Load Specifications
Load data in caliber 7 x 44 Penna with .277 | 150gr | Prvi Partizan SP bullet and 61 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% | 56,608 psi | 89% | 2146 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 44,904 psi | 70% | 2093 fps | 99.8% |
| Accurate 2460ᴾ | <<locked>> | 100% | 50,154 psi | 79% | 2178 fps | 98.7% |
| Accurate 2495ᴾ | <<locked>> | 100% | 33,112 psi | 52% | 1998 fps | 98.7% |
| Accurate 2520ᴾ | <<locked>> | 100% | 41,133 psi | 64% | 2110 fps | 96.8% |
| Accurate 2520ᴾ | <<locked>> | 100% | 41,133 psi | 64% | 2110 fps | 96.8% |
| Accurate 5744 | <<locked>> | 82% | 56,057 psi | 88% | 2149 fps | 100% |
| Accurate LT-30 | <<locked>> | 98% | 56,304 psi | 88% | 2142 fps | 99.9% |
| Accurate LT-32 | <<locked>> | 98% | 56,869 psi | 89% | 2149 fps | 99% |
| ADI APS 450 | <<locked>> | 82% | 56,927 psi | 89% | 1572 fps | 100% |
| ADI AR 2205 | <<locked>> | 84% | 55,854 psi | 88% | 2024 fps | 100% |
| ADI AR 2207 | <<locked>> | 96% | 55,158 psi | 86% | 2172 fps | 100% |
| ADI AR 2219ᴾ | <<locked>> | 100% | 57,653 psi | 90% | 2274 fps | 99.9% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 41,872 psi | 66% | 2119 fps | 100% |
| Alliant Power Pro 1200-Rᴾ | <<locked>> | 100% | 50,691 psi | 79% | 2257 fps | 96.4% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 51,779 psi | 81% | 2182 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 96% | 57,566 psi | 90% | 2185 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 98% | 54,795 psi | 86% | 2149 fps | 99.9% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 48,167 psi | 75% | 2103 fps | 96.9% |
| Hodgdon CFE BLK | <<locked>> | 82% | 54,143 psi | 85% | 2162 fps | 97.3% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 46,992 psi | 74% | 2152 fps | 99.2% |
| Hodgdon H335ᴾ | <<locked>> | 100% | 56,971 psi | 89% | 2274 fps | 99.5% |
| Hodgdon H4198 | <<locked>> | 96% | 54,897 psi | 86% | 2139 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,734 psi | 50% | 1243 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 35,621 psi | 56% | 2034 fps | 98% |
| IMR 4198ᴾ | <<locked>> | 100% | 54,099 psi | 85% | 2159 fps | 100% |
| IMR 4227 | <<locked>> | 90% | 55,854 psi | 88% | 2110 fps | 100% |
| Lovex D060 | <<locked>> | 84% | 56,057 psi | 88% | 2149 fps | 100% |
| Lovex D063 | <<locked>> | 84% | 57,450 psi | 90% | 2129 fps | 100% |
| Lovex D073.4 | <<locked>> | 96% | 55,288 psi | 87% | 2234 fps | 98.8% |
| Lovex D073.5ᴾ | <<locked>> | 100% | 50,357 psi | 79% | 2178 fps | 97.7% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 37,623 psi | 59% | 2057 fps | 95.9% |
| Lovex S053 | <<locked>> | 92% | 56,782 psi | 89% | 2093 fps | 100% |
| Norma 200 | <<locked>> | 98% | 55,956 psi | 88% | 2208 fps | 100% |
| Norma 202ᴾ | <<locked>> | 100% | 40,074 psi | 63% | 2067 fps | 97.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,241 psi | 49% | 1270 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 90% | 55,027 psi | 86% | 2139 fps | 100% |
| ReloadSwiss RS 40ᴾ | <<locked>> | 100% | 51,271 psi | 80% | 2188 fps | 98.2% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 44,585 psi | 70% | 2096 fps | 98% |
| Shooters World AR Plus | <<locked>> | 96% | 55,288 psi | 87% | 2234 fps | 98.8% |
| Shooters World Buffalo Rifle | <<locked>> | 84% | 56,057 psi | 88% | 2149 fps | 100% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 37,623 psi | 59% | 2057 fps | 95.9% |
| Shooters World SOCOM | <<locked>> | 84% | 57,450 psi | 90% | 2129 fps | 100% |
