Load Specifications
Load data in caliber 7 x 44 Penna with .277 | 130gr | Sierra GameKing 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% | 55,854 psi | 88% | 2326 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 41,046 psi | 64% | 2221 fps | 98.7% |
| Accurate 2460ᴾ | <<locked>> | 100% | 45,107 psi | 71% | 2297 fps | 96.7% |
| Accurate 2495ᴾ | <<locked>> | 100% | 29,341 psi | 46% | 2096 fps | 96.3% |
| Accurate 5744 | <<locked>> | 84% | 55,767 psi | 87% | 2339 fps | 100% |
| Accurate LT-30ᴾ | <<locked>> | 100% | 55,767 psi | 87% | 2320 fps | 99.3% |
| Accurate LT-32ᴾ | <<locked>> | 100% | 56,376 psi | 88% | 2326 fps | 98% |
| Accurate No. 11 FS | <<locked>> | 82% | 55,317 psi | 87% | 2280 fps | 100% |
| ADI APS 450 | <<locked>> | 84% | 57,696 psi | 90% | 1726 fps | 100% |
| ADI AR 2205 | <<locked>> | 86% | 55,492 psi | 87% | 2208 fps | 100% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 57,551 psi | 90% | 2398 fps | 100% |
| ADI AR 2219ᴾ | <<locked>> | 100% | 52,678 psi | 83% | 2408 fps | 99% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 37,942 psi | 59% | 2238 fps | 99.7% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 47,732 psi | 75% | 2329 fps | 99.9% |
| Alliant Reloder-7 | <<locked>> | 98% | 56,739 psi | 89% | 2372 fps | 100% |
| Baschieri & Pellagri 106ᴾ | <<locked>> | 100% | 53,679 psi | 84% | 2323 fps | 99.3% |
| Hodgdon CFE BLK | <<locked>> | 84% | 54,085 psi | 85% | 2343 fps | 95.8% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 43,424 psi | 68% | 2277 fps | 97.5% |
| Hodgdon H335ᴾ | <<locked>> | 100% | 52,272 psi | 82% | 2408 fps | 98.1% |
| Hodgdon H4198 | <<locked>> | 98% | 54,679 psi | 86% | 2323 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 30,806 psi | 48% | 1348 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 50,256 psi | 79% | 2310 fps | 100% |
| IMR 4227 | <<locked>> | 92% | 55,724 psi | 87% | 2303 fps | 100% |
| Lovex D060 | <<locked>> | 86% | 55,767 psi | 87% | 2339 fps | 100% |
| Lovex D063 | <<locked>> | 86% | 56,826 psi | 89% | 2316 fps | 100% |
| Lovex D073.4 | <<locked>> | 98% | 53,853 psi | 84% | 2408 fps | 97.5% |
| Lovex S053 | <<locked>> | 94% | 56,478 psi | 89% | 2290 fps | 100% |
| Norma 200ᴾ | <<locked>> | 100% | 54,375 psi | 85% | 2392 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 30,777 psi | 48% | 1388 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 92% | 54,781 psi | 86% | 2336 fps | 100% |
| ReloadSwiss RS 40ᴾ | <<locked>> | 100% | 46,876 psi | 73% | 2310 fps | 96.1% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 40,437 psi | 63% | 2208 fps | 95.6% |
| Shooters World AR Plus | <<locked>> | 98% | 53,853 psi | 84% | 2408 fps | 97.5% |
| Shooters World Blackout | <<locked>> | 82% | 56,057 psi | 88% | 2326 fps | 100% |
| Shooters World Buffalo Rifle | <<locked>> | 86% | 55,767 psi | 87% | 2339 fps | 100% |
| Shooters World SOCOM | <<locked>> | 86% | 56,826 psi | 89% | 2316 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 98% | 56,826 psi | 89% | 2152 fps | 100% |
| SNPE Vectan SP 10ᴾ | <<locked>> | 100% | 53,330 psi | 84% | 2418 fps | 98.3% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 48,863 psi | 77% | 2326 fps | 99.1% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 40,640 psi | 64% | 2152 fps | 95.6% |
| Somchem S335ᴾ | <<locked>> | 100% | 39,015 psi | 61% | 2159 fps | 96.4% |
| Vihtavuori N110 | <<locked>> | 88% | 56,536 psi | 89% | 2211 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 57,638 psi | 90% | 2352 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 45,876 psi | 72% | 2244 fps | 99.7% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 39,726 psi | 62% | 2162 fps | 98.2% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 32,329 psi | 51% | 2110 fps | 96.7% |
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% | 35,650 psi | 56% | 2047 fps | 98.3% |
| Accurate 2015 | <<locked>> | 88% | 28,485 psi | 45% | 1988 fps | 95.2% |
| Accurate 2460 | <<locked>> | 96% | 39,711 psi | 62% | 2215 fps | 95.4% |
