Load Specifications
Load data in caliber 7 x 44 Penna with .277 | 120gr | Barnes X S bullet and 37 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Shooters World Buffalo Rifle, Lovex D060 and ReloadSwiss RS 36.
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% | 57,566 psi | 90% | 2402 fps | 99.9% |
| Accurate 2015ᴾ | <<locked>> | 100% | 39,914 psi | 63% | 2247 fps | 97.2% |
| Accurate 5744 | <<locked>> | 86% | 57,421 psi | 90% | 2421 fps | 100% |
| Accurate LT-30ᴾ | <<locked>> | 100% | 54,273 psi | 85% | 2352 fps | 98.2% |
| Accurate LT-32ᴾ | <<locked>> | 100% | 54,853 psi | 86% | 2356 fps | 96.3% |
| Accurate No. 11 FS | <<locked>> | 84% | 57,203 psi | 90% | 2365 fps | 100% |
| ADI APS 450 | <<locked>> | 82% | 55,259 psi | 87% | 1745 fps | 100% |
| ADI AR 2205 | <<locked>> | 88% | 57,493 psi | 90% | 2293 fps | 100% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 54,752 psi | 86% | 2438 fps | 100% |
| ADI AR 2219ᴾ | <<locked>> | 100% | 50,720 psi | 79% | 2428 fps | 97.5% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 37,536 psi | 59% | 2267 fps | 98.7% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 45,905 psi | 72% | 2356 fps | 99.2% |
| Alliant Reloder-7 | <<locked>> | 98% | 54,665 psi | 86% | 2408 fps | 99.9% |
| Baschieri & Pellagri 106ᴾ | <<locked>> | 100% | 51,822 psi | 81% | 2349 fps | 98.1% |
| Hodgdon H335ᴾ | <<locked>> | 100% | 49,908 psi | 78% | 2421 fps | 96.2% |
| Hodgdon H4198ᴾ | <<locked>> | 100% | 55,245 psi | 87% | 2379 fps | 97.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,009 psi | 49% | 1385 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 48,559 psi | 76% | 2343 fps | 99.8% |
| IMR 4227 | <<locked>> | 94% | 56,724 psi | 89% | 2379 fps | 100% |
| Lovex D060 | <<locked>> | 88% | 57,421 psi | 90% | 2421 fps | 100% |
| Lovex D063 | <<locked>> | 86% | 55,027 psi | 86% | 2356 fps | 100% |
| Lovex D073.4ᴾ | <<locked>> | 100% | 55,608 psi | 87% | 2477 fps | 96.3% |
| Lovex S053 | <<locked>> | 96% | 57,609 psi | 90% | 2365 fps | 100% |
| Norma 200ᴾ | <<locked>> | 100% | 52,823 psi | 83% | 2431 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,111 psi | 49% | 1424 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 94% | 55,912 psi | 88% | 2411 fps | 100% |
| Shooters World AR Plusᴾ | <<locked>> | 100% | 55,608 psi | 87% | 2477 fps | 96.3% |
| Shooters World Blackout | <<locked>> | 82% | 53,969 psi | 85% | 2359 fps | 100% |
| Shooters World Buffalo Rifle | <<locked>> | 88% | 57,421 psi | 90% | 2421 fps | 100% |
| Shooters World SOCOM | <<locked>> | 86% | 55,027 psi | 86% | 2356 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 98% | 55,622 psi | 87% | 2208 fps | 100% |
| SNPE Vectan SP 10ᴾ | <<locked>> | 100% | 50,705 psi | 79% | 2434 fps | 96.4% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 47,355 psi | 74% | 2356 fps | 97.9% |
| Vihtavuori N110 | <<locked>> | 90% | 57,696 psi | 90% | 2287 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 54,810 psi | 86% | 2392 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 44,788 psi | 70% | 2280 fps | 98.8% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 39,146 psi | 61% | 2192 fps | 96.6% |
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% | 35,215 psi | 55% | 2077 fps | 96.9% |
| Accurate 2015 | <<locked>> | 94% | 33,910 psi | 53% | 2139 fps | 95.5% |
