Load Specifications
Load data in caliber 7 x 44 Penna with .277 | 140gr | Winchester Silvertip bullet and 63 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 ADI AR 2219.
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>> | 90% | 54,839 psi | 86% | 2260 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 46,818 psi | 73% | 2241 fps | 99.9% |
| Accurate 2200 | <<locked>> | 96% | 57,580 psi | 90% | 2395 fps | 95.7% |
| Accurate 2230 | <<locked>> | 96% | 57,290 psi | 90% | 2398 fps | 96% |
| Accurate 2460ᴾ | <<locked>> | 100% | 52,373 psi | 82% | 2336 fps | 99% |
| Accurate 2495ᴾ | <<locked>> | 100% | 35,215 psi | 55% | 2149 fps | 99% |
| Accurate 2520ᴾ | <<locked>> | 100% | 45,252 psi | 71% | 2283 fps | 97.7% |
| Accurate 4064ᴾ | <<locked>> | 100% | 32,967 psi | 52% | 2116 fps | 96.1% |
| Accurate LT-30 | <<locked>> | 96% | 55,405 psi | 87% | 2264 fps | 99.8% |
| Accurate LT-32 | <<locked>> | 96% | 55,999 psi | 88% | 2274 fps | 99% |
| ADI APS 450 | <<locked>> | 82% | 56,405 psi | 88% | 1677 fps | 100% |
| ADI AR 2205 | <<locked>> | 84% | 56,956 psi | 89% | 2162 fps | 100% |
| ADI AR 2207 | <<locked>> | 96% | 57,479 psi | 90% | 2326 fps | 100% |
| ADI AR 2219 | <<locked>> | 98% | 56,304 psi | 88% | 2395 fps | 99.9% |
| ADI Benchmark 8208ᴾ | <<locked>> | 100% | 46,789 psi | 73% | 2257 fps | 96% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 43,453 psi | 68% | 2270 fps | 100% |
| Alliant Power Pro 1200-Rᴾ | <<locked>> | 100% | 52,939 psi | 83% | 2421 fps | 96.9% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 54,099 psi | 85% | 2343 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 94% | 56,391 psi | 88% | 2306 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 98% | 56,579 psi | 89% | 2300 fps | 99.9% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 50,154 psi | 79% | 2260 fps | 97.3% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 43,555 psi | 68% | 2270 fps | 96.1% |
| Hodgdon CFE BLK | <<locked>> | 82% | 55,912 psi | 88% | 2320 fps | 97.6% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 54,070 psi | 85% | 2372 fps | 99.8% |
| Hodgdon H335ᴾ | <<locked>> | 100% | 54,853 psi | 86% | 2388 fps | 99.4% |
| Hodgdon H4198 | <<locked>> | 94% | 57,493 psi | 90% | 2303 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,517 psi | 49% | 1325 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 41,423 psi | 65% | 2257 fps | 99.1% |
| IMR 4198ᴾ | <<locked>> | 100% | 56,217 psi | 88% | 2316 fps | 100% |
| IMR 4227 | <<locked>> | 90% | 57,537 psi | 90% | 2260 fps | 100% |
| IMR 8208 XBRᴾ | <<locked>> | 100% | 46,789 psi | 73% | 2257 fps | 96% |
| Lovex D060 | <<locked>> | 84% | 57,464 psi | 90% | 2297 fps | 100% |
| Lovex D073.4 | <<locked>> | 94% | 54,157 psi | 85% | 2359 fps | 98.8% |
| Lovex D073.5ᴾ | <<locked>> | 100% | 52,257 psi | 82% | 2333 fps | 98% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 39,639 psi | 62% | 2211 fps | 96.5% |
| Lovex S053 | <<locked>> | 90% | 55,579 psi | 87% | 2211 fps | 100% |
| Norma 200 | <<locked>> | 96% | 54,520 psi | 85% | 2326 fps | 100% |
| Norma 202ᴾ | <<locked>> | 100% | 41,974 psi | 66% | 2218 fps | 97.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,560 psi | 49% | 1362 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 90% | 57,479 psi | 90% | 2297 fps | 100% |
| ReloadSwiss RS 40ᴾ | <<locked>> | 100% | 53,780 psi | 84% | 2349 fps | 98.6% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 46,485 psi | 73% | 2247 fps | 98.3% |
| Shooters World AR Plus | <<locked>> | 94% | 54,157 psi | 85% | 2359 fps | 98.8% |
