Load Specifications
Load data in caliber 7 x 44 Penna with .277 | 150gr | Woodleigh PP SN bullet and 58 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% | 55,187 psi | 86% | 2116 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 43,381 psi | 68% | 2060 fps | 99.6% |
| Accurate 2460ᴾ | <<locked>> | 100% | 50,575 psi | 79% | 2150 fps | 97.2% |
| Accurate 2495ᴾ | <<locked>> | 100% | 31,734 psi | 50% | 1962 fps | 98.2% |
| Accurate 2520ᴾ | <<locked>> | 100% | 39,334 psi | 62% | 2070 fps | 96.1% |
| Accurate 5744 | <<locked>> | 82% | 54,839 psi | 86% | 2119 fps | 100% |
| Accurate LT-30 | <<locked>> | 98% | 55,637 psi | 87% | 2119 fps | 99.8% |
| Accurate LT-32 | <<locked>> | 98% | 56,202 psi | 88% | 2126 fps | 98.8% |
| Accurate No. 11 FS | <<locked>> | 82% | 57,667 psi | 90% | 2094 fps | 100% |
| ADI APS 450 | <<locked>> | 82% | 56,420 psi | 88% | 1552 fps | 100% |
| ADI AR 2205 | <<locked>> | 84% | 54,665 psi | 86% | 1999 fps | 100% |
| ADI AR 2207 | <<locked>> | 96% | 54,056 psi | 85% | 2148 fps | 100% |
| ADI AR 2219ᴾ | <<locked>> | 100% | 56,275 psi | 88% | 2233 fps | 99.7% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 41,568 psi | 65% | 2087 fps | 100% |
| Alliant Power Pro 1200-Rᴾ | <<locked>> | 100% | 49,226 psi | 77% | 2221 fps | 95.9% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 51,445 psi | 81% | 2159 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 96% | 55,854 psi | 88% | 2153 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 98% | 52,997 psi | 83% | 2116 fps | 99.7% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 48,008 psi | 75% | 2072 fps | 96.4% |
| Hodgdon CFE BLK | <<locked>> | 84% | 56,260 psi | 88% | 2169 fps | 97.4% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 46,354 psi | 73% | 2117 fps | 98.9% |
| Hodgdon H335ᴾ | <<locked>> | 100% | 55,898 psi | 88% | 2237 fps | 99.2% |
| Hodgdon H4198 | <<locked>> | 96% | 53,983 psi | 85% | 2114 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,923 psi | 50% | 1232 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 35,317 psi | 55% | 2006 fps | 97.5% |
| IMR 4198ᴾ | <<locked>> | 100% | 54,621 psi | 86% | 2135 fps | 100% |
| IMR 4227 | <<locked>> | 90% | 54,636 psi | 86% | 2085 fps | 100% |
| Lovex D060 | <<locked>> | 84% | 54,839 psi | 86% | 2119 fps | 100% |
| Lovex D063 | <<locked>> | 84% | 55,666 psi | 87% | 2100 fps | 100% |
| Lovex D073.4 | <<locked>> | 98% | 57,261 psi | 90% | 2238 fps | 98.9% |
| Lovex D073.5ᴾ | <<locked>> | 100% | 48,776 psi | 76% | 2141 fps | 97.1% |
| Lovex S053 | <<locked>> | 92% | 55,535 psi | 87% | 2070 fps | 100% |
| Norma 200ᴾ | <<locked>> | 100% | 57,508 psi | 90% | 2210 fps | 100% |
| Norma 202ᴾ | <<locked>> | 100% | 39,929 psi | 63% | 2033 fps | 96.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,952 psi | 50% | 1258 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 92% | 57,159 psi | 90% | 2147 fps | 100% |
| ReloadSwiss RS 40ᴾ | <<locked>> | 100% | 50,444 psi | 79% | 2156 fps | 97.8% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 43,816 psi | 69% | 2061 fps | 97.5% |
| Shooters World AR Plus | <<locked>> | 98% | 57,261 psi | 90% | 2238 fps | 98.9% |
| Shooters World Buffalo Rifle | <<locked>> | 84% | 54,839 psi | 86% | 2119 fps | 100% |
| Shooters World SOCOM | <<locked>> | 84% | 55,666 psi | 87% | 2100 fps | 100% |
