Load Specifications
Load data in caliber 7 x 44 Penna with .277 | 150gr | Norma Semi Soft Point bullet and 57 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>> | 92% | 55,274 psi | 87% | 2119 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 43,540 psi | 68% | 2064 fps | 99.6% |
| Accurate 2230 | <<locked>> | 98% | 57,711 psi | 90% | 2251 fps | 95.7% |
| Accurate 2460ᴾ | <<locked>> | 100% | 48,211 psi | 76% | 2142 fps | 98.3% |
| Accurate 2495ᴾ | <<locked>> | 100% | 31,937 psi | 50% | 1969 fps | 98.3% |
| Accurate 2520ᴾ | <<locked>> | 100% | 39,479 psi | 62% | 2073 fps | 96.2% |
| Accurate 2520ᴾ | <<locked>> | 100% | 39,479 psi | 62% | 2073 fps | 96.2% |
| Accurate 5744 | <<locked>> | 82% | 55,114 psi | 86% | 2126 fps | 100% |
| Accurate LT-30 | <<locked>> | 98% | 55,738 psi | 87% | 2123 fps | 99.8% |
| Accurate LT-32 | <<locked>> | 98% | 56,347 psi | 88% | 2129 fps | 98.8% |
| ADI APS 450 | <<locked>> | 82% | 55,999 psi | 88% | 1552 fps | 100% |
| ADI AR 2205 | <<locked>> | 84% | 54,911 psi | 86% | 2005 fps | 100% |
| ADI AR 2207 | <<locked>> | 98% | 57,595 psi | 90% | 2185 fps | 100% |
| ADI AR 2219ᴾ | <<locked>> | 100% | 56,405 psi | 88% | 2247 fps | 99.8% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 40,756 psi | 64% | 2093 fps | 100% |
| Alliant Power Pro 1200-Rᴾ | <<locked>> | 100% | 49,356 psi | 77% | 2224 fps | 95.9% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 51,068 psi | 80% | 2165 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 96% | 56,884 psi | 89% | 2165 fps | 100% |
| Baschieri & Pellagri 106ᴾ | <<locked>> | 100% | 56,826 psi | 89% | 2159 fps | 99.9% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 47,688 psi | 75% | 2087 fps | 96.6% |
| Hodgdon CFE BLK | <<locked>> | 84% | 56,550 psi | 89% | 2175 fps | 97.5% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 45,774 psi | 72% | 2123 fps | 98.9% |
| Hodgdon H335ᴾ | <<locked>> | 100% | 55,085 psi | 86% | 2241 fps | 99.3% |
| Hodgdon H4198 | <<locked>> | 98% | 57,421 psi | 90% | 2152 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,357 psi | 49% | 1230 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 35,128 psi | 55% | 2011 fps | 97.6% |
| IMR 4198ᴾ | <<locked>> | 100% | 53,301 psi | 84% | 2139 fps | 100% |
| IMR 4227 | <<locked>> | 90% | 54,897 psi | 86% | 2090 fps | 100% |
| Lovex D060 | <<locked>> | 84% | 55,114 psi | 86% | 2126 fps | 100% |
| Lovex D063 | <<locked>> | 84% | 55,854 psi | 88% | 2103 fps | 100% |
| Lovex D073.4 | <<locked>> | 96% | 53,940 psi | 85% | 2208 fps | 98.5% |
| Lovex D073.5ᴾ | <<locked>> | 100% | 48,472 psi | 76% | 2146 fps | 97.2% |
| Lovex S053 | <<locked>> | 92% | 55,796 psi | 87% | 2073 fps | 100% |
| Norma 200ᴾ | <<locked>> | 100% | 57,725 psi | 90% | 2215 fps | 100% |
| Norma 202ᴾ | <<locked>> | 100% | 39,001 psi | 61% | 2037 fps | 96.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 30,879 psi | 48% | 1257 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 92% | 57,348 psi | 90% | 2152 fps | 100% |
| ReloadSwiss RS 40ᴾ | <<locked>> | 100% | 50,082 psi | 78% | 2159 fps | 97.9% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 43,294 psi | 68% | 2067 fps | 97.6% |
| Shooters World AR Plus | <<locked>> | 96% | 53,940 psi | 85% | 2208 fps | 98.5% |
