Load Specifications
Load data in caliber 7 x 44 Penna with .277 | 130gr | Barnes TSX BT bullet and 39 powders. The key underlying parameters are shown in the table above.
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>> | 96% | 55,100 psi | 86% | 2283 fps | 99.9% |
| Accurate 2015ᴾ | <<locked>> | 100% | 36,085 psi | 57% | 2113 fps | 97.1% |
| Accurate 5744 | <<locked>> | 82% | 54,505 psi | 85% | 2287 fps | 100% |
| Accurate LT-30ᴾ | <<locked>> | 100% | 51,924 psi | 81% | 2234 fps | 98.4% |
| Accurate LT-32ᴾ | <<locked>> | 100% | 52,562 psi | 82% | 2238 fps | 96.7% |
| Accurate No. 11 FS | <<locked>> | 84% | 53,954 psi | 85% | 2234 fps | 100% |
| ADI APS 450 | <<locked>> | 84% | 57,159 psi | 90% | 1683 fps | 100% |
| ADI AR 2205 | <<locked>> | 88% | 55,187 psi | 86% | 2172 fps | 100% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 52,272 psi | 82% | 2313 fps | 100% |
| ADI AR 2219ᴾ | <<locked>> | 100% | 47,659 psi | 75% | 2300 fps | 97.7% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 34,447 psi | 54% | 2139 fps | 98.8% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 42,308 psi | 66% | 2224 fps | 99.3% |
| Alliant Reloder-7ᴾ | <<locked>> | 100% | 55,158 psi | 86% | 2323 fps | 100% |
| Baschieri & Pellagri 106ᴾ | <<locked>> | 100% | 49,414 psi | 77% | 2231 fps | 98.3% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 42,844 psi | 67% | 2231 fps | 96.7% |
| Hodgdon H335ᴾ | <<locked>> | 100% | 43,729 psi | 69% | 2251 fps | 95.7% |
| Hodgdon H4198ᴾ | <<locked>> | 100% | 57,624 psi | 90% | 2313 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 30,081 psi | 47% | 1316 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 46,456 psi | 73% | 2224 fps | 99.9% |
| IMR 4227 | <<locked>> | 94% | 54,476 psi | 85% | 2257 fps | 100% |
| Lovex D060 | <<locked>> | 88% | 55,288 psi | 87% | 2297 fps | 100% |
| Lovex D063 | <<locked>> | 84% | 55,013 psi | 86% | 2277 fps | 100% |
| Lovex D073.4ᴾ | <<locked>> | 100% | 52,040 psi | 82% | 2346 fps | 96.6% |
| Lovex S040 | <<locked>> | 82% | 56,623 psi | 89% | 2156 fps | 100% |
| Lovex S053 | <<locked>> | 96% | 54,926 psi | 86% | 2244 fps | 100% |
| Norma 200ᴾ | <<locked>> | 100% | 48,443 psi | 76% | 2293 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 29,356 psi | 46% | 1345 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 96% | 56,144 psi | 88% | 2316 fps | 100% |
| Shooters World AR Plusᴾ | <<locked>> | 100% | 52,040 psi | 82% | 2346 fps | 96.6% |
| Shooters World Blackout | <<locked>> | 84% | 55,013 psi | 86% | 2277 fps | 100% |
| Shooters World Buffalo Rifle | <<locked>> | 88% | 55,288 psi | 87% | 2297 fps | 100% |
| Shooters World SOCOM | <<locked>> | 88% | 56,347 psi | 88% | 2274 fps | 100% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 55,172 psi | 86% | 2110 fps | 100% |
| SNPE Vectan SP 10ᴾ | <<locked>> | 100% | 47,659 psi | 75% | 2306 fps | 96.7% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 44,570 psi | 70% | 2231 fps | 98.1% |
| Vihtavuori N110 | <<locked>> | 92% | 57,522 psi | 90% | 2192 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 52,547 psi | 82% | 2274 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 41,626 psi | 65% | 2156 fps | 98.9% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 36,143 psi | 57% | 2070 fps | 96.7% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 32,155 psi | 50% | 1955 fps | 96.9% |
| Accurate 2015 | <<locked>> | 94% | 29,921 psi | 47% | 1998 fps | 95.1% |
