Load Specifications
Load data in caliber 7 x 44 Penna with .277 | 150gr | Swift A-Frame bullet and 54 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 SNPE Vectan SP 10.
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>> | 92% | 54,375 psi | 85% | 2103 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 42,598 psi | 67% | 2044 fps | 99.5% |
| Accurate 2460ᴾ | <<locked>> | 100% | 47,398 psi | 74% | 2123 fps | 98.1% |
| Accurate 2495ᴾ | <<locked>> | 100% | 31,038 psi | 49% | 1946 fps | 97.9% |
| Accurate 2520ᴾ | <<locked>> | 100% | 40,727 psi | 64% | 2073 fps | 96.4% |
| Accurate LT-30 | <<locked>> | 98% | 54,781 psi | 86% | 2103 fps | 99.7% |
| Accurate LT-32 | <<locked>> | 98% | 55,405 psi | 87% | 2110 fps | 98.6% |
| Accurate No. 11 FS | <<locked>> | 82% | 56,623 psi | 89% | 2077 fps | 100% |
| ADI APS 450 | <<locked>> | 82% | 56,579 psi | 89% | 1549 fps | 100% |
| ADI AR 2205 | <<locked>> | 86% | 56,927 psi | 89% | 2014 fps | 100% |
| ADI AR 2207 | <<locked>> | 98% | 56,362 psi | 88% | 2162 fps | 100% |
| ADI AR 2219ᴾ | <<locked>> | 100% | 54,708 psi | 86% | 2218 fps | 99.7% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 39,885 psi | 63% | 2070 fps | 100% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 49,980 psi | 78% | 2142 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 96% | 55,753 psi | 87% | 2146 fps | 100% |
| Baschieri & Pellagri 106ᴾ | <<locked>> | 100% | 56,188 psi | 88% | 2142 fps | 99.8% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 46,253 psi | 72% | 2057 fps | 96.1% |
| Hodgdon CFE BLK | <<locked>> | 84% | 56,173 psi | 88% | 2159 fps | 97.2% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 49,211 psi | 77% | 2156 fps | 99.2% |
| Hodgdon H335ᴾ | <<locked>> | 100% | 50,531 psi | 79% | 2178 fps | 98.7% |
| Hodgdon H4198 | <<locked>> | 96% | 57,174 psi | 90% | 2139 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,473 psi | 49% | 1224 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 38,101 psi | 60% | 2054 fps | 98.2% |
| IMR 4198ᴾ | <<locked>> | 100% | 52,228 psi | 82% | 2119 fps | 100% |
| IMR 4227 | <<locked>> | 92% | 56,971 psi | 89% | 2100 fps | 100% |
| Lovex D060 | <<locked>> | 86% | 57,014 psi | 89% | 2136 fps | 100% |
| Lovex D063 | <<locked>> | 82% | 57,392 psi | 90% | 2123 fps | 100% |
| Lovex D073.4 | <<locked>> | 98% | 56,478 psi | 89% | 2221 fps | 98.7% |
| Lovex D073.5ᴾ | <<locked>> | 100% | 47,718 psi | 75% | 2126 fps | 96.8% |
| Lovex S053 | <<locked>> | 92% | 55,303 psi | 87% | 2060 fps | 100% |
| Norma 200ᴾ | <<locked>> | 100% | 56,666 psi | 89% | 2195 fps | 100% |
| Norma 202ᴾ | <<locked>> | 100% | 38,203 psi | 60% | 2014 fps | 96.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 30,995 psi | 49% | 1250 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 92% | 57,043 psi | 89% | 2139 fps | 100% |
| ReloadSwiss RS 40ᴾ | <<locked>> | 100% | 49,313 psi | 77% | 2139 fps | 97.6% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 42,380 psi | 66% | 2044 fps | 97.2% |
| Shooters World AR Plus | <<locked>> | 98% | 56,478 psi | 89% | 2221 fps | 98.7% |
| Shooters World Blackout | <<locked>> | 82% | 57,392 psi | 90% | 2123 fps | 100% |
| Shooters World Buffalo Rifle | <<locked>> | 86% | 57,014 psi | 89% | 2136 fps | 100% |
| Shooters World SOCOM | <<locked>> | 84% | 55,550 psi | 87% | 2090 fps | 100% |
| Shooters World Tactical Rifleᴾ | <<locked>> | 100% | 54,157 psi | 85% | 2149 fps | 96.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 96% | 55,738 psi | 87% | 1936 fps | 100% |
| SNPE Vectan SP 10ᴾ | <<locked>> | 100% | 55,187 psi | 86% | 2224 fps | 99.1% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 51,010 psi | 80% | 2142 fps | 99.8% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 42,409 psi | 66% | 1988 fps | 97.1% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 34,069 psi | 53% | 1873 fps | 95.9% |
| Somchem S321ᴾ | <<locked>> | 100% | 46,296 psi | 73% | 2126 fps | 95.9% |
| Somchem S335ᴾ | <<locked>> | 100% | 40,596 psi | 64% | 1991 fps | 97.8% |
| Vihtavuori N110 | <<locked>> | 86% | 54,549 psi | 85% | 1978 fps | 100% |
| Vihtavuori N120 | <<locked>> | 98% | 56,449 psi | 88% | 2123 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 47,834 psi | 75% | 2067 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 41,452 psi | 65% | 1995 fps | 99.2% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 33,866 psi | 53% | 1955 fps | 98.2% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 36,535 psi | 57% | 1962 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 1680 | <<locked>> | 80% | 37,043 psi | 58% | 1886 fps | 99.2% |
| Accurate 2015 | <<locked>> | 84% | 26,092 psi | 41% | 1762 fps | 95.5% |
| Accurate 2460 | <<locked>> | 92% | 36,013 psi | 56% | 1962 fps | 95.5% |