| Shooters World Buffalo Rifle | <<locked>> | 84% | 55,114 psi | 86% | 2126 fps | 100% |
| Shooters World SOCOM | <<locked>> | 84% | 55,854 psi | 88% | 2103 fps | 100% |
| Shooters World Tactical Rifleᴾ | <<locked>> | 100% | 55,753 psi | 87% | 2178 fps | 96.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 96% | 56,304 psi | 88% | 1952 fps | 100% |
| SNPE Vectan SP 10ᴾ | <<locked>> | 100% | 56,028 psi | 88% | 2244 fps | 99.3% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 52,069 psi | 82% | 2165 fps | 99.9% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 43,294 psi | 68% | 2011 fps | 97.5% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 34,737 psi | 54% | 1896 fps | 96.4% |
| Somchem S321ᴾ | <<locked>> | 100% | 47,050 psi | 74% | 2146 fps | 96.2% |
| Somchem S335ᴾ | <<locked>> | 100% | 41,336 psi | 65% | 2011 fps | 98.1% |
| Vihtavuori N110 | <<locked>> | 86% | 55,274 psi | 87% | 1995 fps | 100% |
| Vihtavuori N120 | <<locked>> | 98% | 57,725 psi | 90% | 2142 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 48,805 psi | 76% | 2087 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 42,308 psi | 66% | 2018 fps | 99.4% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 34,635 psi | 54% | 1978 fps | 98.5% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 37,231 psi | 58% | 1985 fps | 96.6% |
| Winchester 748ᴾ | <<locked>> | 100% | 46,079 psi | 72% | 2152 fps | 96.5% |
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% | 37,405 psi | 59% | 1900 fps | 99.4% |
| Accurate 2015 | <<locked>> | 82% | 25,382 psi | 40% | 1752 fps | 95.3% |
| Accurate 2230 | <<locked>> | 96% | 53,417 psi | 84% | 2205 fps | 95% |
| Accurate 2460 | <<locked>> | 90% | 34,693 psi | 54% | 1952 fps | 95.3% |
| Accurate 2495 | <<locked>> | 92% | 24,395 psi | 38% | 1818 fps | 95.7% |
| Accurate 2520 | <<locked>> | 98% | 37,188 psi | 58% | 2037 fps | 95.6% |
| Accurate 2520 | <<locked>> | 98% | 37,188 psi | 58% | 2037 fps | 95.6% |
| Accurate 5744 | <<locked>> | 80% | 51,982 psi | 81% | 2090 fps | 100% |
| Accurate LT-30 | <<locked>> | 80% | 32,677 psi | 51% | 1808 fps | 96.2% |
| Accurate LT-32 | <<locked>> | 84% | 37,144 psi | 58% | 1880 fps | 95.2% |
| ADI APS 450 | <<locked>> | 80% | 54,259 psi | 85% | 1532 fps | 100% |
| ADI AR 2205 | <<locked>> | 80% | 48,892 psi | 77% | 1942 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 33,431 psi | 52% | 1890 fps | 100% |
| ADI AR 2219 | 18.1 gr | 82% | 31,386 psi | 49% | 1886 fps | 95.4% |
| Alliant AR-Comp | <<locked>> | 80% | 22,147 psi | 35% | 1713 fps | 95.9% |
| Alliant Power Pro 1200-R | <<locked>> | 98% | 45,803 psi | 72% | 2178 fps | 95.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 27,557 psi | 43% | 1804 fps | 97.5% |
| Alliant Reloder-7 | <<locked>> | 80% | 34,708 psi | 54% | 1883 fps | 99.4% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 30,313 psi | 48% | 1795 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 96% | 42,105 psi | 66% | 2008 fps | 95.3% |
| Hodgdon CFE BLK | <<locked>> | 80% | 49,632 psi | 78% | 2090 fps | 96.3% |
| Hodgdon H322 | <<locked>> | 88% | 32,256 psi | 51% | 1906 fps | 95.8% |
| Hodgdon H335 | <<locked>> | 86% | 34,882 psi | 55% | 1962 fps | 95.5% |
