Load Specifications
Load data in caliber 7 x 44 Penna with .277 | 140gr | Speer TBBC bullet and 46 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>> | 94% | 55,492 psi | 87% | 2198 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 40,480 psi | 63% | 2093 fps | 98.8% |
| Accurate 2460ᴾ | <<locked>> | 100% | 44,744 psi | 70% | 2169 fps | 96.9% |
| Accurate 2495ᴾ | <<locked>> | 100% | 28,935 psi | 45% | 1982 fps | 96.5% |
| Accurate LT-30ᴾ | <<locked>> | 100% | 56,014 psi | 88% | 2195 fps | 99.4% |
| Accurate LT-32ᴾ | <<locked>> | 100% | 56,695 psi | 89% | 2201 fps | 98.2% |
| Accurate No. 11 FS | <<locked>> | 82% | 54,926 psi | 86% | 2149 fps | 100% |
| ADI APS 450 | <<locked>> | 82% | 56,057 psi | 88% | 1604 fps | 100% |
| ADI AR 2205 | <<locked>> | 86% | 55,564 psi | 87% | 2087 fps | 100% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 57,377 psi | 90% | 2264 fps | 100% |
| ADI AR 2219ᴾ | <<locked>> | 100% | 52,170 psi | 82% | 2274 fps | 99.1% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 37,507 psi | 59% | 2110 fps | 99.8% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 46,934 psi | 74% | 2195 fps | 99.9% |
| Alliant Reloder-7 | <<locked>> | 98% | 55,985 psi | 88% | 2234 fps | 100% |
| Baschieri & Pellagri 106ᴾ | <<locked>> | 100% | 53,664 psi | 84% | 2195 fps | 99.4% |
| Hodgdon CFE BLK | <<locked>> | 86% | 57,522 psi | 90% | 2257 fps | 96.7% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 47,007 psi | 74% | 2208 fps | 98.4% |
| Hodgdon H335ᴾ | <<locked>> | 100% | 48,066 psi | 75% | 2228 fps | 97.6% |
| Hodgdon H4198 | <<locked>> | 98% | 57,725 psi | 90% | 2228 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,111 psi | 49% | 1273 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 35,839 psi | 56% | 2087 fps | 96.8% |
| IMR 4198ᴾ | <<locked>> | 100% | 49,647 psi | 78% | 2175 fps | 100% |
| IMR 4227 | <<locked>> | 92% | 55,245 psi | 87% | 2172 fps | 100% |
| Lovex D060 | <<locked>> | 86% | 55,637 psi | 87% | 2208 fps | 100% |
| Lovex D063 | <<locked>> | 82% | 55,724 psi | 87% | 2192 fps | 100% |
| Lovex D073.4 | <<locked>> | 98% | 53,490 psi | 84% | 2274 fps | 97.7% |
| Lovex S053 | <<locked>> | 94% | 55,985 psi | 88% | 2156 fps | 100% |
| Norma 200ᴾ | <<locked>> | 100% | 53,954 psi | 85% | 2257 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 30,545 psi | 48% | 1299 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 94% | 57,406 psi | 90% | 2231 fps | 100% |
| ReloadSwiss RS 40ᴾ | <<locked>> | 100% | 46,920 psi | 74% | 2188 fps | 96.4% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 40,437 psi | 63% | 2093 fps | 95.9% |
| Shooters World AR Plus | <<locked>> | 98% | 53,490 psi | 84% | 2274 fps | 97.7% |
| Shooters World Blackout | <<locked>> | 82% | 55,724 psi | 87% | 2192 fps | 100% |
| Shooters World Buffalo Rifle | <<locked>> | 86% | 55,637 psi | 87% | 2208 fps | 100% |
| Shooters World SOCOM | <<locked>> | 86% | 57,101 psi | 89% | 2192 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 98% | 56,724 psi | 89% | 2031 fps | 100% |
| SNPE Vectan SP 10ᴾ | <<locked>> | 100% | 52,417 psi | 82% | 2277 fps | 98.3% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 48,776 psi | 76% | 2198 fps | 99.3% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 40,596 psi | 64% | 2037 fps | 95.9% |
| Somchem S335ᴾ | <<locked>> | 100% | 38,682 psi | 61% | 2037 fps | 96.6% |
| Vihtavuori N110 | <<locked>> | 88% | 55,782 psi | 87% | 2077 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 57,464 psi | 90% | 2221 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 45,803 psi | 72% | 2123 fps | 99.7% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 39,711 psi | 62% | 2047 fps | 98.4% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 32,300 psi | 51% | 1998 fps | 97% |
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% | 35,317 psi | 55% | 1932 fps | 98.5% |
| Accurate 2015 | <<locked>> | 88% | 28,152 psi | 44% | 1877 fps | 95.4% |
