Load Specifications
Load data in caliber 7 x 49 GJW with .284 | 139gr | Sellier & Bellot SPRN bullet and 57 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are SNPE Vectan SP 3, SNPE Vectan BA6 1/2 and Baschieri & Pellagri 102 Pistol.
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 ≥ 60% and propellant combustion ≥ 80%. 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 4100² | <<locked>> | 68% | 53,954 psi | 85% | 2306 fps | 100% |
| Accurate No. 11 FS² | <<locked>> | 76% | 55,869 psi | 88% | 2408 fps | 100% |
| Accurate No. 2² | <<locked>> | 64% | 57,682 psi | 90% | 1965 fps | 100% |
| Accurate Solo 1000² | <<locked>> | 72% | 54,679 psi | 86% | 1857 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 72% | 57,508 psi | 90% | 1913 fps | 100% |
| ADI AP 100² | <<locked>> | 76% | 56,202 psi | 88% | 2100 fps | 100% |
| ADI APS 350 | <<locked>> | 80% | 55,056 psi | 86% | 1795 fps | 100% |
| ADI APS 450 | <<locked>> | 80% | 55,579 psi | 87% | 1837 fps | 100% |
| ADI AS 30² | <<locked>> | 76% | 55,796 psi | 87% | 1847 fps | 100% |
| ADI AS 50N² | <<locked>> | 68% | 55,114 psi | 86% | 1870 fps | 100% |
| Alliant 2400² | <<locked>> | 68% | 57,072 psi | 89% | 2333 fps | 100% |
| Alliant BE-86² | <<locked>> | 68% | 53,795 psi | 84% | 1864 fps | 100% |
| Alliant BLUE DOT² | <<locked>> | 72% | 55,071 psi | 86% | 2224 fps | 100% |
| Alliant Green Dot² | <<locked>> | 72% | 55,651 psi | 87% | 1883 fps | 100% |
| Alliant Herco | <<locked>> | 80% | 56,478 psi | 89% | 1998 fps | 100% |
| Alliant Power Pro 300-MP² | <<locked>> | 68% | 53,417 psi | 84% | 2369 fps | 100% |
| Alliant RED DOT² | <<locked>> | 76% | 55,361 psi | 87% | 1864 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 68% | 57,450 psi | 90% | 2008 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 68% | 53,476 psi | 84% | 1811 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 84% | 53,780 psi | 84% | 1831 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 64% | 54,737 psi | 86% | 1854 fps | 100% |
| Hodgdon Clays | <<locked>> | 88% | 54,592 psi | 86% | 1814 fps | 100% |
| Hodgdon H110² | <<locked>> | 68% | 54,708 psi | 86% | 2398 fps | 100% |
| Hodgdon LilGun² | <<locked>> | 68% | 51,227 psi | 80% | 2320 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,880 psi | 52% | 1480 fps | 100% |
| Hodgdon Universal² | <<locked>> | 64% | 54,578 psi | 86% | 1906 fps | 100% |
| IMR 4227 | <<locked>> | 84% | 53,867 psi | 84% | 2408 fps | 100% |
| Maxam CSB 1² | <<locked>> | 72% | 53,824 psi | 84% | 1864 fps | 100% |
| Maxam CSB 2² | <<locked>> | 68% | 54,839 psi | 86% | 1867 fps | 100% |
| Maxam CSB 3² | <<locked>> | 72% | 55,550 psi | 87% | 1877 fps | 100% |
| Maxam CSB 4² | <<locked>> | 72% | 56,536 psi | 89% | 1880 fps | 100% |
| Maxam CSB 5² | <<locked>> | 72% | 56,434 psi | 88% | 1844 fps | 100% |
| Ramshot Enforcer² | <<locked>> | 64% | 52,185 psi | 82% | 2260 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,822 psi | 51% | 1516 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 68% | 57,508 psi | 90% | 1969 fps | 100% |
| ReloadSwiss RS 30 | <<locked>> | 84% | 53,505 psi | 84% | 2382 fps | 100% |
| SNPE Vectan A0² | <<locked>> | 72% | 56,637 psi | 89% | 1939 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 68% | 55,738 psi | 87% | 1896 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 68% | 57,000 psi | 89% | 1919 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 76% | 57,348 psi | 90% | 1857 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 88% | 53,185 psi | 83% | 2224 fps | 100% |
| SNPE Vectan BA7 1/2² | <<locked>> | 72% | 56,550 psi | 89% | 2024 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 68% | 56,347 psi | 88% | 1919 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 56,681 psi | 89% | 2556 fps | 100% |
| Somchem MS200² | <<locked>> | 68% | 56,144 psi | 88% | 1959 fps | 100% |
| Somchem S265 | <<locked>> | 80% | 52,750 psi | 83% | 2306 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 64% | 55,753 psi | 87% | 2021 fps | 100% |
| Vihtavuori 3N38² | <<locked>> | 68% | 52,025 psi | 82% | 2106 fps | 100% |
| Vihtavuori N105² | <<locked>> | 68% | 53,011 psi | 83% | 2100 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 54,752 psi | 86% | 2300 fps | 100% |
| Vihtavuori N320² | <<locked>> | 64% | 53,040 psi | 83% | 1818 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 52,460 psi | 82% | 1729 fps | 100% |
| Vihtavuori N330² | <<locked>> | 64% | 57,609 psi | 90% | 1913 fps | 100% |
| Vihtavuori N340² | <<locked>> | 64% | 53,026 psi | 83% | 1906 fps | 100% |
| Vihtavuori N350² | <<locked>> | 68% | 55,129 psi | 86% | 2001 fps | 100% |
| Winchester 296² | <<locked>> | 68% | 52,040 psi | 82% | 2425 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 68% | 52,663 psi | 83% | 1880 fps | 100% |
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 4100² | <<locked>> | 60% | 41,249 psi | 65% | 2136 fps | 100% |
| Accurate No. 11 FS² | <<locked>> | 60% | 32,677 psi | 51% | 2060 fps | 100% |
| Accurate No. 2² | <<locked>> | 60% | 51,750 psi | 81% | 1900 fps | 100% |
| Accurate Solo 1000² | <<locked>> | 60% | 42,250 psi | 66% | 1690 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 43,178 psi | 68% | 1736 fps | 100% |
