Load Specifications
Load data in caliber 7 x 44 Penna with .277 | 140gr | Winchester FailSafe bullet and 47 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Shooters World AR Plus, Lovex D073.4 and ADI AR 2219.
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>> | 94% | 56,333 psi | 88% | 2208 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 40,596 psi | 64% | 2100 fps | 98.8% |
| Accurate 2460ᴾ | <<locked>> | 100% | 44,788 psi | 70% | 2172 fps | 96.9% |
| Accurate 2495ᴾ | <<locked>> | 100% | 29,109 psi | 46% | 1988 fps | 96.6% |
| Accurate 5744 | <<locked>> | 84% | 55,840 psi | 88% | 2215 fps | 100% |
| Accurate LT-30ᴾ | <<locked>> | 100% | 56,043 psi | 88% | 2201 fps | 99.5% |
| Accurate LT-32ᴾ | <<locked>> | 100% | 56,666 psi | 89% | 2205 fps | 98.2% |
| Accurate No. 11 FS | <<locked>> | 82% | 55,056 psi | 86% | 2152 fps | 100% |
| ADI APS 450 | <<locked>> | 82% | 55,579 psi | 87% | 1604 fps | 100% |
| ADI AR 2205 | <<locked>> | 86% | 55,753 psi | 87% | 2090 fps | 100% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 57,421 psi | 90% | 2267 fps | 100% |
| ADI AR 2219ᴾ | <<locked>> | 100% | 52,982 psi | 83% | 2287 fps | 99.2% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 38,189 psi | 60% | 2126 fps | 99.9% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 47,819 psi | 75% | 2208 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 98% | 56,927 psi | 89% | 2247 fps | 100% |
| Baschieri & Pellagri 106ᴾ | <<locked>> | 100% | 53,635 psi | 84% | 2198 fps | 99.4% |
| Hodgdon CFE BLK | <<locked>> | 86% | 57,624 psi | 90% | 2260 fps | 96.7% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 43,047 psi | 67% | 2156 fps | 97.8% |
| Hodgdon H335ᴾ | <<locked>> | 100% | 51,663 psi | 81% | 2277 fps | 98.3% |
| Hodgdon H4198ᴾ | <<locked>> | 100% | 57,740 psi | 90% | 2231 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 30,879 psi | 48% | 1273 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 32,953 psi | 52% | 2034 fps | 95.9% |
| IMR 4198ᴾ | <<locked>> | 100% | 50,459 psi | 79% | 2188 fps | 100% |
| IMR 4227 | <<locked>> | 92% | 55,434 psi | 87% | 2175 fps | 100% |
| Lovex D060 | <<locked>> | 86% | 55,840 psi | 88% | 2215 fps | 100% |
| Lovex D063 | <<locked>> | 86% | 57,159 psi | 90% | 2195 fps | 100% |
| Lovex D073.4 | <<locked>> | 98% | 54,288 psi | 85% | 2287 fps | 97.9% |
| Lovex S053 | <<locked>> | 94% | 56,188 psi | 88% | 2162 fps | 100% |
| Norma 200ᴾ | <<locked>> | 100% | 54,027 psi | 85% | 2264 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 30,327 psi | 48% | 1299 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 94% | 57,537 psi | 90% | 2238 fps | 100% |
| ReloadSwiss RS 40ᴾ | <<locked>> | 100% | 46,949 psi | 74% | 2192 fps | 96.5% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 40,524 psi | 64% | 2096 fps | 96% |
| Shooters World AR Plus | <<locked>> | 98% | 54,288 psi | 85% | 2287 fps | 97.9% |
| Shooters World Blackout | <<locked>> | 82% | 55,883 psi | 88% | 2198 fps | 100% |
| Shooters World Buffalo Rifle | <<locked>> | 86% | 55,840 psi | 88% | 2215 fps | 100% |
| Shooters World SOCOM | <<locked>> | 86% | 57,159 psi | 90% | 2195 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 98% | 56,913 psi | 89% | 2034 fps | 100% |
| SNPE Vectan SP 10ᴾ | <<locked>> | 100% | 52,460 psi | 82% | 2283 fps | 98.4% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 48,907 psi | 77% | 2205 fps | 99.3% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 40,683 psi | 64% | 2041 fps | 96% |
| Somchem S335ᴾ | <<locked>> | 100% | 38,740 psi | 61% | 2044 fps | 96.7% |
| Vihtavuori N110 | <<locked>> | 88% | 55,999 psi | 88% | 2083 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 57,580 psi | 90% | 2224 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 45,905 psi | 72% | 2126 fps | 99.8% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 39,798 psi | 62% | 2051 fps | 98.4% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 32,372 psi | 51% | 2005 fps | 97% |
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% | 35,404 psi | 55% | 1936 fps | 98.5% |
| Accurate 2015 | <<locked>> | 88% | 28,311 psi | 44% | 1883 fps | 95.6% |