| Shooters World Tactical Rifleᴾ | <<locked>> | 100% | 55,666 psi | 87% | 2164 fps | 96.6% |
| SNPE Vectan BA6 1/2 | <<locked>> | 96% | 56,014 psi | 88% | 1946 fps | 100% |
| SNPE Vectan SP 10ᴾ | <<locked>> | 100% | 56,637 psi | 89% | 2241 fps | 99.3% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 51,880 psi | 81% | 2159 fps | 99.9% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 43,250 psi | 68% | 2006 fps | 97.4% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 35,331 psi | 55% | 1891 fps | 96.3% |
| Somchem S321ᴾ | <<locked>> | 100% | 48,095 psi | 75% | 2142 fps | 96.1% |
| Somchem S335ᴾ | <<locked>> | 100% | 41,365 psi | 65% | 2008 fps | 98% |
| Vihtavuori N110 | <<locked>> | 86% | 55,680 psi | 87% | 2000 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 56,942 psi | 89% | 2123 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 49,052 psi | 77% | 2073 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 39,537 psi | 62% | 1973 fps | 98.9% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 34,505 psi | 54% | 1975 fps | 98.5% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 36,680 psi | 57% | 1970 fps | 96.3% |
| Vihtavuori N530ᴾ | <<locked>> | 100% | 47,036 psi | 74% | 2118 fps | 95.8% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 37,333 psi | 59% | 1992 fps | 95.7% |
| Winchester 748ᴾ | <<locked>> | 100% | 46,601 psi | 73% | 2149 fps | 96.4% |
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>> | 80% | 37,217 psi | 58% | 1896 fps | 99.3% |
| Accurate 2015 | <<locked>> | 82% | 25,179 psi | 39% | 1745 fps | 95.1% |
| Accurate 2460 | <<locked>> | 94% | 39,697 psi | 62% | 2025 fps | 95.1% |
| Accurate 2495 | <<locked>> | 92% | 24,236 psi | 38% | 1811 fps | 95.5% |
| Accurate 2520 | <<locked>> | 98% | 37,072 psi | 58% | 2034 fps | 95.5% |
| Accurate 5744 | <<locked>> | 80% | 51,735 psi | 81% | 2084 fps | 100% |
| Accurate LT-30 | <<locked>> | 80% | 32,474 psi | 51% | 1801 fps | 96% |
| Accurate LT-32 | <<locked>> | 84% | 36,956 psi | 58% | 1873 fps | 95.1% |
| Accurate No. 11 FS | <<locked>> | 80% | 54,404 psi | 85% | 2063 fps | 100% |
| ADI APS 450 | <<locked>> | 80% | 54,650 psi | 86% | 1535 fps | 100% |
| ADI AR 2205 | <<locked>> | 80% | 48,631 psi | 76% | 1937 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 33,185 psi | 52% | 1882 fps | 100% |
| ADI AR 2219 | <<locked>> | 82% | 31,241 psi | 49% | 1881 fps | 95.3% |
| Alliant AR-Comp | <<locked>> | 80% | 22,321 psi | 35% | 1715 fps | 96% |
| Alliant Power Pro 1200-R | <<locked>> | 98% | 45,643 psi | 72% | 2172 fps | 95% |
| Alliant Reloder-10x | <<locked>> | 80% | 27,383 psi | 43% | 1799 fps | 97.4% |
| Alliant Reloder-7 | <<locked>> | 80% | 34,954 psi | 55% | 1885 fps | 99.4% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 30,182 psi | 47% | 1790 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 96% | 41,959 psi | 66% | 2003 fps | 95.2% |
| Hodgdon CFE BLK | <<locked>> | 80% | 49,429 psi | 77% | 2087 fps | 96.2% |
| Hodgdon H322 | <<locked>> | 88% | 32,111 psi | 50% | 1899 fps | 95.6% |
| Hodgdon H335 | <<locked>> | 86% | 34,258 psi | 54% | 1947 fps | 95.2% |
| Hodgdon H4198 | <<locked>> | 80% | 33,808 psi | 53% | 1830 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,887 psi | 36% | 1092 fps | 100% |
