Load Specifications
Load data in caliber 7 x 49 GJW with .284 | 170gr | Geco PLUS bullet and 54 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 Hodgdon Clays.
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>> | 64% | 50,720 psi | 79% | 1991 fps | 100% |
| Accurate No. 11 FS² | <<locked>> | 72% | 52,968 psi | 83% | 2093 fps | 100% |
| Accurate Solo 1000² | <<locked>> | 72% | 55,637 psi | 87% | 1647 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 68% | 53,751 psi | 84% | 1644 fps | 100% |
| ADI AP 100² | <<locked>> | 72% | 53,374 psi | 84% | 1814 fps | 100% |
| ADI APS 350 | <<locked>> | 80% | 55,303 psi | 87% | 1588 fps | 100% |
| ADI APS 450 | <<locked>> | 80% | 56,434 psi | 88% | 1631 fps | 100% |
| ADI AS 30² | <<locked>> | 76% | 56,507 psi | 89% | 1637 fps | 100% |
| ADI AS 50N² | <<locked>> | 68% | 56,115 psi | 88% | 1657 fps | 100% |
| Alliant 2400² | <<locked>> | 64% | 53,650 psi | 84% | 2014 fps | 100% |
| Alliant BE-86² | <<locked>> | 68% | 54,868 psi | 86% | 1654 fps | 100% |
| Alliant BLUE DOT² | <<locked>> | 68% | 52,707 psi | 83% | 1929 fps | 100% |
| Alliant Green Dot² | <<locked>> | 72% | 56,710 psi | 89% | 1670 fps | 100% |
| Alliant Herco² | <<locked>> | 76% | 53,490 psi | 84% | 1726 fps | 100% |
| Alliant Power Pro 300-MP² | <<locked>> | 68% | 57,377 psi | 90% | 2126 fps | 100% |
| Alliant RED DOT² | <<locked>> | 76% | 55,898 psi | 88% | 1650 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 64% | 53,650 psi | 84% | 1726 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 68% | 54,070 psi | 85% | 1598 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 84% | 55,042 psi | 86% | 1627 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 64% | 55,651 psi | 87% | 1644 fps | 100% |
| Hodgdon Clays | <<locked>> | 88% | 55,492 psi | 87% | 1614 fps | 100% |
| Hodgdon H110² | <<locked>> | 64% | 51,677 psi | 81% | 2080 fps | 100% |
| Hodgdon LilGun² | <<locked>> | 68% | 55,622 psi | 87% | 2083 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,446 psi | 52% | 1309 fps | 100% |
| Hodgdon Universal² | <<locked>> | 64% | 56,130 psi | 88% | 1693 fps | 100% |
| IMR 4227 | <<locked>> | 80% | 51,851 psi | 81% | 2103 fps | 100% |
| Maxam CSB 1² | <<locked>> | 72% | 54,926 psi | 86% | 1650 fps | 100% |
| Maxam CSB 2² | <<locked>> | 68% | 56,333 psi | 88% | 1657 fps | 100% |
| Maxam CSB 3² | <<locked>> | 72% | 56,942 psi | 89% | 1670 fps | 100% |
| Maxam CSB 4² | <<locked>> | 72% | 57,014 psi | 89% | 1660 fps | 100% |
| Maxam CSB 5² | <<locked>> | 72% | 57,087 psi | 89% | 1634 fps | 100% |
| Ramshot Enforcer² | <<locked>> | 64% | 55,811 psi | 87% | 2024 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,562 psi | 53% | 1342 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 64% | 53,983 psi | 85% | 1693 fps | 100% |
| ReloadSwiss RS 30 | <<locked>> | 80% | 51,982 psi | 81% | 2077 fps | 100% |
| SNPE Vectan A0² | <<locked>> | 68% | 53,316 psi | 84% | 1670 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 68% | 56,739 psi | 89% | 1683 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 64% | 53,084 psi | 83% | 1650 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 76% | 57,711 psi | 90% | 1647 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 88% | 57,130 psi | 90% | 1995 fps | 100% |
| SNPE Vectan BA7 1/2² | <<locked>> | 68% | 52,997 psi | 83% | 1742 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 68% | 57,725 psi | 90% | 1703 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 92% | 55,172 psi | 86% | 2247 fps | 100% |
| Somchem MS200² | <<locked>> | 64% | 53,040 psi | 83% | 1686 fps | 100% |
| Somchem S265 | <<locked>> | 80% | 56,797 psi | 89% | 2077 fps | 100% |
| Vihtavuori 3N38² | <<locked>> | 68% | 54,404 psi | 85% | 1873 fps | 100% |
| Vihtavuori N105² | <<locked>> | 68% | 56,217 psi | 88% | 1870 fps | 100% |
| Vihtavuori N110² | <<locked>> | 76% | 52,330 psi | 82% | 1998 fps | 100% |
| Vihtavuori N320² | <<locked>> | 64% | 53,838 psi | 84% | 1608 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 53,432 psi | 84% | 1535 fps | 100% |
| Vihtavuori N340² | <<locked>> | 64% | 55,201 psi | 87% | 1699 fps | 100% |
| Vihtavuori N350² | <<locked>> | 68% | 57,334 psi | 90% | 1781 fps | 100% |
| Winchester 296² | <<locked>> | 68% | 56,130 psi | 88% | 2182 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 68% | 54,563 psi | 86% | 1677 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% | 44,367 psi | 70% | 1919 fps | 100% |
| Accurate No. 11 FS² | <<locked>> | 60% | 35,476 psi | 56% | 1864 fps | 100% |
| Accurate Solo 1000² | <<locked>> | 60% | 43,424 psi | 68% | 1503 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 44,454 psi | 70% | 1539 fps | 100% |