| Shooters World Buffalo Rifle | <<locked>> | 84% | 57,464 psi | 90% | 2297 fps | 100% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 39,639 psi | 62% | 2211 fps | 96.5% |
| Shooters World SOCOM | <<locked>> | 82% | 55,347 psi | 87% | 2241 fps | 100% |
| Shooters World Tactical Rifle | <<locked>> | 98% | 54,911 psi | 86% | 2316 fps | 97% |
| SNPE Vectan BA6 1/2 | <<locked>> | 94% | 56,594 psi | 89% | 2087 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 98% | 56,275 psi | 88% | 2398 fps | 99.5% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 55,840 psi | 88% | 2352 fps | 100% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 46,383 psi | 73% | 2188 fps | 98.2% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 37,043 psi | 58% | 2064 fps | 97.3% |
| Somchem S321ᴾ | <<locked>> | 100% | 50,401 psi | 79% | 2333 fps | 97.1% |
| Somchem S335ᴾ | <<locked>> | 100% | 44,440 psi | 70% | 2192 fps | 98.7% |
| Vihtavuori N110 | <<locked>> | 84% | 55,129 psi | 86% | 2129 fps | 100% |
| Vihtavuori N120 | <<locked>> | 96% | 57,537 psi | 90% | 2280 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 52,214 psi | 82% | 2264 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 45,324 psi | 71% | 2192 fps | 99.7% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 37,376 psi | 59% | 2156 fps | 99.2% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 39,885 psi | 63% | 2159 fps | 97.5% |
| Vihtavuori N530ᴾ | <<locked>> | 100% | 46,818 psi | 73% | 2251 fps | 96.1% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 38,406 psi | 60% | 2152 fps | 96.6% |
| Winchester 748ᴾ | <<locked>> | 100% | 44,918 psi | 70% | 2283 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% | 39,740 psi | 62% | 2064 fps | 99.7% |
| Accurate 2015 | <<locked>> | 80% | 25,382 psi | 40% | 1864 fps | 95.4% |
| Accurate 2200 | <<locked>> | 94% | 53,911 psi | 84% | 2349 fps | 95% |
| Accurate 2230 | <<locked>> | 94% | 53,388 psi | 84% | 2352 fps | 95.3% |
| Accurate 2460 | <<locked>> | 88% | 34,722 psi | 54% | 2077 fps | 95.5% |
| Accurate 2495 | <<locked>> | 88% | 23,525 psi | 37% | 1900 fps | 95.2% |
| Accurate 2520 | <<locked>> | 92% | 34,563 psi | 54% | 2113 fps | 95% |
| Accurate 4064 | <<locked>> | 98% | 30,777 psi | 48% | 2073 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 80% | 34,069 psi | 53% | 1955 fps | 96.8% |
| Accurate LT-32 | <<locked>> | 82% | 36,767 psi | 58% | 2001 fps | 95.4% |
| ADI APS 450 | <<locked>> | 80% | 54,853 psi | 86% | 1657 fps | 100% |
| ADI AR 2205 | <<locked>> | 80% | 50,676 psi | 79% | 2096 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 35,520 psi | 56% | 2044 fps | 100% |
| ADI AR 2219 | 20 gr | 80% | 31,256 psi | 49% | 2011 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 98% | 43,845 psi | 69% | 2215 fps | 95.3% |
| Alliant AR-Comp | <<locked>> | 80% | 23,554 psi | 37% | 1867 fps | 97% |
| Alliant Power Pro 1200-R | <<locked>> | 96% | 46,325 psi | 73% | 2329 fps | 95.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 29,733 psi | 47% | 1969 fps | 98.2% |
| Alliant Reloder-7 | <<locked>> | 80% | 36,869 psi | 58% | 2044 fps | 99.7% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 32,010 psi | 50% | 1949 fps | 96.5% |
| Hodgdon Benchmark | <<locked>> | 94% | 42,148 psi | 66% | 2146 fps | 95.6% |
| Hodgdon BL-C2 | <<locked>> | 98% | 40,321 psi | 63% | 2221 fps | 95.2% |
| Hodgdon CFE BLK | <<locked>> | 80% | 52,402 psi | 82% | 2274 fps | 97.1% |
| Hodgdon H322 | <<locked>> | 82% | 30,472 psi | 48% | 1991 fps | 95.3% |
| Hodgdon H335 | <<locked>> | 86% | 34,664 psi | 54% | 2087 fps | 95.6% |