| Accurate 5744 | <<locked>> | 80% | 51,358 psi | 80% | 2251 fps | 100% |
| Accurate LT-30 | <<locked>> | 88% | 35,868 psi | 56% | 2005 fps | 95.1% |
| Accurate LT-32 | <<locked>> | 96% | 46,006 psi | 72% | 2152 fps | 95.4% |
| Accurate No. 11 FS | <<locked>> | 80% | 47,892 psi | 75% | 2165 fps | 100% |
| ADI APS 450 | <<locked>> | 80% | 53,621 psi | 84% | 1644 fps | 100% |
| ADI AR 2205 | <<locked>> | 80% | 43,468 psi | 68% | 2037 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 27,920 psi | 44% | 1946 fps | 99.1% |
| ADI AR 2219 | <<locked>> | 92% | 36,927 psi | 58% | 2133 fps | 95% |
| Alliant AR-Comp | <<locked>> | 90% | 25,208 psi | 40% | 1926 fps | 95.1% |
| Alliant Reloder-10x | <<locked>> | 86% | 27,369 psi | 43% | 1952 fps | 95.5% |
| Alliant Reloder-7 | <<locked>> | 80% | 29,327 psi | 46% | 1932 fps | 96.7% |
| Baschieri & Pellagri 106 | <<locked>> | 90% | 35,752 psi | 56% | 2034 fps | 95.4% |
| Hodgdon H322 | <<locked>> | 96% | 38,014 psi | 60% | 2152 fps | 95.4% |
| Hodgdon H335 | <<locked>> | 98% | 41,263 psi | 65% | 2211 fps | 95% |
| Hodgdon H4198 | <<locked>> | 88% | 39,769 psi | 62% | 2077 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 21,611 psi | 34% | 1168 fps | 100% |
| IMR 4198 | <<locked>> | 80% | 25,962 psi | 41% | 1850 fps | 95.4% |
| IMR 4227 | <<locked>> | 80% | 35,839 psi | 56% | 2005 fps | 99.6% |
| Lovex D060 | <<locked>> | 80% | 43,671 psi | 68% | 2142 fps | 99.6% |
| Lovex D063 | <<locked>> | 80% | 48,051 psi | 75% | 2195 fps | 99.9% |
| Lovex D073.4 | <<locked>> | 96% | 45,049 psi | 71% | 2257 fps | 95.1% |
| Lovex S040 | <<locked>> | 80% | 54,056 psi | 85% | 2129 fps | 100% |
| Lovex S053 | <<locked>> | 80% | 34,403 psi | 54% | 1975 fps | 100% |
| Norma 200 | <<locked>> | 80% | 25,425 psi | 40% | 1896 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 21,161 psi | 33% | 1194 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 34,200 psi | 54% | 2018 fps | 99.3% |
| Shooters World AR Plus | <<locked>> | 96% | 45,049 psi | 71% | 2257 fps | 95.1% |
| Shooters World Blackout | <<locked>> | 80% | 48,051 psi | 75% | 2195 fps | 99.9% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 43,671 psi | 68% | 2142 fps | 99.6% |
| Shooters World SOCOM | <<locked>> | 80% | 43,004 psi | 67% | 2113 fps | 99.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 32,967 psi | 52% | 1844 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 96% | 41,742 psi | 65% | 2221 fps | 95.3% |
| SNPE Vectan SP 3 | <<locked>> | 90% | 32,982 psi | 52% | 2034 fps | 95% |
| Vihtavuori N110 | <<locked>> | 80% | 41,205 psi | 65% | 2011 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 28,253 psi | 44% | 1923 fps | 99.7% |
| Vihtavuori N130 | <<locked>> | 88% | 28,921 psi | 45% | 1932 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 96% | 32,126 psi | 50% | 1995 fps | 95.3% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 39 powders for 7 x 44 Penna loaded with the .277 | 130gr | Barnes TSX BT. Lovex D073.4 delivers the highest muzzle velocity at 2,346 fps; across all powders the maximum-charge window runs from 1,316 fps to 2,346 fps. Accurate 2015 gives the best case fill at 100 %, and 39 of the 39 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 46–90 %, leaving at least 10 % headroom. The 130.0 gr projectile in 0.277" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Accurate 2015, Accurate LT-30, Accurate LT-32 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.