>> | 88% | 54,433 psi | 85% | 2920 fps | 99% |
| Shooters World Buffalo Rifle | <<locked>> | 94% | 57,551 psi | 90% | 2992 fps | 99.2% |
| Shooters World SOCOM | <<locked>> | 92% | 55,825 psi | 87% | 2917 fps | 99.4% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 47,935 psi | 75% | 2671 fps | 100% |
| Vihtavuori N110 | <<locked>> | 96% | 55,361 psi | 87% | 2848 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 43,192 psi | 68% | 2802 fps | 99.9% |
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 1680 | <<locked>> | 92% | 41,075 psi | 64% | 2684 fps | 95.5% |
| Accurate 5744 | <<locked>> | 80% | 45,121 psi | 71% | 2782 fps | 97.5% |
| Accurate No. 11 FS | <<locked>> | 80% | 40,364 psi | 63% | 2671 fps | 99.1% |
| ADI APS 450 | <<locked>> | 80% | 51,648 psi | 81% | 2136 fps | 100% |
| ADI AR 2205 | <<locked>> | 80% | 37,898 psi | 59% | 2543 fps | 99.7% |
| ADI AR 2207 | <<locked>> | 86% | 27,891 psi | 44% | 2497 fps | 95.7% |
| Alliant Reloder-7 | <<locked>> | 94% | 38,247 psi | 60% | 2687 fps | 95.7% |
| Hodgdon LilGun | <<locked>> | 80% | 47,108 psi | 74% | 2825 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 20,204 psi | 32% | 1526 fps | 100% |
| IMR 4198 | <<locked>> | 98% | 37,318 psi | 58% | 2661 fps | 95.5% |
| IMR 4227 | <<locked>> | 80% | 30,211 psi | 47% | 2448 fps | 95% |
| Lovex D060 | 19.2 gr | 80% | 37,913 psi | 59% | 2631 fps | 95.7% |
| Lovex D063 | <<locked>> | 80% | 41,220 psi | 65% | 2694 fps | 96.8% |
| Lovex S040 | <<locked>> | 80% | 46,673 psi | 73% | 2687 fps | 100% |
| Lovex S053 | <<locked>> | 80% | 29,066 psi | 46% | 2431 fps | 98.1% |
| Norma 200 | <<locked>> | 98% | 36,695 psi | 57% | 2720 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 19,943 psi | 31% | 1568 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 82% | 30,705 psi | 48% | 2507 fps | 95% |
| Shooters World Blackout | 21.4 gr | 80% | 41,220 psi | 65% | 2694 fps | 96.8% |
| Shooters World Buffalo Rifle | 19.2 gr | 80% | 37,913 psi | 59% | 2631 fps | 95.7% |
| Shooters World SOCOM | <<locked>> | 80% | 36,840 psi | 58% | 2589 fps | 96.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 27,934 psi | 44% | 2313 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 34,563 psi | 54% | 2520 fps | 100% |
| Vihtavuori N120 | <<locked>> | 82% | 24,990 psi | 39% | 2375 fps | 95.6% |
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 24 powders for 7 x 44 Penna loaded with the .277 | 85gr | Barnes TAC-X. Accurate 5744 delivers the highest muzzle velocity at 2,992 fps; across all powders the maximum-charge window runs from 1,716 fps to 2,992 fps. Accurate 1680 gives the best case fill at 100 %, and 24 of the 24 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 43–90 %, leaving at least 10 % headroom. The 85.0 gr projectile in 0.277" calls for a 1:13.5 twist; slower twists will usually not stabilise this weight. Accurate 1680, ADI AR 2207, Alliant Reloder-7 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. Shooters World Buffalo Rifle, Lovex D060, Shooters World Blackout rank at the top here: for 7 x 44 Penna with the .277 | 85gr | Barnes TAC-X 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.