| Hodgdon H4198 | <<locked>> | 80% | 37,550 psi | 59% | 2028 fps | 97.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,308 psi | 37% | 1184 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 28,834 psi | 45% | 2008 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 31,633 psi | 50% | 1959 fps | 99.2% |
| IMR 4227 | <<locked>> | 80% | 42,888 psi | 67% | 2087 fps | 100% |
| IMR 8208 XBR | <<locked>> | 98% | 43,845 psi | 69% | 2215 fps | 95.3% |
| Lovex D060 | <<locked>> | 80% | 51,198 psi | 80% | 2224 fps | 100% |
| Lovex D073.4 | 21.3 gr | 82% | 35,650 psi | 56% | 2090 fps | 95% |
| Lovex D073.5 | <<locked>> | 92% | 40,016 psi | 63% | 2165 fps | 95.6% |
| Lovex D073.6 | <<locked>> | 96% | 34,708 psi | 54% | 2126 fps | 95% |
| Lovex S053 | <<locked>> | 80% | 41,785 psi | 65% | 2047 fps | 100% |
| Norma 200 | <<locked>> | 80% | 33,286 psi | 52% | 2024 fps | 99.4% |
| Norma 202 | <<locked>> | 92% | 32,866 psi | 52% | 2060 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,047 psi | 36% | 1211 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 42,177 psi | 66% | 2113 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 36,463 psi | 57% | 2096 fps | 95% |
| Rottweil R 901 | <<locked>> | 90% | 34,751 psi | 54% | 2057 fps | 95.5% |
| Shooters World AR Plus | 21.3 gr | 82% | 35,650 psi | 56% | 2090 fps | 95% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 51,198 psi | 80% | 2224 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 96% | 34,708 psi | 54% | 2126 fps | 95% |
| Shooters World SOCOM | <<locked>> | 80% | 51,851 psi | 81% | 2201 fps | 100% |
| Shooters World Tactical Rifle | <<locked>> | 92% | 44,991 psi | 71% | 2192 fps | 95% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 39,363 psi | 62% | 1893 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 33,417 psi | 52% | 2057 fps | 95.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 30,342 psi | 48% | 1962 fps | 96.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 34,156 psi | 54% | 1998 fps | 95.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 30,980 psi | 49% | 1952 fps | 95.4% |
| Somchem S321 | <<locked>> | 94% | 41,495 psi | 65% | 2205 fps | 95.2% |
| Somchem S335 | <<locked>> | 88% | 30,879 psi | 48% | 1959 fps | 95.4% |
| Vihtavuori N110 | <<locked>> | 80% | 49,458 psi | 78% | 2067 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 35,723 psi | 56% | 2014 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 28,660 psi | 45% | 1896 fps | 97.6% |
| Vihtavuori N133 | <<locked>> | 82% | 26,658 psi | 42% | 1860 fps | 95.6% |
| Vihtavuori N135 | <<locked>> | 86% | 24,642 psi | 39% | 1883 fps | 95% |
| Vihtavuori N140 | <<locked>> | 94% | 33,373 psi | 52% | 2044 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 98% | 44,425 psi | 70% | 2218 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 96% | 33,866 psi | 53% | 2070 fps | 95.1% |
| Winchester 748 | <<locked>> | 96% | 39,566 psi | 62% | 2195 fps | 95.1% |
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 63 powders for 7 x 44 Penna loaded with the .277 | 140gr | Winchester Silvertip. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,421 fps; across all powders the maximum-charge window runs from 1,325 fps to 2,421 fps. Accurate 2015 gives the best case fill at 100 %, and 63 of the 63 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 140.0 gr projectile in 0.277" calls for a 1:14.5 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, ADI AR 2219 rank at the top here: for 7 x 44 Penna with the .277 | 140gr | Winchester Silvertip 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.