| IMR 3031 | <<locked>> | 94% | 29,370 psi | 46% | 1893 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 29,921 psi | 47% | 1798 fps | 98.7% |
| IMR 4227 | <<locked>> | 80% | 40,959 psi | 64% | 1925 fps | 100% |
| Lovex D060 | <<locked>> | 80% | 48,776 psi | 76% | 2049 fps | 100% |
| Lovex D063 | <<locked>> | 80% | 48,733 psi | 76% | 2024 fps | 100% |
| Lovex D073.4 | 19.6 gr | 86% | 37,768 psi | 59% | 1995 fps | 95.4% |
| Lovex D073.5 | <<locked>> | 94% | 39,189 psi | 61% | 2017 fps | 95% |
| Lovex S053 | <<locked>> | 80% | 39,581 psi | 62% | 1888 fps | 100% |
| Norma 200 | <<locked>> | 80% | 30,937 psi | 48% | 1858 fps | 99% |
| Norma 202 | <<locked>> | 96% | 34,563 psi | 54% | 1962 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,626 psi | 35% | 1118 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 39,668 psi | 62% | 1944 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 38,406 psi | 60% | 1995 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 92% | 34,316 psi | 54% | 1921 fps | 95.1% |
| Shooters World AR Plus | 19.6 gr | 86% | 37,768 psi | 59% | 1995 fps | 95.4% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 48,776 psi | 76% | 2049 fps | 100% |
| Shooters World SOCOM | <<locked>> | 80% | 48,733 psi | 76% | 2024 fps | 100% |
| Shooters World Tactical Rifle | <<locked>> | 96% | 47,790 psi | 75% | 2084 fps | 95.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 37,594 psi | 59% | 1749 fps | 100% |
| SNPE Vectan SP 10 | 19.5 gr | 86% | 35,259 psi | 55% | 1962 fps | 95.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 28,572 psi | 45% | 1801 fps | 95.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 33,881 psi | 53% | 1865 fps | 95% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 33,228 psi | 52% | 1856 fps | 95.6% |
| Somchem S321 | <<locked>> | 98% | 43,584 psi | 68% | 2098 fps | 95.4% |
| Somchem S335 | <<locked>> | 90% | 30,530 psi | 48% | 1832 fps | 95% |
| Vihtavuori N110 | <<locked>> | 80% | 46,891 psi | 73% | 1912 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 31,067 psi | 49% | 1814 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 26,397 psi | 41% | 1733 fps | 96.6% |
| Vihtavuori N133 | <<locked>> | 86% | 26,107 psi | 41% | 1732 fps | 95% |
| Vihtavuori N135 | <<locked>> | 90% | 25,773 psi | 40% | 1795 fps | 95.3% |
| Vihtavuori N140 | <<locked>> | 96% | 32,503 psi | 51% | 1900 fps | 95% |
| Vihtavuori N530 | <<locked>> | 98% | 42,960 psi | 67% | 2072 fps | 95% |
| Vihtavuori N540 | <<locked>> | 98% | 34,447 psi | 54% | 1957 fps | 95.1% |
| Winchester 748 | <<locked>> | 98% | 42,815 psi | 67% | 2103 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 58 powders for 7 x 44 Penna loaded with the .277 | 150gr | Woodleigh PP SN. SNPE Vectan SP 10 delivers the highest muzzle velocity at 2,241 fps; across all powders the maximum-charge window runs from 1,232 fps to 2,241 fps. Accurate 2015 gives the best case fill at 100 %, and 58 of the 58 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 50–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.277" calls for a 1:11.5 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 | Woodleigh PP SN they combine a high case fill with complete burn and sit in the upper velocity band. 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.