Load Specifications
Load data in caliber 7 x 44 Penna with .277 | 150gr | Speer Deep Curl Soft Point bullet and 56 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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 92% | 56,173 psi | 88% | 2139 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 44,498 psi | 70% | 2087 fps | 99.7% |
| Accurate 2460ᴾ | <<locked>> | 100% | 49,821 psi | 78% | 2172 fps | 98.7% |
| Accurate 2495ᴾ | <<locked>> | 100% | 32,793 psi | 51% | 1991 fps | 98.6% |
| Accurate 2520ᴾ | <<locked>> | 100% | 42,946 psi | 67% | 2123 fps | 97.2% |
| Accurate LT-30 | <<locked>> | 98% | 56,681 psi | 89% | 2142 fps | 99.9% |
| Accurate LT-32 | <<locked>> | 98% | 57,290 psi | 90% | 2152 fps | 99.1% |
| ADI APS 450 | <<locked>> | 82% | 56,304 psi | 88% | 1565 fps | 100% |
| ADI AR 2205 | <<locked>> | 84% | 55,347 psi | 87% | 2018 fps | 100% |
| ADI AR 2207 | <<locked>> | 96% | 55,463 psi | 87% | 2172 fps | 100% |
| ADI AR 2219ᴾ | <<locked>> | 100% | 57,188 psi | 90% | 2267 fps | 99.9% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 41,553 psi | 65% | 2113 fps | 100% |
| Alliant Power Pro 1200-Rᴾ | <<locked>> | 100% | 50,343 psi | 79% | 2251 fps | 96.3% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 52,098 psi | 82% | 2185 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 96% | 57,145 psi | 90% | 2178 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 98% | 54,491 psi | 85% | 2146 fps | 99.9% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 48,515 psi | 76% | 2106 fps | 96.9% |
| Hodgdon CFE BLK | <<locked>> | 84% | 57,624 psi | 90% | 2198 fps | 97.8% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 51,619 psi | 81% | 2205 fps | 99.6% |
| Hodgdon H335ᴾ | <<locked>> | 100% | 52,678 psi | 83% | 2228 fps | 99.2% |
| Hodgdon H4198 | <<locked>> | 94% | 55,230 psi | 87% | 2142 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,241 psi | 49% | 1237 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 39,624 psi | 62% | 2100 fps | 98.8% |
| IMR 4198ᴾ | <<locked>> | 100% | 53,650 psi | 84% | 2152 fps | 100% |
| IMR 4227 | <<locked>> | 90% | 56,159 psi | 88% | 2113 fps | 100% |
| Lovex D060 | <<locked>> | 84% | 55,593 psi | 87% | 2142 fps | 100% |
| Lovex D073.4 | <<locked>> | 96% | 54,911 psi | 86% | 2228 fps | 98.8% |
| Lovex D073.5ᴾ | <<locked>> | 100% | 50,038 psi | 78% | 2175 fps | 97.6% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 37,884 psi | 59% | 2060 fps | 96% |
| Lovex S053 | <<locked>> | 92% | 57,145 psi | 90% | 2096 fps | 100% |
| Norma 200 | <<locked>> | 98% | 55,521 psi | 87% | 2205 fps | 100% |
| Norma 202ᴾ | <<locked>> | 100% | 39,726 psi | 62% | 2060 fps | 97.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,357 psi | 49% | 1270 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 90% | 55,405 psi | 87% | 2142 fps | 100% |
| ReloadSwiss RS 40ᴾ | <<locked>> | 100% | 50,952 psi | 80% | 2182 fps | 98.2% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 44,208 psi | 69% | 2090 fps | 97.9% |
| Shooters World AR Plus | <<locked>> | 96% | 54,911 psi | 86% | 2228 fps | 98.8% |
| Shooters World Buffalo Rifle | <<locked>> | 84% | 55,593 psi | 87% | 2142 fps | 100% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 37,884 psi | 59% | 2060 fps | 96% |
| Shooters World SOCOM | <<locked>> | 84% | 57,029 psi | 89% | 2123 fps | 100% |
| Shooters World Tactical Rifleᴾ | <<locked>> | 100% | 56,449 psi | 88% | 2198 fps | 97.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 96% | 57,624 psi | 90% | 1972 fps | 100% |
| SNPE Vectan SP 10ᴾ | <<locked>> | 100% | 57,580 psi | 90% | 2274 fps | 99.5% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 53,084 psi | 83% | 2185 fps | 99.9% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 44,164 psi | 69% | 2034 fps | 97.8% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 35,404 psi | 55% | 1919 fps | 96.8% |
| Somchem S321ᴾ | <<locked>> | 100% | 48,443 psi | 76% | 2175 fps | 96.7% |
| Somchem S335ᴾ | <<locked>> | 100% | 42,163 psi | 66% | 2034 fps | 98.3% |
| Vihtavuori N110 | <<locked>> | 86% | 56,927 psi | 89% | 2018 fps | 100% |
| Vihtavuori N120 | <<locked>> | 96% | 55,608 psi | 87% | 2133 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 49,777 psi | 78% | 2106 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 43,149 psi | 68% | 2037 fps | 99.5% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 35,404 psi | 55% | 2001 fps | 98.8% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 38,464 psi | 60% | 2014 fps | 97.1% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 36,869 psi | 58% | 2005 fps | 96.1% |
| Winchester 748ᴾ | <<locked>> | 100% | 42,902 psi | 67% | 2119 fps | 96% |
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% | 38,319 psi | 60% | 1923 fps | 99.6% |