| Shooters World Tactical Rifleᴾ | <<locked>> | 100% | 56,898 psi | 89% | 2205 fps | 97.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 96% | 57,334 psi | 90% | 1969 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 98% | 54,041 psi | 85% | 2238 fps | 99.3% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 53,534 psi | 84% | 2192 fps | 100% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 44,512 psi | 70% | 2041 fps | 97.9% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 35,679 psi | 56% | 1923 fps | 96.9% |
| Somchem S321ᴾ | <<locked>> | 100% | 48,022 psi | 75% | 2172 fps | 96.7% |
| Somchem S335ᴾ | <<locked>> | 100% | 42,467 psi | 67% | 2041 fps | 98.4% |
| Vihtavuori N110 | <<locked>> | 86% | 56,579 psi | 89% | 2014 fps | 100% |
| Vihtavuori N120 | <<locked>> | 96% | 55,216 psi | 87% | 2129 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 50,154 psi | 79% | 2113 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 43,482 psi | 68% | 2044 fps | 99.6% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 35,708 psi | 56% | 2008 fps | 98.9% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 38,159 psi | 60% | 2011 fps | 97% |
| Vihtavuori N530ᴾ | <<locked>> | 100% | 45,121 psi | 71% | 2100 fps | 95.6% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 36,637 psi | 57% | 2001 fps | 96% |
| Winchester 748ᴾ | <<locked>> | 100% | 47,007 psi | 74% | 2178 fps | 96.9% |
| Winchester StaBALL Matchᴾ | <<locked>> | 100% | 52,286 psi | 82% | 2228 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% | 38,667 psi | 61% | 1929 fps | 99.6% |
| Accurate 2015 | <<locked>> | 82% | 26,107 psi | 41% | 1778 fps | 95.8% |
| Accurate 2460 | <<locked>> | 88% | 33,344 psi | 52% | 1936 fps | 95.1% |
| Accurate 2495 | <<locked>> | 90% | 23,931 psi | 38% | 1811 fps | 95.6% |
| Accurate 2520 | <<locked>> | 96% | 35,505 psi | 56% | 2021 fps | 95.3% |
| Accurate 2520 | <<locked>> | 96% | 35,505 psi | 56% | 2021 fps | 95.3% |
| Accurate 5744 | <<locked>> | 80% | 52,286 psi | 82% | 2106 fps | 100% |
| Accurate LT-30 | <<locked>> | 80% | 32,895 psi | 52% | 1824 fps | 96.4% |
| Accurate LT-32 | <<locked>> | 82% | 35,795 psi | 56% | 1867 fps | 95.1% |
| ADI APS 450 | <<locked>> | 80% | 54,375 psi | 85% | 1545 fps | 100% |
| ADI AR 2205 | <<locked>> | 80% | 49,095 psi | 77% | 1955 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 34,374 psi | 54% | 1913 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 30,182 psi | 47% | 1873 fps | 95.2% |
| Alliant AR-Comp | <<locked>> | 80% | 22,684 psi | 36% | 1739 fps | 96.5% |
| Alliant Power Pro 1200-R | <<locked>> | 96% | 44,411 psi | 70% | 2169 fps | 95% |
| Alliant Reloder-10x | <<locked>> | 80% | 28,340 psi | 44% | 1831 fps | 97.9% |
| Alliant Reloder-7 | <<locked>> | 80% | 35,520 psi | 56% | 1906 fps | 99.6% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 30,821 psi | 48% | 1814 fps | 96.1% |
| Hodgdon Benchmark | <<locked>> | 94% | 40,364 psi | 63% | 1995 fps | 95.1% |
| Hodgdon CFE BLK | <<locked>> | 80% | 51,213 psi | 80% | 2126 fps | 96.8% |
| Hodgdon H322 | <<locked>> | 86% | 31,067 psi | 49% | 1893 fps | 95.5% |
| Hodgdon H335 | <<locked>> | 84% | 32,982 psi | 52% | 1939 fps | 95% |
| Hodgdon H4198 | <<locked>> | 80% | 34,258 psi | 54% | 1854 fps | 96.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,235 psi | 36% | 1106 fps | 100% |
| IMR 3031 | <<locked>> | 92% | 28,456 psi | 45% | 1886 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 30,908 psi | 48% | 1831 fps | 99.1% |