| Accurate 2460 | <<locked>> | 96% | 39,030 psi | 61% | 2087 fps | 95.5% |
| Accurate 2495 | <<locked>> | 98% | 27,151 psi | 43% | 1946 fps | 95.8% |
| Accurate LT-30 | <<locked>> | 82% | 32,735 psi | 51% | 1867 fps | 95.1% |
| Accurate LT-32 | <<locked>> | 90% | 41,814 psi | 66% | 2014 fps | 95.5% |
| Accurate No. 11 FS | <<locked>> | 80% | 51,039 psi | 80% | 2106 fps | 100% |
| ADI APS 450 | <<locked>> | 80% | 54,302 psi | 85% | 1588 fps | 100% |
| ADI AR 2205 | <<locked>> | 80% | 46,572 psi | 73% | 1988 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 31,183 psi | 49% | 1919 fps | 99.9% |
| ADI AR 2219 | <<locked>> | 86% | 33,562 psi | 53% | 1991 fps | 95% |
| Alliant AR-Comp | <<locked>> | 84% | 23,627 psi | 37% | 1808 fps | 95.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 25,585 psi | 40% | 1824 fps | 95.7% |
| Alliant Reloder-7 | <<locked>> | 80% | 32,532 psi | 51% | 1909 fps | 98.4% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 32,329 psi | 51% | 1893 fps | 95.3% |
| Hodgdon CFE BLK | <<locked>> | 82% | 50,459 psi | 79% | 2169 fps | 95.3% |
| Hodgdon H322 | <<locked>> | 90% | 34,577 psi | 54% | 2011 fps | 95.4% |
| Hodgdon H335 | <<locked>> | 92% | 37,101 psi | 58% | 2064 fps | 95% |
| Hodgdon H4198 | <<locked>> | 82% | 36,143 psi | 57% | 1936 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,510 psi | 35% | 1129 fps | 100% |
| IMR 3031 | <<locked>> | 96% | 31,923 psi | 50% | 2008 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 28,442 psi | 45% | 1831 fps | 97.5% |
| IMR 4227 | <<locked>> | 80% | 38,334 psi | 60% | 1959 fps | 100% |
| Lovex D060 | <<locked>> | 80% | 46,760 psi | 73% | 2096 fps | 100% |
| Lovex D063 | <<locked>> | 80% | 51,808 psi | 81% | 2149 fps | 100% |
| Lovex D073.4 | 20.5 gr | 90% | 40,408 psi | 63% | 2103 fps | 95.1% |
| Lovex S053 | <<locked>> | 80% | 37,608 psi | 59% | 1936 fps | 100% |
| Norma 200 | <<locked>> | 80% | 28,892 psi | 45% | 1886 fps | 97.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,220 psi | 35% | 1155 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 37,521 psi | 59% | 1985 fps | 99.9% |
| ReloadSwiss RS 40 | <<locked>> | 96% | 41,205 psi | 65% | 2106 fps | 95% |
| Rottweil R 901 | <<locked>> | 98% | 38,174 psi | 60% | 2057 fps | 95.3% |
| Shooters World AR Plus | 20.5 gr | 90% | 40,408 psi | 63% | 2103 fps | 95.1% |
| Shooters World Blackout | <<locked>> | 80% | 51,808 psi | 81% | 2149 fps | 100% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 46,760 psi | 73% | 2096 fps | 100% |
| Shooters World SOCOM | <<locked>> | 80% | 46,470 psi | 73% | 2073 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 35,317 psi | 55% | 1791 fps | 100% |
| SNPE Vectan SP 10 | 20.4 gr | 90% | 37,695 psi | 59% | 2070 fps | 95.2% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 30,356 psi | 48% | 1903 fps | 95% |
| SNPE Vectan Tubal 3000 | <<locked>> | 98% | 38,174 psi | 60% | 2001 fps | 95.2% |
| Somchem S335 | <<locked>> | 96% | 34,055 psi | 53% | 1962 fps | 95.2% |
| Vihtavuori N110 | <<locked>> | 80% | 44,802 psi | 70% | 1962 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 31,430 psi | 49% | 1893 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 25,338 psi | 40% | 1772 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 90% | 29,791 psi | 47% | 1870 fps | 95.5% |
| Vihtavuori N135 | <<locked>> | 96% | 28,718 psi | 45% | 1926 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 46 powders for 7 x 44 Penna loaded with the .277 | 140gr | Speer TBBC. SNPE Vectan SP 10 delivers the highest muzzle velocity at 2,277 fps; across all powders the maximum-charge window runs from 1,273 fps to 2,277 fps. Accurate 2015 gives the best case fill at 100 %, and 46 of the 46 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 45–90 %, leaving at least 10 % headroom. The 140.0 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 | 140gr | Speer TBBC they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.