Load Specifications
Load data in caliber 7 x 44 Penna with .277 | 150gr | Winchester Powerpoint bullet and 70 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are SNPE Vectan SP 10, Hodgdon H335 and Alliant Power Pro 1200-R.
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>> | 88% | 54,128 psi | 85% | 2172 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 50,024 psi | 78% | 2201 fps | 100% |
| Accurate 2200 | <<locked>> | 94% | 57,174 psi | 90% | 2313 fps | 96.6% |
| Accurate 2230 | <<locked>> | 94% | 57,087 psi | 89% | 2320 fps | 97% |
| Accurate 2460ᴾ | <<locked>> | 100% | 56,144 psi | 88% | 2297 fps | 99.7% |
| Accurate 2495ᴾ | <<locked>> | 100% | 38,406 psi | 60% | 2119 fps | 99.8% |
| Accurate 2520ᴾ | <<locked>> | 100% | 46,586 psi | 73% | 2234 fps | 98.6% |
| Accurate 2520ᴾ | <<locked>> | 100% | 46,586 psi | 73% | 2234 fps | 98.6% |
| Accurate 4064ᴾ | <<locked>> | 100% | 35,868 psi | 56% | 2096 fps | 97.8% |
| Accurate LT-30 | <<locked>> | 94% | 54,650 psi | 86% | 2178 fps | 100% |
| Accurate LT-32 | <<locked>> | 94% | 55,230 psi | 87% | 2192 fps | 99.4% |
| ADI APS 450 | <<locked>> | 82% | 56,782 psi | 89% | 1621 fps | 100% |
| ADI AR 2205 | <<locked>> | 82% | 56,376 psi | 88% | 2077 fps | 100% |
| ADI AR 2207 | <<locked>> | 94% | 57,087 psi | 89% | 2234 fps | 100% |
| ADI AR 2219 | <<locked>> | 96% | 56,057 psi | 88% | 2310 fps | 100% |
| ADI Benchmark 8208ᴾ | <<locked>> | 100% | 49,777 psi | 78% | 2224 fps | 97.5% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 46,470 psi | 73% | 2228 fps | 100% |
| Alliant Power Pro 1200-Rᴾ | <<locked>> | 100% | 56,724 psi | 89% | 2385 fps | 98.3% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 57,580 psi | 90% | 2290 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 92% | 55,927 psi | 88% | 2218 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 96% | 56,217 psi | 88% | 2218 fps | 100% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 53,026 psi | 83% | 2221 fps | 98.5% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 46,673 psi | 73% | 2244 fps | 97.7% |
| Hodgdon CFE223ᴾ | <<locked>> | 100% | 53,011 psi | 83% | 2349 fps | 96.1% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 52,475 psi | 82% | 2270 fps | 99.9% |
| Hodgdon H335 | <<locked>> | 96% | 54,868 psi | 86% | 2306 fps | 99.8% |
| Hodgdon H4198 | <<locked>> | 94% | 55,999 psi | 88% | 2208 fps | 99.9% |
| Hodgdon H4895ᴾ | <<locked>> | 100% | 46,673 psi | 73% | 2218 fps | 96.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,952 psi | 50% | 1283 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 39,871 psi | 62% | 2156 fps | 99.4% |
| IMR 4198 | <<locked>> | 98% | 56,347 psi | 88% | 2231 fps | 100% |
| IMR 4227 | <<locked>> | 88% | 57,290 psi | 90% | 2175 fps | 100% |
| IMR 8208 XBRᴾ | <<locked>> | 100% | 49,777 psi | 78% | 2224 fps | 97.5% |
| Lovex D060 | <<locked>> | 82% | 56,231 psi | 88% | 2201 fps | 100% |
| Lovex D073.4 | <<locked>> | 92% | 53,403 psi | 84% | 2270 fps | 99.2% |
| Lovex D073.5ᴾ | <<locked>> | 100% | 56,043 psi | 88% | 2300 fps | 99.1% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 42,844 psi | 67% | 2185 fps | 98.1% |
| Lovex S053 | <<locked>> | 88% | 55,477 psi | 87% | 2126 fps | 100% |
| Lovex S060ᴾ | <<locked>> | 100% | 48,747 psi | 76% | 2159 fps | 95.9% |
| Norma 200 | <<locked>> | 94% | 54,476 psi | 85% | 2241 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 45,498 psi | 71% | 2172 fps | 96.9% |
| Norma 202ᴾ | <<locked>> | 100% | 44,947 psi | 70% | 2185 fps | 98.9% |
| Ramshot Wild Boarᴾ | <<locked>> | 100% | 48,370 psi | 76% | 2238 fps | 95.8% |
| Ramshot X-Terminatorᴾ | <<locked>> | 100% | 55,550 psi | 87% | 2270 fps | 96.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,082 psi | 50% | 1319 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 88% | 56,826 psi | 89% | 2205 fps | 100% |
| ReloadSwiss RS 40ᴾ | <<locked>> | 100% | 57,188 psi | 90% | 2310 fps | 99.5% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 49,516 psi | 78% | 2211 fps | 99.2% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 42,554 psi | 67% | 2119 fps | 96.1% |