| Hodgdon H4198 | <<locked>> | 80% | 33,982 psi | 53% | 1837 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,279 psi | 36% | 1102 fps | 100% |
| IMR 3031 | <<locked>> | 94% | 29,501 psi | 46% | 1900 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 30,124 psi | 47% | 1804 fps | 98.8% |
| IMR 4227 | <<locked>> | 80% | 41,176 psi | 65% | 1932 fps | 100% |
| Lovex D060 | <<locked>> | 80% | 49,066 psi | 77% | 2054 fps | 100% |
| Lovex D063 | <<locked>> | 80% | 48,950 psi | 77% | 2031 fps | 100% |
| Lovex D073.4 | 19.7 gr | 86% | 37,942 psi | 59% | 1998 fps | 95.5% |
| Lovex D073.5 | <<locked>> | 94% | 39,885 psi | 63% | 2031 fps | 95.3% |
| Lovex S053 | <<locked>> | 80% | 39,856 psi | 62% | 1893 fps | 100% |
| Norma 200 | <<locked>> | 80% | 31,140 psi | 49% | 1864 fps | 99% |
| Norma 202 | <<locked>> | 96% | 34,693 psi | 54% | 1969 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,018 psi | 36% | 1125 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 39,885 psi | 63% | 1949 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 39,117 psi | 61% | 2011 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 92% | 34,461 psi | 54% | 1926 fps | 95.3% |
| Shooters World AR Plus | 19.7 gr | 86% | 37,942 psi | 59% | 1998 fps | 95.5% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 49,066 psi | 77% | 2054 fps | 100% |
| Shooters World SOCOM | <<locked>> | 80% | 48,950 psi | 77% | 2031 fps | 100% |
| Shooters World Tactical Rifle | <<locked>> | 96% | 48,588 psi | 76% | 2096 fps | 95.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 37,304 psi | 58% | 1745 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 33,489 psi | 52% | 1932 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 28,747 psi | 45% | 1808 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 34,069 psi | 53% | 1870 fps | 95.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 30,922 psi | 48% | 1827 fps | 95% |
| Somchem S321 | <<locked>> | 98% | 43,685 psi | 68% | 2103 fps | 95.5% |
| Somchem S335 | <<locked>> | 90% | 30,705 psi | 48% | 1837 fps | 95.1% |
| Vihtavuori N110 | <<locked>> | 80% | 46,630 psi | 73% | 1906 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 33,663 psi | 53% | 1860 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 27,093 psi | 42% | 1749 fps | 96.9% |
| Vihtavuori N133 | <<locked>> | 84% | 26,672 psi | 42% | 1745 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 90% | 25,904 psi | 41% | 1801 fps | 95.5% |
| Vihtavuori N140 | <<locked>> | 96% | 33,243 psi | 52% | 1916 fps | 95.3% |
| Winchester 748 | <<locked>> | 96% | 40,567 psi | 64% | 2070 fps | 95% |
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 80 powders for 7 x 44 Penna loaded with the .277 | 150gr | Norma Semi Soft Point. Accurate 2230 delivers the highest muzzle velocity at 2,251 fps; across all powders the maximum-charge window runs from 1,230 fps to 2,251 fps. Accurate 2015 gives the best case fill at 100 %, and 80 of the 80 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 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, ADI AR 2219 rank at the top here: for 7 x 44 Penna with the .277 | 150gr | Norma Semi Soft Point 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 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.