| Accurate 2460 | <<locked>> | 96% | 39,073 psi | 61% | 2090 fps | 95.6% |
| Accurate 2495 | <<locked>> | 96% | 25,570 psi | 40% | 1913 fps | 95.2% |
| Accurate 5744 | <<locked>> | 80% | 49,719 psi | 78% | 2142 fps | 100% |
| Accurate LT-30 | <<locked>> | 82% | 32,866 psi | 52% | 1873 fps | 95.2% |
| Accurate LT-32 | <<locked>> | 90% | 41,930 psi | 66% | 2018 fps | 95.6% |
| Accurate No. 11 FS | <<locked>> | 80% | 51,953 psi | 81% | 2123 fps | 100% |
| ADI APS 450 | <<locked>> | 80% | 53,838 psi | 84% | 1585 fps | 100% |
| ADI AR 2205 | <<locked>> | 80% | 46,804 psi | 73% | 1995 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 31,343 psi | 49% | 1926 fps | 99.9% |
| ADI AR 2219 | 19 gr | 86% | 33,649 psi | 53% | 1995 fps | 95.1% |
| Alliant AR-Comp | <<locked>> | 84% | 23,743 psi | 37% | 1814 fps | 95.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 25,759 psi | 40% | 1831 fps | 95.9% |
| Alliant Reloder-7 | <<locked>> | 80% | 32,721 psi | 51% | 1919 fps | 98.5% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 32,372 psi | 51% | 1896 fps | 95.4% |
| Hodgdon CFE BLK | <<locked>> | 82% | 50,604 psi | 79% | 2175 fps | 95.5% |
| Hodgdon H322 | <<locked>> | 92% | 34,156 psi | 54% | 2005 fps | 95.3% |
| Hodgdon H335 | <<locked>> | 90% | 37,159 psi | 58% | 2067 fps | 95.1% |
| Hodgdon H4198 | <<locked>> | 82% | 34,243 psi | 54% | 1906 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,887 psi | 36% | 1138 fps | 100% |
| IMR 3031 | <<locked>> | 98% | 31,067 psi | 49% | 1995 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 28,587 psi | 45% | 1837 fps | 97.6% |
| IMR 4227 | <<locked>> | 80% | 39,117 psi | 61% | 1975 fps | 100% |
| Lovex D060 | <<locked>> | 80% | 46,934 psi | 74% | 2103 fps | 100% |
| Lovex D063 | <<locked>> | 80% | 46,557 psi | 73% | 2077 fps | 100% |
| Lovex D073.4 | 20.6 gr | 90% | 40,495 psi | 63% | 2110 fps | 95.2% |
| Lovex S053 | <<locked>> | 80% | 37,826 psi | 59% | 1939 fps | 100% |
| Norma 200 | <<locked>> | 80% | 29,095 psi | 46% | 1893 fps | 97.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,582 psi | 35% | 1165 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 37,710 psi | 59% | 1991 fps | 99.9% |
| ReloadSwiss RS 40 | <<locked>> | 96% | 41,263 psi | 65% | 2110 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 98% | 38,261 psi | 60% | 2060 fps | 95.4% |
| Shooters World AR Plus | 20.6 gr | 90% | 40,495 psi | 63% | 2110 fps | 95.2% |
| Shooters World Blackout | <<locked>> | 80% | 51,895 psi | 81% | 2156 fps | 100% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 46,934 psi | 74% | 2103 fps | 100% |
| Shooters World SOCOM | <<locked>> | 80% | 46,557 psi | 73% | 2077 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 35,534 psi | 56% | 1795 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 90% | 38,261 psi | 60% | 2083 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 30,530 psi | 48% | 1906 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 98% | 38,290 psi | 60% | 2005 fps | 95.3% |
| Somchem S335 | <<locked>> | 96% | 34,563 psi | 54% | 1975 fps | 95.4% |
| Vihtavuori N110 | <<locked>> | 80% | 44,353 psi | 70% | 1959 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 31,604 psi | 50% | 1900 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 25,469 psi | 40% | 1775 fps | 95.2% |
| Vihtavuori N133 | <<locked>> | 90% | 29,863 psi | 47% | 1873 fps | 95.7% |
| Vihtavuori N135 | <<locked>> | 96% | 28,819 psi | 45% | 1929 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 47 powders for 7 x 44 Penna loaded with the .277 | 140gr | Winchester FailSafe. ADI AR 2219 delivers the highest muzzle velocity at 2,287 fps; across all powders the maximum-charge window runs from 1,273 fps to 2,287 fps. Accurate 2015 gives the best case fill at 100 %, and 47 of the 47 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 46–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.277" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 2015, Accurate 2460, Accurate 2495 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 AR Plus, Lovex D073.4, ADI AR 2219 rank at the top here: for 7 x 44 Penna with the .277 | 140gr | Winchester FailSafe 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.