| Shooters World AR Plus | <<locked>> | 92% | 53,403 psi | 84% | 2270 fps | 99.2% |
| Shooters World Buffalo Rifle | <<locked>> | 82% | 56,231 psi | 88% | 2201 fps | 100% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 42,844 psi | 67% | 2185 fps | 98.1% |
| Shooters World Tactical Rifle | <<locked>> | 96% | 54,549 psi | 85% | 2241 fps | 97.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 92% | 56,217 psi | 88% | 2001 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 96% | 56,260 psi | 88% | 2316 fps | 99.8% |
| SNPE Vectan SP 3 | <<locked>> | 98% | 55,550 psi | 87% | 2264 fps | 100% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 49,197 psi | 77% | 2152 fps | 99.2% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 39,291 psi | 62% | 2034 fps | 98.6% |
| Somchem S321ᴾ | <<locked>> | 100% | 53,867 psi | 84% | 2300 fps | 98.4% |
| Somchem S335ᴾ | <<locked>> | 100% | 47,282 psi | 74% | 2152 fps | 99.5% |
| Vihtavuori N110 | <<locked>> | 84% | 57,740 psi | 90% | 2070 fps | 100% |
| Vihtavuori N120 | <<locked>> | 94% | 57,101 psi | 89% | 2192 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 55,347 psi | 87% | 2218 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 48,211 psi | 76% | 2152 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 40,103 psi | 63% | 2123 fps | 99.8% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 42,511 psi | 67% | 2129 fps | 98.7% |
| Vihtavuori N530ᴾ | <<locked>> | 100% | 49,937 psi | 78% | 2221 fps | 97.6% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 40,959 psi | 64% | 2126 fps | 98% |
| Winchester 748ᴾ | <<locked>> | 100% | 52,402 psi | 82% | 2310 fps | 98.7% |
| Winchester StaBALL Match | <<locked>> | 98% | 53,534 psi | 84% | 2306 fps | 97.4% |
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% | 41,887 psi | 66% | 2024 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 27,166 psi | 43% | 1837 fps | 97.1% |
| Accurate 2200 | <<locked>> | 90% | 50,111 psi | 79% | 2228 fps | 95.3% |
| Accurate 2230 | <<locked>> | 90% | 49,893 psi | 78% | 2234 fps | 95.7% |
| Accurate 2460 | <<locked>> | 82% | 30,632 psi | 48% | 1929 fps | 95.1% |
| Accurate 2495 | <<locked>> | 82% | 21,205 psi | 33% | 1768 fps | 95% |
| Accurate 2520 | <<locked>> | 90% | 32,793 psi | 51% | 2021 fps | 95.4% |
| Accurate 2520 | <<locked>> | 90% | 32,793 psi | 51% | 2021 fps | 95.4% |
| Accurate 4064 | <<locked>> | 92% | 27,789 psi | 44% | 1939 fps | 95.1% |
| Accurate LT-30 | <<locked>> | 80% | 35,839 psi | 56% | 1923 fps | 98.1% |
| Accurate LT-32 | <<locked>> | 80% | 36,245 psi | 57% | 1926 fps | 96.2% |
| ADI APS 450 | <<locked>> | 80% | 55,230 psi | 87% | 1604 fps | 100% |
| ADI AR 2205 | <<locked>> | 80% | 52,852 psi | 83% | 2041 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 37,753 psi | 59% | 2001 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 33,156 psi | 52% | 1982 fps | 97.3% |
| ADI Benchmark 8208 | <<locked>> | 94% | 41,104 psi | 64% | 2103 fps | 95.7% |
| Alliant AR-Comp | <<locked>> | 80% | 25,019 psi | 39% | 1847 fps | 98.6% |
| Alliant Power Pro 1200-R | 21.8 gr | 90% | 41,249 psi | 65% | 2175 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 31,720 psi | 50% | 1936 fps | 99.2% |
| Alliant Reloder-7 | <<locked>> | 80% | 39,001 psi | 61% | 2005 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 33,866 psi | 53% | 1916 fps | 97.9% |
| Hodgdon Benchmark | <<locked>> | 88% | 37,492 psi | 59% | 1998 fps | 95.3% |
| Hodgdon BL-C2 | <<locked>> | 94% | 37,971 psi | 60% | 2110 fps | 95.6% |
| Hodgdon CFE223 | <<locked>> | 98% | 49,139 psi | 77% | 2297 fps | 95.2% |
| Hodgdon H322 | <<locked>> | 80% | 28,369 psi | 44% | 1880 fps | 95.5% |
| Hodgdon H335 | 21.1 gr | 80% | 32,097 psi | 50% | 1969 fps | 95.8% |
| Hodgdon H4198 | <<locked>> | 80% | 37,521 psi | 59% | 1959 fps | 97.9% |
