Load Specifications
Load data in caliber 7 x 44 Penna with .277 | 87gr | CutEdge ESP Raptor bullet and 22 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate 5744, Shooters World Buffalo Rifle and Lovex D060.
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% | 49,879 psi | 78% | 2746 fps | 96.8% |
| Accurate 5744 | <<locked>> | 90% | 57,740 psi | 90% | 2897 fps | 98.9% |
| Accurate No. 11 FS | <<locked>> | 92% | 56,362 psi | 88% | 2838 fps | 100% |
| ADI APS 450 | <<locked>> | 86% | 56,753 psi | 89% | 2126 fps | 100% |
| ADI AR 2205 | <<locked>> | 96% | 57,609 psi | 90% | 2762 fps | 100% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 39,233 psi | 61% | 2690 fps | 98.6% |
| Alliant Reloder-7ᴾ | <<locked>> | 100% | 42,438 psi | 67% | 2687 fps | 96.2% |
| Hodgdon LilGun | <<locked>> | 88% | 57,522 psi | 90% | 2881 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 27,383 psi | 43% | 1640 fps | 100% |
| IMR 4227ᴾ | <<locked>> | 100% | 52,199 psi | 82% | 2789 fps | 99.3% |
| Lovex D060 | <<locked>> | 96% | 57,740 psi | 90% | 2897 fps | 98.9% |
| Lovex D063 | <<locked>> | 90% | 54,897 psi | 86% | 2835 fps | 98.6% |
| Lovex S040 | <<locked>> | 88% | 56,115 psi | 88% | 2736 fps | 100% |
| Lovex S053ᴾ | <<locked>> | 100% | 49,269 psi | 77% | 2753 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 26,832 psi | 42% | 1683 fps | 100% |
| ReloadSwiss RS 36ᴾ | <<locked>> | 100% | 49,995 psi | 78% | 2808 fps | 99% |
| Shooters World Blackout | <<locked>> | 90% | 54,897 psi | 86% | 2835 fps | 98.6% |
| Shooters World Buffalo Rifle | <<locked>> | 96% | 57,740 psi | 90% | 2897 fps | 98.9% |
| Shooters World SOCOM | <<locked>> | 94% | 55,492 psi | 87% | 2818 fps | 99% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 45,121 psi | 71% | 2559 fps | 100% |
| Vihtavuori N110 | <<locked>> | 98% | 54,984 psi | 86% | 2762 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 39,697 psi | 62% | 2657 fps | 99.4% |
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>> | 96% | 43,366 psi | 68% | 2641 fps | 95.4% |
| Accurate 5744 | 18.8 gr | 80% | 42,511 psi | 67% | 2644 fps | 96.4% |
| Accurate No. 11 FS | <<locked>> | 80% | 37,884 psi | 59% | 2543 fps | 98.4% |
| ADI APS 450 | <<locked>> | 80% | 51,213 psi | 80% | 2051 fps | 100% |
| ADI AR 2205 | <<locked>> | 80% | 35,766 psi | 56% | 2421 fps | 99.2% |
| ADI AR 2207 | <<locked>> | 90% | 29,240 psi | 46% | 2461 fps | 95.8% |
| Alliant Reloder-7 | <<locked>> | 98% | 40,161 psi | 63% | 2644 fps | 95.6% |
| Hodgdon LilGun | <<locked>> | 80% | 43,265 psi | 68% | 2690 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 19,682 psi | 31% | 1463 fps | 100% |
| IMR 4227 | <<locked>> | 84% | 32,329 psi | 51% | 2425 fps | 95.2% |
| Lovex D060 | 18 gr | 82% | 38,130 psi | 60% | 2552 fps | 95.1% |
| Lovex D063 | <<locked>> | 80% | 38,885 psi | 61% | 2566 fps | 95.5% |
| Lovex S040 | <<locked>> | 80% | 44,063 psi | 69% | 2566 fps | 100% |
| Lovex S053 | <<locked>> | 80% | 27,108 psi | 42% | 2310 fps | 97% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 19,464 psi | 31% | 1503 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 32,213 psi | 50% | 2470 fps | 95% |
| Shooters World Blackout | <<locked>> | 80% | 38,885 psi | 61% | 2566 fps | 95.5% |
| Shooters World Buffalo Rifle | 18 gr | 82% | 38,130 psi | 60% | 2552 fps | 95.1% |
| Shooters World SOCOM | <<locked>> | 82% | 37,246 psi | 58% | 2516 fps | 95.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 25,991 psi | 41% | 2201 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 32,358 psi | 51% | 2405 fps | 100% |
| Vihtavuori N120 | <<locked>> | 86% | 26,310 psi | 41% | 2346 fps | 95.7% |
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 22 powders for 7 x 44 Penna loaded with the .277 | 87gr | CutEdge ESP Raptor. Accurate 5744 delivers the highest muzzle velocity at 2,897 fps; across all powders the maximum-charge window runs from 1,640 fps to 2,897 fps. Accurate 1680 gives the best case fill at 100 %, and 22 of the 22 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 42–90 %, leaving at least 10 % headroom. The 87.0 gr projectile in 0.277" calls for a 1:10.5 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. Accurate 5744, Shooters World Buffalo Rifle, Lovex D060 rank at the top here: for 7 x 44 Penna with the .277 | 87gr | CutEdge ESP Raptor 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.