| Accurate 2015 | <<locked>> | 80% | 24,337 psi | 38% | 1736 fps | 95% |
| Accurate 2460 | <<locked>> | 88% | 33,011 psi | 52% | 1929 fps | 95% |
| Accurate 2495 | <<locked>> | 90% | 23,685 psi | 37% | 1804 fps | 95.5% |
| Accurate 2520 | <<locked>> | 94% | 34,867 psi | 55% | 1998 fps | 95.1% |
| Accurate LT-30 | <<locked>> | 80% | 33,083 psi | 52% | 1824 fps | 96.5% |
| Accurate LT-32 | <<locked>> | 84% | 37,507 psi | 59% | 1896 fps | 95.6% |
| ADI APS 450 | <<locked>> | 80% | 54,592 psi | 86% | 1545 fps | 100% |
| ADI AR 2205 | <<locked>> | 80% | 49,385 psi | 77% | 1959 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 33,997 psi | 53% | 1906 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 29,936 psi | 47% | 1867 fps | 95% |
| Alliant AR-Comp | <<locked>> | 80% | 22,800 psi | 36% | 1739 fps | 96.6% |
| Alliant Power Pro 1200-R | <<locked>> | 98% | 47,442 psi | 74% | 2211 fps | 95.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 28,471 psi | 45% | 1831 fps | 97.9% |
| Alliant Reloder-7 | <<locked>> | 80% | 35,708 psi | 56% | 1909 fps | 99.6% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 31,009 psi | 49% | 1818 fps | 96.1% |
| Hodgdon Benchmark | <<locked>> | 94% | 40,553 psi | 64% | 1995 fps | 95.1% |
| Hodgdon CFE BLK | <<locked>> | 80% | 50,778 psi | 80% | 2116 fps | 96.7% |
| Hodgdon H322 | <<locked>> | 84% | 31,227 psi | 49% | 1893 fps | 95.6% |
| Hodgdon H335 | <<locked>> | 86% | 33,214 psi | 52% | 1942 fps | 95.1% |
| Hodgdon H4198 | <<locked>> | 80% | 36,477 psi | 57% | 1890 fps | 96.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,308 psi | 37% | 1109 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 29,385 psi | 46% | 1906 fps | 95.8% |
| IMR 4198 | <<locked>> | 80% | 30,618 psi | 48% | 1824 fps | 99% |
| IMR 4227 | <<locked>> | 80% | 41,814 psi | 66% | 1949 fps | 100% |
| Lovex D060 | <<locked>> | 80% | 49,603 psi | 78% | 2070 fps | 100% |
| Lovex D073.4 | 19.6 gr | 84% | 36,100 psi | 57% | 1978 fps | 95.2% |
| Lovex D073.5 | <<locked>> | 94% | 40,654 psi | 64% | 2051 fps | 95.7% |
| Lovex D073.6 | <<locked>> | 98% | 35,230 psi | 55% | 2014 fps | 95.1% |
| Lovex S053 | <<locked>> | 80% | 40,480 psi | 63% | 1909 fps | 100% |
| Norma 200 | <<locked>> | 80% | 32,126 psi | 50% | 1890 fps | 99.3% |
| Norma 202 | <<locked>> | 94% | 33,489 psi | 52% | 1955 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,061 psi | 36% | 1132 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 40,973 psi | 64% | 1975 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 37,202 psi | 58% | 1988 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 92% | 35,375 psi | 55% | 1952 fps | 95.7% |
| Shooters World AR Plus | 19.6 gr | 84% | 36,100 psi | 57% | 1978 fps | 95.2% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 49,603 psi | 78% | 2070 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 98% | 35,230 psi | 55% | 2014 fps | 95.1% |
| Shooters World SOCOM | <<locked>> | 80% | 50,082 psi | 78% | 2054 fps | 100% |
| Shooters World Tactical Rifle | <<locked>> | 94% | 45,919 psi | 72% | 2073 fps | 95.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 38,000 psi | 60% | 1762 fps | 100% |
| SNPE Vectan SP 10 | 19.6 gr | 84% | 34,258 psi | 54% | 1955 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 29,167 psi | 46% | 1824 fps | 95.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 34,911 psi | 55% | 1893 fps | 95.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 31,589 psi | 50% | 1850 fps | 95.5% |
| Somchem S321 | <<locked>> | 96% | 41,959 psi | 66% | 2087 fps | 95.2% |
| Somchem S335 | <<locked>> | 88% | 29,747 psi | 47% | 1827 fps | 95% |
| Vihtavuori N110 | <<locked>> | 80% | 47,442 psi | 74% | 1923 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 34,229 psi | 54% | 1877 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 27,572 psi | 43% | 1768 fps | 97.2% |
| Vihtavuori N133 | <<locked>> | 82% | 25,527 psi | 40% | 1726 fps | 95% |
| Vihtavuori N135 | <<locked>> | 88% | 24,758 psi | 39% | 1781 fps | 95.1% |
| Vihtavuori N140 | <<locked>> | 94% | 32,082 psi | 50% | 1903 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 98% | 34,418 psi | 54% | 1962 fps | 95.3% |
| Winchester 748 | <<locked>> | 98% | 40,625 psi | 64% | 2083 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 56 powders for 7 x 44 Penna loaded with the .277 | 150gr | Speer Deep Curl Soft Point. SNPE Vectan SP 10 delivers the highest muzzle velocity at 2,274 fps; across all powders the maximum-charge window runs from 1,237 fps to 2,274 fps. Accurate 2015 gives the best case fill at 100 %, and 56 of the 56 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 | Speer Deep Curl Soft Point they combine a high case fill with complete burn and sit in the upper velocity band. 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.