| Hodgdon H4895 | <<locked>> | 98% | 43,801 psi | 69% | 2175 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,670 psi | 37% | 1145 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 26,339 psi | 41% | 1883 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 33,344 psi | 52% | 1919 fps | 99.8% |
| IMR 4227 | <<locked>> | 80% | 45,049 psi | 71% | 2037 fps | 100% |
| IMR 8208 XBR | <<locked>> | 94% | 41,104 psi | 64% | 2103 fps | 95.7% |
| Lovex D060 | <<locked>> | 80% | 53,432 psi | 84% | 2169 fps | 100% |
| Lovex D073.4 | <<locked>> | 80% | 35,244 psi | 55% | 2011 fps | 95.9% |
| Lovex D073.5 | <<locked>> | 86% | 34,882 psi | 55% | 2008 fps | 95.1% |
| Lovex D073.6 | <<locked>> | 92% | 32,793 psi | 51% | 2021 fps | 95.4% |
| Lovex S053 | <<locked>> | 80% | 43,918 psi | 69% | 1998 fps | 100% |
| Lovex S060 | <<locked>> | 98% | 46,325 psi | 73% | 2126 fps | 95.3% |
| Norma 200 | <<locked>> | 80% | 35,505 psi | 56% | 1988 fps | 99.9% |
| Norma 201 | <<locked>> | 96% | 39,958 psi | 63% | 2087 fps | 95.5% |
| Norma 202 | <<locked>> | 88% | 30,850 psi | 48% | 1949 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 98% | 45,469 psi | 71% | 2195 fps | 95.1% |
| Ramshot X-Terminator | <<locked>> | 94% | 46,122 psi | 72% | 2149 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,453 psi | 37% | 1171 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 44,512 psi | 70% | 2064 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 34,127 psi | 53% | 1985 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 84% | 31,053 psi | 49% | 1913 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 98% | 39,885 psi | 63% | 2080 fps | 95.4% |
| Shooters World AR Plus | <<locked>> | 80% | 35,244 psi | 55% | 2011 fps | 95.9% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 53,432 psi | 84% | 2169 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 92% | 32,793 psi | 51% | 2021 fps | 95.4% |
| Shooters World Tactical Rifle | <<locked>> | 88% | 41,974 psi | 66% | 2077 fps | 95.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 41,191 psi | 65% | 1841 fps | 100% |
| SNPE Vectan SP 10 | 20.7 gr | 80% | 33,402 psi | 52% | 1988 fps | 96.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 32,184 psi | 50% | 1932 fps | 97.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 32,155 psi | 50% | 1893 fps | 95.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 27,412 psi | 43% | 1814 fps | 95% |
| Somchem S321 | <<locked>> | 90% | 38,537 psi | 60% | 2087 fps | 95.4% |
| Somchem S335 | <<locked>> | 82% | 27,485 psi | 43% | 1821 fps | 95% |
| Vihtavuori N110 | <<locked>> | 80% | 51,837 psi | 81% | 2011 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 37,942 psi | 59% | 1969 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 30,429 psi | 48% | 1867 fps | 98.7% |
| Vihtavuori N133 | <<locked>> | 80% | 26,484 psi | 42% | 1795 fps | 96.5% |
| Vihtavuori N135 | <<locked>> | 82% | 23,395 psi | 37% | 1788 fps | 95.4% |
| Vihtavuori N140 | <<locked>> | 88% | 29,385 psi | 46% | 1896 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 92% | 38,783 psi | 61% | 2060 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 92% | 31,865 psi | 50% | 1965 fps | 95.5% |
| Winchester 748 | <<locked>> | 90% | 37,652 psi | 59% | 2093 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 92% | 43,584 psi | 68% | 2175 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 70 powders for 7 x 44 Penna loaded with the .277 | 150gr | Winchester Powerpoint. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,385 fps; across all powders the maximum-charge window runs from 1,283 fps to 2,385 fps. Accurate 2015 gives the best case fill at 100 %, and 70 of the 70 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 50–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.277" calls for a 1:15.0 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. SNPE Vectan SP 10, Hodgdon H335, Alliant Power Pro 1200-R rank at the top here: for 7 x 44 Penna with the .277 | 150gr | Winchester Powerpoint 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.