| Accurate 5744 | <<locked>> | 80% | 48,211 psi | 76% | 2297 fps | 99.7% |
| Accurate LT-30 | <<locked>> | 90% | 40,509 psi | 63% | 2156 fps | 95.5% |
| Accurate LT-32 | <<locked>> | 96% | 48,718 psi | 76% | 2274 fps | 95.1% |
| Accurate No. 11 FS | <<locked>> | 80% | 49,995 psi | 78% | 2280 fps | 100% |
| ADI APS 450 | <<locked>> | 80% | 53,621 psi | 84% | 1726 fps | 100% |
| ADI AR 2205 | <<locked>> | 80% | 45,759 psi | 72% | 2152 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 31,111 psi | 49% | 2070 fps | 99.2% |
| ADI AR 2219 | <<locked>> | 94% | 41,959 psi | 66% | 2297 fps | 95.5% |
| Alliant AR-Comp | <<locked>> | 90% | 28,340 psi | 44% | 2057 fps | 95.5% |
| Alliant Reloder-10x | <<locked>> | 84% | 29,443 psi | 46% | 2051 fps | 95.3% |
| Alliant Reloder-7 | <<locked>> | 80% | 33,112 psi | 52% | 2067 fps | 97% |
| Baschieri & Pellagri 106 | <<locked>> | 90% | 38,348 psi | 60% | 2149 fps | 95.2% |
| Hodgdon H335 | <<locked>> | 98% | 46,688 psi | 73% | 2375 fps | 95.4% |
| Hodgdon H4198 | <<locked>> | 90% | 42,337 psi | 66% | 2195 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,453 psi | 37% | 1243 fps | 100% |
| IMR 4198 | <<locked>> | 80% | 28,718 psi | 45% | 1969 fps | 95.7% |
| IMR 4227 | <<locked>> | 80% | 38,363 psi | 60% | 2123 fps | 99.5% |
| Lovex D060 | 16.5 gr | 80% | 45,643 psi | 72% | 2257 fps | 99.5% |
| Lovex D063 | <<locked>> | 80% | 45,455 psi | 71% | 2234 fps | 99.7% |
| Lovex D073.4 | <<locked>> | 98% | 51,692 psi | 81% | 2428 fps | 95.6% |
| Lovex S053 | <<locked>> | 80% | 37,507 psi | 59% | 2096 fps | 100% |
| Norma 200 | <<locked>> | 80% | 30,008 psi | 47% | 2047 fps | 96.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,221 psi | 36% | 1273 fps | 100% |
| ReloadSwiss RS 36 | 17.2 gr | 80% | 37,478 psi | 59% | 2146 fps | 99.3% |
| Shooters World AR Plus | <<locked>> | 98% | 51,692 psi | 81% | 2428 fps | 95.6% |
| Shooters World Blackout | <<locked>> | 80% | 50,459 psi | 79% | 2316 fps | 99.9% |
| Shooters World Buffalo Rifle | 16.5 gr | 80% | 45,643 psi | 72% | 2257 fps | 99.5% |
| Shooters World SOCOM | <<locked>> | 80% | 45,455 psi | 71% | 2234 fps | 99.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 35,563 psi | 56% | 1952 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 96% | 44,396 psi | 70% | 2339 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 92% | 37,768 psi | 59% | 2195 fps | 95.5% |
| Vihtavuori N110 | <<locked>> | 80% | 44,048 psi | 69% | 2126 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 31,343 psi | 49% | 2044 fps | 99.8% |
| Vihtavuori N130 | <<locked>> | 86% | 30,545 psi | 48% | 2024 fps | 95.2% |
| Vihtavuori N133 | <<locked>> | 96% | 34,867 psi | 55% | 2113 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 37 powders for 7 x 44 Penna loaded with the .277 | 120gr | Barnes X S. Lovex D073.4 delivers the highest muzzle velocity at 2,477 fps; across all powders the maximum-charge window runs from 1,385 fps to 2,477 fps. Accurate 2015 gives the best case fill at 100 %, and 37 of the 37 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 120.0 gr projectile in 0.277" calls for a 1:11.0 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. Shooters World Buffalo Rifle, Lovex D060, ReloadSwiss RS 36 rank at the top here: for 7 x 44 Penna with the .277 | 120gr | Barnes X S 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.