Load Specifications
Load data in caliber 7 x 49 GJW with .284 | 158gr | Prvi Partizan Grom 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% | 53,983 psi | 85% | 2100 fps | 100% |
| Accurate No. 11 FS² | <<locked>> | 76% | 56,318 psi | 88% | 2201 fps | 100% |
| Accurate No. 2² | <<locked>> | 64% | 57,653 psi | 90% | 1781 fps | 100% |
| Accurate Solo 1000² | <<locked>> | 72% | 54,694 psi | 86% | 1683 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 72% | 57,595 psi | 90% | 1736 fps | 100% |
| ADI AP 100² | <<locked>> | 76% | 56,420 psi | 88% | 1909 fps | 100% |
| ADI APS 350 | <<locked>> | 80% | 55,376 psi | 87% | 1631 fps | 100% |
| ADI APS 450 | <<locked>> | 80% | 55,332 psi | 87% | 1663 fps | 100% |
| ADI AS 30² | <<locked>> | 76% | 55,680 psi | 87% | 1673 fps | 100% |
| ADI AS 50N² | <<locked>> | 68% | 55,085 psi | 86% | 1693 fps | 100% |
| Alliant 2400² | <<locked>> | 68% | 57,232 psi | 90% | 2126 fps | 100% |
| Alliant BE-86² | <<locked>> | 68% | 53,461 psi | 84% | 1686 fps | 100% |
| Alliant BLUE DOT² | <<locked>> | 72% | 55,259 psi | 87% | 2024 fps | 100% |
| Alliant Green Dot² | <<locked>> | 72% | 55,753 psi | 87% | 1709 fps | 100% |
| Alliant Herco | <<locked>> | 80% | 56,188 psi | 88% | 1811 fps | 100% |
| Alliant Power Pro 300-MP² | <<locked>> | 68% | 53,447 psi | 84% | 2159 fps | 100% |
| Alliant RED DOT² | <<locked>> | 76% | 54,940 psi | 86% | 1686 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 68% | 57,087 psi | 89% | 1818 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 68% | 53,026 psi | 83% | 1637 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 84% | 53,867 psi | 84% | 1663 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 64% | 54,839 psi | 86% | 1686 fps | 100% |
| Hodgdon Clays | <<locked>> | 88% | 54,389 psi | 85% | 1644 fps | 100% |
| Hodgdon H110² | <<locked>> | 68% | 54,737 psi | 86% | 2188 fps | 100% |
| Hodgdon LilGun² | <<locked>> | 68% | 51,996 psi | 81% | 2123 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,953 psi | 52% | 1342 fps | 100% |
| Hodgdon Universal² | <<locked>> | 64% | 54,969 psi | 86% | 1732 fps | 100% |
| IMR 4227 | <<locked>> | 84% | 54,056 psi | 85% | 2201 fps | 100% |
| Maxam CSB 1² | <<locked>> | 72% | 53,838 psi | 84% | 1690 fps | 100% |
| Maxam CSB 2² | <<locked>> | 68% | 54,534 psi | 85% | 1690 fps | 100% |
| Maxam CSB 3² | <<locked>> | 72% | 55,956 psi | 88% | 1706 fps | 100% |
| Maxam CSB 4² | <<locked>> | 72% | 56,101 psi | 88% | 1699 fps | 100% |
| Maxam CSB 5² | <<locked>> | 72% | 56,304 psi | 88% | 1670 fps | 100% |
| Ramshot Enforcer² | <<locked>> | 64% | 52,591 psi | 82% | 2064 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,518 psi | 51% | 1368 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 68% | 57,508 psi | 90% | 1785 fps | 100% |
| ReloadSwiss RS 30 | <<locked>> | 84% | 53,751 psi | 84% | 2175 fps | 100% |
| SNPE Vectan A0² | <<locked>> | 72% | 56,753 psi | 89% | 1759 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 68% | 55,999 psi | 88% | 1726 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 68% | 57,319 psi | 90% | 1745 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 76% | 57,305 psi | 90% | 1686 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 88% | 53,563 psi | 84% | 2031 fps | 100% |
| SNPE Vectan BA7 1/2² | <<locked>> | 72% | 56,811 psi | 89% | 1841 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 68% | 56,681 psi | 89% | 1742 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 57,145 psi | 90% | 2346 fps | 100% |
| Somchem MS200² | <<locked>> | 68% | 56,521 psi | 89% | 1778 fps | 100% |
| Somchem S265 | <<locked>> | 80% | 53,417 psi | 84% | 2110 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 64% | 56,072 psi | 88% | 1837 fps | 100% |
| Vihtavuori 3N38² | <<locked>> | 68% | 51,996 psi | 81% | 1913 fps | 100% |
| Vihtavuori N105² | <<locked>> | 68% | 53,403 psi | 84% | 1909 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 54,520 psi | 85% | 2093 fps | 100% |
| Vihtavuori N320² | <<locked>> | 64% | 53,417 psi | 84% | 1650 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 52,982 psi | 83% | 1572 fps | 100% |
| Vihtavuori N330² | <<locked>> | 64% | 57,711 psi | 90% | 1736 fps | 100% |
| Vihtavuori N340² | <<locked>> | 64% | 53,127 psi | 83% | 1729 fps | 100% |
| Vihtavuori N350² | <<locked>> | 68% | 55,158 psi | 86% | 1818 fps | 100% |
| Winchester 296² | <<locked>> | 68% | 52,011 psi | 82% | 2211 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 68% | 53,084 psi | 83% | 1709 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% | 41,524 psi | 65% | 1949 fps | 100% |
| Accurate No. 11 FS² | <<locked>> | 60% | 32,851 psi | 51% | 1886 fps | 100% |