| Accurate 2495 | <<locked>> | 98% | 27,224 psi | 43% | 2051 fps | 95.4% |
| Accurate 5744 | <<locked>> | 80% | 49,400 psi | 77% | 2257 fps | 100% |
| Accurate LT-30 | <<locked>> | 84% | 34,795 psi | 55% | 2014 fps | 95.5% |
| Accurate LT-32 | <<locked>> | 90% | 41,989 psi | 66% | 2129 fps | 95.2% |
| Accurate No. 11 FS | <<locked>> | 80% | 51,648 psi | 81% | 2241 fps | 100% |
| ADI APS 450 | <<locked>> | 80% | 54,418 psi | 85% | 1690 fps | 100% |
| ADI AR 2205 | <<locked>> | 80% | 46,499 psi | 73% | 2106 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 31,241 psi | 49% | 2031 fps | 99.8% |
| ADI AR 2219 | <<locked>> | 88% | 35,882 psi | 56% | 2149 fps | 95.5% |
| Alliant AR-Comp | <<locked>> | 84% | 23,685 psi | 37% | 1909 fps | 95.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 26,020 psi | 41% | 1939 fps | 95.5% |
| Alliant Reloder-7 | <<locked>> | 80% | 32,938 psi | 52% | 2028 fps | 98.3% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 32,576 psi | 51% | 2005 fps | 95.1% |
| Hodgdon CFE BLK | <<locked>> | 82% | 50,589 psi | 79% | 2297 fps | 95.1% |
| Hodgdon H322 | <<locked>> | 94% | 36,390 psi | 57% | 2159 fps | 95.7% |
| Hodgdon H335 | <<locked>> | 92% | 39,914 psi | 63% | 2228 fps | 95.5% |
| Hodgdon H4198 | <<locked>> | 84% | 36,405 psi | 57% | 2051 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,829 psi | 36% | 1207 fps | 100% |
| IMR 4198 | <<locked>> | 80% | 28,674 psi | 45% | 1939 fps | 97.3% |
| IMR 4227 | <<locked>> | 80% | 39,146 psi | 61% | 2087 fps | 100% |
| Lovex D060 | <<locked>> | 80% | 46,746 psi | 73% | 2221 fps | 100% |
| Lovex D063 | <<locked>> | 80% | 46,978 psi | 74% | 2201 fps | 100% |
| Lovex D073.4 | 22.6 gr | 92% | 43,888 psi | 69% | 2277 fps | 95.7% |
| Lovex S053 | <<locked>> | 80% | 37,942 psi | 59% | 2054 fps | 100% |
| Norma 200 | <<locked>> | 80% | 29,225 psi | 46% | 2001 fps | 97.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,481 psi | 35% | 1234 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 37,898 psi | 59% | 2106 fps | 99.9% |
| ReloadSwiss RS 40 | <<locked>> | 98% | 44,396 psi | 70% | 2274 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 98% | 38,363 psi | 60% | 2175 fps | 95% |
| Shooters World AR Plus | 22.6 gr | 92% | 43,888 psi | 69% | 2277 fps | 95.7% |
| Shooters World Blackout | <<locked>> | 80% | 52,301 psi | 82% | 2280 fps | 100% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 46,746 psi | 73% | 2221 fps | 100% |
| Shooters World SOCOM | <<locked>> | 80% | 46,978 psi | 74% | 2201 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 35,636 psi | 56% | 1903 fps | 100% |
| SNPE Vectan SP 10 | 22 gr | 90% | 38,145 psi | 60% | 2195 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 32,256 psi | 51% | 2051 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 98% | 38,406 psi | 60% | 2116 fps | 95% |
| Somchem S335 | <<locked>> | 96% | 34,621 psi | 54% | 2080 fps | 95.1% |
| Vihtavuori N110 | <<locked>> | 80% | 44,831 psi | 70% | 2080 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 31,502 psi | 49% | 2005 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 26,818 psi | 42% | 1906 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 90% | 29,979 psi | 47% | 1978 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 96% | 28,993 psi | 45% | 2037 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 71 powders for 7 x 44 Penna loaded with the .277 | 130gr | Sierra GameKing. Accurate 2200 delivers the highest muzzle velocity at 2,441 fps; across all powders the maximum-charge window runs from 1,348 fps to 2,441 fps. Accurate 2015 gives the best case fill at 100 %, and 71 of the 71 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 43–90 %, leaving at least 10 % headroom. The 130.0 gr projectile in 0.277" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 2015, Accurate 2200, Accurate 2460 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 | 130gr | Sierra GameKing they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2200, Accurate 2230, Accurate 2520 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.