| IMR 4227 | <<locked>> | 80% | 41,553 psi | 65% | 1946 fps | 100% |
| Lovex D060 | <<locked>> | 80% | 50,053 psi | 78% | 2080 fps | 100% |
| Lovex D063 | <<locked>> | 80% | 50,488 psi | 79% | 2060 fps | 100% |
| Lovex D073.4 | 19.7 gr | 84% | 36,376 psi | 57% | 1985 fps | 95.3% |
| Lovex D073.5 | <<locked>> | 92% | 38,087 psi | 60% | 2014 fps | 95% |
| Lovex D073.6 | <<locked>> | 98% | 35,505 psi | 56% | 2021 fps | 95.3% |
| Lovex S053 | <<locked>> | 80% | 40,857 psi | 64% | 1916 fps | 100% |
| Norma 200 | <<locked>> | 80% | 31,981 psi | 50% | 1890 fps | 99.3% |
| Norma 202 | <<locked>> | 94% | 33,301 psi | 52% | 1952 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,974 psi | 36% | 1132 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 40,785 psi | 64% | 1972 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 37,507 psi | 59% | 1995 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 90% | 33,301 psi | 52% | 1916 fps | 95.1% |
| Shooters World AR Plus | 19.7 gr | 84% | 36,376 psi | 57% | 1985 fps | 95.3% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 50,053 psi | 78% | 2080 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 98% | 35,505 psi | 56% | 2021 fps | 95.3% |
| Shooters World SOCOM | <<locked>> | 80% | 50,488 psi | 79% | 2060 fps | 100% |
| Shooters World Tactical Rifle | <<locked>> | 94% | 46,224 psi | 72% | 2080 fps | 95.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 38,377 psi | 60% | 1768 fps | 100% |
| SNPE Vectan SP 10 | 19.6 gr | 84% | 34,055 psi | 53% | 1952 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 29,051 psi | 46% | 1824 fps | 95.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 34,693 psi | 54% | 1893 fps | 95.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 31,850 psi | 50% | 1857 fps | 95.7% |
| Somchem S321 | <<locked>> | 96% | 42,235 psi | 66% | 2093 fps | 95.3% |
| Somchem S335 | <<locked>> | 90% | 31,720 psi | 50% | 1867 fps | 95.7% |
| Vihtavuori N110 | <<locked>> | 80% | 47,935 psi | 75% | 1929 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 34,592 psi | 54% | 1883 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 27,441 psi | 43% | 1765 fps | 97.2% |
| Vihtavuori N133 | <<locked>> | 82% | 25,744 psi | 40% | 1732 fps | 95.1% |
| Vihtavuori N135 | <<locked>> | 88% | 25,005 psi | 39% | 1788 fps | 95.3% |
| Vihtavuori N140 | <<locked>> | 94% | 31,908 psi | 50% | 1900 fps | 95% |
| Vihtavuori N530 | <<locked>> | 98% | 42,554 psi | 67% | 2067 fps | 95% |
| Vihtavuori N540 | <<locked>> | 98% | 34,693 psi | 54% | 1969 fps | 95.4% |
| Winchester 748 | <<locked>> | 96% | 41,452 psi | 65% | 2100 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 98% | 48,646 psi | 76% | 2185 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 83 powders for 7 x 44 Penna loaded with the .277 | 150gr | Prvi Partizan SP. ADI AR 2219 delivers the highest muzzle velocity at 2,274 fps; across all powders the maximum-charge window runs from 1,243 fps to 2,274 fps. Accurate 2015 gives the best case fill at 100 %, and 83 of the 83 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 49–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.277" calls for a 1:12.0 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 | Prvi Partizan SP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2206H, Alliant Reloder- TS 15.5, Hodgdon CFE223 burn incompletely and react more sensitively to barrel length and temperature. Hodgdon TrailBoss 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.