| ADI AP 100² | <<locked>> | 60% | 39,363 psi | 62% | 1647 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 37,971 psi | 60% | 1368 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 38,130 psi | 60% | 1404 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 41,133 psi | 64% | 1450 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 47,471 psi | 74% | 1558 fps | 100% |
| Alliant 2400² | <<locked>> | 60% | 47,340 psi | 74% | 1942 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 45,353 psi | 71% | 1549 fps | 100% |
| Alliant BLUE DOT² | <<locked>> | 60% | 41,553 psi | 65% | 1791 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 43,801 psi | 69% | 1516 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 36,985 psi | 58% | 1519 fps | 100% |
| Alliant Power Pro 300-MP² | <<locked>> | 60% | 43,874 psi | 69% | 1972 fps | 100% |
| Alliant RED DOT² | <<locked>> | 60% | 40,959 psi | 64% | 1463 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 49,037 psi | 77% | 1670 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 44,889 psi | 70% | 1499 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 32,547 psi | 51% | 1355 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 50,314 psi | 79% | 1591 fps | 100% |
| Hodgdon Clays² | 8.4 gr | 60% | 32,924 psi | 52% | 1319 fps | 100% |
| Hodgdon H110² | <<locked>> | 60% | 44,875 psi | 70% | 1998 fps | 100% |
| Hodgdon LilGun² | <<locked>> | 60% | 42,424 psi | 66% | 1932 fps | 100% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 16,969 psi | 27% | 1004 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 50,778 psi | 80% | 1634 fps | 100% |
| IMR 4227² | <<locked>> | 60% | 27,514 psi | 43% | 1736 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 41,858 psi | 66% | 1499 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 46,572 psi | 73% | 1549 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 43,482 psi | 68% | 1512 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 44,672 psi | 70% | 1516 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 44,715 psi | 70% | 1490 fps | 100% |
| Ramshot Enforcer² | <<locked>> | 60% | 48,834 psi | 77% | 1949 fps | 100% |
| ReloadSwiss RS 14² | <<locked>> | 60% | 17,274 psi | 27% | 1037 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 48,733 psi | 76% | 1637 fps | 100% |
| ReloadSwiss RS 30² | <<locked>> | 60% | 27,789 psi | 44% | 1739 fps | 100% |
| SNPE Vectan A0² | <<locked>> | 60% | 44,048 psi | 69% | 1565 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 47,166 psi | 74% | 1575 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 48,167 psi | 75% | 1594 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 42,003 psi | 66% | 1457 fps | 100% |
| SNPE Vectan BA6 1/2² | 14.5 gr | 60% | 26,542 psi | 42% | 1594 fps | 100% |
| SNPE Vectan BA7 1/2² | <<locked>> | 60% | 43,163 psi | 68% | 1631 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 48,008 psi | 75% | 1594 fps | 100% |
| SNPE Vectan SP 3*² | 16.7 gr | 60% | 20,131 psi | 32% | 1627 fps | 94.1% |
| Somchem MS200² | <<locked>> | 60% | 47,877 psi | 75% | 1631 fps | 100% |
| Somchem S265² | <<locked>> | 60% | 31,531 psi | 49% | 1742 fps | 100% |
| Vihtavuori 3N38² | <<locked>> | 60% | 43,613 psi | 68% | 1752 fps | 100% |
| Vihtavuori N105² | <<locked>> | 60% | 44,585 psi | 70% | 1749 fps | 100% |
| Vihtavuori N110² | <<locked>> | 60% | 32,271 psi | 51% | 1736 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 48,979 psi | 77% | 1555 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 26,194 psi | 41% | 1175 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 49,734 psi | 78% | 1640 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 46,195 psi | 72% | 1663 fps | 100% |
| Winchester 296² | <<locked>> | 60% | 42,714 psi | 67% | 2018 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 44,831 psi | 70% | 1565 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 54 powders for 7 x 49 GJW loaded with the .284 | 170gr | Geco PLUS. SNPE Vectan SP 3 delivers the highest muzzle velocity at 2,247 fps; across all powders the maximum-charge window runs from 1,309 fps to 2,247 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 12 of the 54 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 52–90 %, leaving at least 10 % headroom. The 170.0 gr projectile in 0.284" calls for a 1:12.5 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, Hodgdon Clays rank at the top here: for 7 x 49 GJW with the .284 | 170gr | Geco PLUS they combine a high case fill with complete burn and sit in the upper velocity band. Hodgdon TrailBoss, ReloadSwiss RS 14 stay subsonic at start load. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.