Load Specifications
Load data in caliber 7 x 44 Penna with .277 | 100gr | Speer Spitzer Soft Point bullet and 31 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 36, 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 1680 | <<locked>> | 96% | 55,071 psi | 86% | 2713 fps | 99.5% |
| Accurate 5744 | <<locked>> | 82% | 54,708 psi | 86% | 2736 fps | 99.9% |
| Accurate LT-30ᴾ | <<locked>> | 100% | 51,619 psi | 81% | 2651 fps | 97.2% |
| Accurate No. 11 FS | <<locked>> | 84% | 54,114 psi | 85% | 2674 fps | 100% |
| ADI APS 450 | <<locked>> | 84% | 56,956 psi | 89% | 2041 fps | 100% |
| ADI AR 2205 | <<locked>> | 88% | 54,897 psi | 86% | 2602 fps | 100% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 52,257 psi | 82% | 2759 fps | 100% |
| ADI AR 2219ᴾ | <<locked>> | 100% | 48,095 psi | 75% | 2726 fps | 96.3% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 34,505 psi | 54% | 2520 fps | 97.3% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 42,917 psi | 67% | 2648 fps | 98.4% |
| Alliant Reloder-7ᴾ | <<locked>> | 100% | 54,882 psi | 86% | 2759 fps | 99.8% |
| Baschieri & Pellagri 106ᴾ | <<locked>> | 100% | 49,690 psi | 78% | 2644 fps | 97.2% |
| Hodgdon H4198ᴾ | <<locked>> | 100% | 57,203 psi | 90% | 2746 fps | 97.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 30,023 psi | 47% | 1601 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 46,354 psi | 73% | 2644 fps | 99.4% |
| IMR 4227 | <<locked>> | 96% | 57,464 psi | 90% | 2736 fps | 100% |
| Lovex D060 | <<locked>> | 88% | 54,708 psi | 86% | 2736 fps | 99.9% |
| Lovex D063 | <<locked>> | 84% | 55,405 psi | 87% | 2723 fps | 99.9% |
| Lovex S040 | <<locked>> | 82% | 57,029 psi | 89% | 2602 fps | 100% |
| Lovex S053 | <<locked>> | 96% | 54,621 psi | 86% | 2684 fps | 100% |
| Norma 200ᴾ | <<locked>> | 100% | 48,907 psi | 77% | 2730 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 29,762 psi | 47% | 1640 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 96% | 56,898 psi | 89% | 2772 fps | 100% |
| Shooters World Blackout | <<locked>> | 84% | 55,405 psi | 87% | 2723 fps | 99.9% |
| Shooters World Buffalo Rifle | <<locked>> | 88% | 54,708 psi | 86% | 2736 fps | 99.9% |
| Shooters World SOCOM | <<locked>> | 88% | 56,130 psi | 88% | 2713 fps | 100% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 55,477 psi | 87% | 2539 fps | 100% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 44,846 psi | 70% | 2648 fps | 96.7% |
| Vihtavuori N110 | <<locked>> | 92% | 57,609 psi | 90% | 2638 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 52,475 psi | 82% | 2713 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 42,076 psi | 66% | 2562 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 1680 | <<locked>> | 80% | 32,837 psi | 51% | 2329 fps | 95.4% |
| Accurate 5744 | <<locked>> | 80% | 51,532 psi | 81% | 2687 fps | 99.7% |
| Accurate LT-30 | <<locked>> | 94% | 43,192 psi | 68% | 2516 fps | 95.4% |
| Accurate No. 11 FS | <<locked>> | 80% | 47,369 psi | 74% | 2582 fps | 100% |
| ADI APS 450 | <<locked>> | 80% | 53,374 psi | 84% | 1995 fps | 100% |
| ADI AR 2205 | <<locked>> | 80% | 43,134 psi | 68% | 2434 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 28,166 psi | 44% | 2313 fps | 97.9% |
| ADI AR 2219 | <<locked>> | 98% | 45,179 psi | 71% | 2677 fps | 95.6% |
| Alliant AR-Comp | <<locked>> | 96% | 30,589 psi | 48% | 2421 fps | 95.7% |
| Alliant Reloder-10x | <<locked>> | 90% | 31,488 psi | 49% | 2411 fps | 95.2% |
| Alliant Reloder-7 | <<locked>> | 80% | 29,965 psi | 47% | 2303 fps | 95.1% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 40,915 psi | 64% | 2503 fps | 95.2% |
| Hodgdon H4198 | <<locked>> | 92% | 45,049 psi | 71% | 2562 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 21,814 psi | 34% | 1427 fps | 100% |
| IMR 4198 | <<locked>> | 84% | 29,414 psi | 46% | 2287 fps | 95% |
| IMR 4227 | <<locked>> | 80% | 35,723 psi | 56% | 2388 fps | 98.7% |
| Lovex D060 | 19.5 gr | 80% | 43,569 psi | 68% | 2552 fps | 98.8% |
| Lovex D063 | <<locked>> | 80% | 48,472 psi | 76% | 2625 fps | 99.5% |
| Lovex S040 | <<locked>> | 80% | 53,548 psi | 84% | 2559 fps | 100% |
| Lovex S053 | <<locked>> | 80% | 34,824 psi | 55% | 2365 fps | 100% |
| Norma 200 | <<locked>> | 84% | 29,544 psi | 46% | 2352 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 21,756 psi | 34% | 1467 fps | 100% |
| ReloadSwiss RS 36 | 20.3 gr | 80% | 34,635 psi | 54% | 2408 fps | 98.3% |
| Shooters World Blackout | <<locked>> | 80% | 48,472 psi | 76% | 2625 fps | 99.5% |
| Shooters World Buffalo Rifle | 19.5 gr | 80% | 43,569 psi | 68% | 2552 fps | 98.8% |
| Shooters World SOCOM | <<locked>> | 80% | 43,511 psi | 68% | 2526 fps | 99.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 32,808 psi | 51% | 2211 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 39,769 psi | 62% | 2556 fps | 95.4% |
| Vihtavuori N110 | <<locked>> | 80% | 41,278 psi | 65% | 2418 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 28,500 psi | 45% | 2290 fps | 98.9% |
| Vihtavuori N130 | <<locked>> | 92% | 32,967 psi | 52% | 2382 fps | 95.3% |
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 31 powders for 7 x 44 Penna loaded with the .277 | 100gr | Speer Spitzer Soft Point. ReloadSwiss RS 36 delivers the highest muzzle velocity at 2,772 fps; across all powders the maximum-charge window runs from 1,601 fps to 2,772 fps. Accurate LT-30 gives the best case fill at 100 %, and 31 of the 31 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 47–90 %, leaving at least 10 % headroom. The 100.0 gr projectile in 0.277" calls for a 1:15.0 twist; slower twists will usually not stabilise this weight. Accurate LT-30, ADI AR 2207, ADI AR 2219 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 36, Shooters World Buffalo Rifle, Lovex D060 rank at the top here: for 7 x 44 Penna with the .277 | 100gr | Speer Spitzer Soft Point 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.