| Accurate No. 2² | <<locked>> | 60% | 51,866 psi | 81% | 1722 fps | 100% |
| Accurate Solo 1000² | <<locked>> | 60% | 42,206 psi | 66% | 1532 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 43,685 psi | 68% | 1578 fps | 100% |
| ADI AP 100² | <<locked>> | 60% | 37,710 psi | 59% | 1680 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 37,478 psi | 59% | 1401 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 37,739 psi | 59% | 1437 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 40,553 psi | 64% | 1483 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 46,267 psi | 73% | 1588 fps | 100% |
| Alliant 2400² | <<locked>> | 60% | 44,817 psi | 70% | 1982 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 44,367 psi | 70% | 1585 fps | 100% |
| Alliant BLUE DOT² | <<locked>> | 60% | 39,813 psi | 62% | 1834 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 43,163 psi | 68% | 1555 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 36,158 psi | 57% | 1558 fps | 100% |
| Alliant Power Pro 300-MP² | <<locked>> | 60% | 40,872 psi | 64% | 2001 fps | 100% |
| Alliant RED DOT² | <<locked>> | 60% | 40,277 psi | 63% | 1496 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 47,500 psi | 74% | 1706 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 44,280 psi | 69% | 1535 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | 10 gr | 60% | 32,010 psi | 50% | 1391 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 49,342 psi | 77% | 1627 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 32,401 psi | 51% | 1348 fps | 100% |
| Hodgdon H110² | <<locked>> | 60% | 41,829 psi | 66% | 2028 fps | 100% |
| Hodgdon LilGun² | <<locked>> | 60% | 39,146 psi | 61% | 1962 fps | 100% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 16,578 psi | 26% | 1027 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 49,516 psi | 78% | 1670 fps | 100% |
| IMR 4227² | <<locked>> | 60% | 25,628 psi | 40% | 1752 fps | 99.5% |
| Maxam CSB 1² | <<locked>> | 60% | 41,089 psi | 64% | 1539 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 45,905 psi | 72% | 1588 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 42,815 psi | 67% | 1552 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 43,439 psi | 68% | 1545 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 44,237 psi | 69% | 1526 fps | 100% |
| Ramshot Enforcer² | <<locked>> | 60% | 45,759 psi | 72% | 1982 fps | 100% |
| ReloadSwiss RS 14² | <<locked>> | 60% | 16,476 psi | 26% | 1053 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 47,253 psi | 74% | 1673 fps | 100% |
| ReloadSwiss RS 30² | <<locked>> | 60% | 25,512 psi | 40% | 1762 fps | 100% |
| SNPE Vectan A0² | <<locked>> | 60% | 42,656 psi | 67% | 1598 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 46,209 psi | 72% | 1614 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 47,036 psi | 74% | 1634 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 41,133 psi | 64% | 1486 fps | 100% |
| SNPE Vectan BA6 1/2² | 14 gr | 60% | 24,671 psi | 39% | 1617 fps | 100% |
| SNPE Vectan BA7 1/2² | <<locked>> | 60% | 41,713 psi | 65% | 1670 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 46,731 psi | 73% | 1631 fps | 100% |
| SNPE Vectan SP 3*² | 16.1 gr | 60% | 18,376 psi | 29% | 1617 fps | 90.9% |
| Somchem MS200² | <<locked>> | 60% | 46,470 psi | 73% | 1663 fps | 100% |
| Somchem S265² | <<locked>> | 60% | 29,356 psi | 46% | 1759 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 60% | 50,111 psi | 79% | 1775 fps | 100% |
| Vihtavuori 3N38² | <<locked>> | 60% | 41,263 psi | 65% | 1785 fps | 100% |
| Vihtavuori N105² | <<locked>> | 60% | 41,916 psi | 66% | 1778 fps | 100% |
| Vihtavuori N110² | <<locked>> | 60% | 29,979 psi | 47% | 1762 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 48,428 psi | 76% | 1594 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 26,005 psi | 41% | 1207 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 52,605 psi | 82% | 1683 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 48,283 psi | 76% | 1677 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 44,614 psi | 70% | 1699 fps | 100% |
| Winchester 296² | <<locked>> | 60% | 39,610 psi | 62% | 2044 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 43,758 psi | 69% | 1601 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 | 158gr | Prvi Partizan Grom. SNPE Vectan SP 3 delivers the highest muzzle velocity at 2,346 fps; across all powders the maximum-charge window runs from 1,342 fps to 2,346 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 158.0 gr projectile in 0.284" calls for a 1:11.0 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 | 158gr | Prvi Partizan Grom 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.