| Accurate 2495 | <<locked>> | 92% | 23,975 psi | 38% | 1801 fps | 95.3% |
| Accurate 2520 | <<locked>> | 98% | 38,319 psi | 60% | 2037 fps | 95.7% |
| Accurate LT-30 | <<locked>> | 80% | 31,763 psi | 50% | 1781 fps | 95.6% |
| Accurate LT-32 | <<locked>> | 86% | 38,972 psi | 61% | 1896 fps | 95.6% |
| Accurate No. 11 FS | <<locked>> | 80% | 53,345 psi | 84% | 2047 fps | 100% |
| ADI APS 450 | <<locked>> | 80% | 53,911 psi | 84% | 1519 fps | 100% |
| ADI AR 2205 | <<locked>> | 80% | 47,659 psi | 75% | 1919 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 32,822 psi | 51% | 1870 fps | 100% |
| ADI AR 2219 | <<locked>> | 84% | 32,880 psi | 52% | 1906 fps | 95.8% |
| Alliant AR-Comp | <<locked>> | 80% | 21,828 psi | 34% | 1693 fps | 95.4% |
| Alliant Reloder-10x | <<locked>> | 80% | 27,050 psi | 42% | 1788 fps | 97.2% |
| Alliant Reloder-7 | <<locked>> | 80% | 34,185 psi | 54% | 1867 fps | 99.2% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 29,588 psi | 46% | 1772 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 98% | 43,729 psi | 69% | 2021 fps | 95.5% |
| Hodgdon CFE BLK | <<locked>> | 80% | 49,182 psi | 77% | 2073 fps | 96% |
| Hodgdon H322 | <<locked>> | 86% | 31,981 psi | 50% | 1890 fps | 95.4% |
| Hodgdon H335 | <<locked>> | 88% | 34,171 psi | 54% | 1939 fps | 95% |
| Hodgdon H4198 | <<locked>> | 80% | 35,070 psi | 55% | 1847 fps | 96% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,684 psi | 36% | 1083 fps | 100% |
| IMR 3031 | <<locked>> | 92% | 29,675 psi | 47% | 1893 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 29,646 psi | 46% | 1785 fps | 98.5% |
| IMR 4227 | <<locked>> | 80% | 39,958 psi | 63% | 1906 fps | 100% |
| Lovex D060 | <<locked>> | 80% | 48,457 psi | 76% | 2037 fps | 100% |
| Lovex D063 | <<locked>> | 80% | 54,099 psi | 85% | 2090 fps | 100% |
| Lovex D073.4 | 19.3 gr | 86% | 36,970 psi | 58% | 1975 fps | 95% |
| Lovex D073.5 | <<locked>> | 96% | 41,568 psi | 65% | 2044 fps | 95.5% |
| Lovex S053 | <<locked>> | 80% | 39,218 psi | 61% | 1877 fps | 100% |
| Norma 200 | <<locked>> | 80% | 30,647 psi | 48% | 1847 fps | 98.8% |
| Norma 202 | <<locked>> | 96% | 33,953 psi | 53% | 1942 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,974 psi | 36% | 1119 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 39,363 psi | 62% | 1932 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 38,334 psi | 60% | 1988 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 94% | 35,650 psi | 56% | 1939 fps | 95.4% |
| Shooters World AR Plus | 19.3 gr | 86% | 36,970 psi | 58% | 1975 fps | 95% |
| Shooters World Blackout | <<locked>> | 80% | 54,099 psi | 85% | 2090 fps | 100% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 48,457 psi | 76% | 2037 fps | 100% |
| Shooters World SOCOM | <<locked>> | 80% | 48,559 psi | 76% | 2018 fps | 100% |
| Shooters World Tactical Rifle | <<locked>> | 98% | 50,894 psi | 80% | 2113 fps | 95.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 37,173 psi | 58% | 1739 fps | 100% |
| SNPE Vectan SP 10 | 19.3 gr | 86% | 35,157 psi | 55% | 1952 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 28,311 psi | 44% | 1788 fps | 95.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 35,317 psi | 55% | 1883 fps | 95.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 32,140 psi | 50% | 1841 fps | 95.3% |
| Somchem S321 | <<locked>> | 98% | 43,004 psi | 67% | 2080 fps | 95.1% |
| Somchem S335 | <<locked>> | 92% | 32,184 psi | 50% | 1857 fps | 95.5% |
| Vihtavuori N110 | <<locked>> | 80% | 46,586 psi | 73% | 1896 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 33,069 psi | 52% | 1844 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 26,687 psi | 42% | 1732 fps | 96.6% |
| Vihtavuori N133 | <<locked>> | 86% | 27,485 psi | 43% | 1755 fps | 95.5% |
| Vihtavuori N135 | <<locked>> | 92% | 26,731 psi | 42% | 1811 fps | 95.7% |
| Vihtavuori N140 | <<locked>> | 98% | 34,548 psi | 54% | 1926 fps | 95.5% |
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 81 powders for 7 x 44 Penna loaded with the .277 | 150gr | Swift A-Frame. SNPE Vectan SP 10 delivers the highest muzzle velocity at 2,224 fps; across all powders the maximum-charge window runs from 1,224 fps to 2,224 fps. Accurate 2015 gives the best case fill at 100 %, and 81 of the 81 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 150.0 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, SNPE Vectan SP 10 rank at the top here: for 7 x 44 Penna with the .277 | 150gr | Swift A-Frame they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2200, Accurate 4064, ADI AR 2206H burn incompletely and react more sensitively to barrel length and temperature. Hodgdon TrailBoss, ReloadSwiss RS 14 stay subsonic at start load. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.