| ADI AP 100² | <<locked>> | 60% | 37,304 psi | 58% | 1847 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 37,840 psi | 59% | 1552 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 37,594 psi | 59% | 1585 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 40,451 psi | 63% | 1637 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 46,586 psi | 73% | 1759 fps | 100% |
| Alliant 2400² | <<locked>> | 60% | 44,324 psi | 69% | 2172 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 44,019 psi | 69% | 1742 fps | 100% |
| Alliant BLUE DOT² | <<locked>> | 60% | 39,189 psi | 61% | 2008 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 43,149 psi | 68% | 1716 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 35,926 psi | 56% | 1716 fps | 100% |
| Alliant Power Pro 300-MP² | <<locked>> | 60% | 40,683 psi | 64% | 2192 fps | 100% |
| Alliant RED DOT² | <<locked>> | 60% | 39,798 psi | 62% | 1647 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 47,036 psi | 74% | 1877 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 43,816 psi | 69% | 1690 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | 11.1 gr | 60% | 31,734 psi | 50% | 1529 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 49,313 psi | 77% | 1791 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 32,692 psi | 51% | 1493 fps | 100% |
| Hodgdon H110² | <<locked>> | 60% | 41,626 psi | 65% | 2221 fps | 100% |
| Hodgdon LilGun² | <<locked>> | 60% | 38,827 psi | 61% | 2149 fps | 100% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 16,679 psi | 26% | 1138 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 49,705 psi | 78% | 1844 fps | 100% |
| IMR 4227² | <<locked>> | 60% | 25,498 psi | 40% | 1913 fps | 99.1% |
| Maxam CSB 1² | <<locked>> | 60% | 40,698 psi | 64% | 1693 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 45,310 psi | 71% | 1745 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 42,612 psi | 67% | 1709 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 43,381 psi | 68% | 1706 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 43,816 psi | 69% | 1677 fps | 100% |
| Ramshot Enforcer² | <<locked>> | 60% | 45,600 psi | 71% | 2175 fps | 100% |
| ReloadSwiss RS 14² | <<locked>> | 60% | 16,534 psi | 26% | 1165 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 47,094 psi | 74% | 1844 fps | 100% |
| ReloadSwiss RS 30² | <<locked>> | 60% | 25,280 psi | 40% | 1926 fps | 100% |
| SNPE Vectan A0² | <<locked>> | 60% | 42,801 psi | 67% | 1765 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 46,369 psi | 73% | 1781 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 47,195 psi | 74% | 1801 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 41,162 psi | 65% | 1640 fps | 100% |
| SNPE Vectan BA6 1/2² | 15.6 gr | 60% | 24,511 psi | 38% | 1775 fps | 100% |
| SNPE Vectan BA7 1/2² | <<locked>> | 60% | 41,437 psi | 65% | 1834 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 46,876 psi | 73% | 1801 fps | 100% |
| SNPE Vectan SP 3*² | 17.9 gr | 60% | 18,159 psi | 28% | 1752 fps | 89.3% |
| Somchem MS200² | <<locked>> | 60% | 46,528 psi | 73% | 1837 fps | 100% |
| Somchem S265² | <<locked>> | 60% | 29,240 psi | 46% | 1926 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 60% | 49,821 psi | 78% | 1952 fps | 100% |
| Vihtavuori 3N38² | <<locked>> | 60% | 41,336 psi | 65% | 1965 fps | 100% |
| Vihtavuori N105² | <<locked>> | 60% | 41,568 psi | 65% | 1955 fps | 100% |
| Vihtavuori N110² | <<locked>> | 60% | 29,559 psi | 46% | 1929 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 47,935 psi | 75% | 1755 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 25,976 psi | 41% | 1335 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 52,373 psi | 82% | 1854 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 48,022 psi | 75% | 1847 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 44,483 psi | 70% | 1873 fps | 100% |
| Winchester 296² | <<locked>> | 60% | 39,465 psi | 62% | 2238 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 43,772 psi | 69% | 1765 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
* not dangerous but load has suboptimal powder burnt with possible characteristics such as extensive muzzle flash or inaccurate loads.
² fill rate low - you might want to consider using a filler to ensure proper ignition.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 57 powders for 7 x 49 GJW loaded with the .284 | 139gr | Sellier & Bellot SPRN. SNPE Vectan SP 3 delivers the highest muzzle velocity at 2,556 fps; across all powders the maximum-charge window runs from 1,480 fps to 2,556 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 14 of the 57 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 51–90 %, leaving at least 10 % headroom. The 139.0 gr projectile in 0.284" calls for a 1:15.0 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, ReloadSwiss RS 14, Vihtavuori N32C Tin Star 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 3, SNPE Vectan BA6 1/2, Baschieri & Pellagri 102 Pistol rank at the top here: for 7 x 49 GJW with the .284 | 139gr | Sellier & Bellot SPRN 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.