Load Specifications
Load data in caliber 7 x 49 GJW with .284 | 175gr | Speer Grand Slam 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 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% | 57,624 psi | 90% | 2018 fps | 100% |
| Accurate No. 11 FS² | <<locked>> | 72% | 52,968 psi | 83% | 2047 fps | 100% |
| Accurate Solo 1000² | <<locked>> | 72% | 55,883 psi | 88% | 1611 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 68% | 54,027 psi | 85% | 1608 fps | 100% |
| ADI AP 100² | <<locked>> | 72% | 53,490 psi | 84% | 1772 fps | 100% |
| ADI APS 350 | <<locked>> | 80% | 55,463 psi | 87% | 1552 fps | 100% |
| ADI APS 450 | <<locked>> | 80% | 56,115 psi | 88% | 1591 fps | 100% |
| ADI AS 30² | <<locked>> | 76% | 56,710 psi | 89% | 1601 fps | 100% |
| ADI AS 50N² | <<locked>> | 68% | 56,333 psi | 88% | 1621 fps | 100% |
| Alliant 2400² | <<locked>> | 64% | 53,679 psi | 84% | 1969 fps | 100% |
| Alliant BE-86² | <<locked>> | 68% | 54,824 psi | 86% | 1614 fps | 100% |
| Alliant BLUE DOT² | <<locked>> | 68% | 52,475 psi | 82% | 1883 fps | 100% |
| Alliant Green Dot² | <<locked>> | 72% | 56,289 psi | 88% | 1627 fps | 100% |
| Alliant Herco² | <<locked>> | 76% | 53,476 psi | 84% | 1686 fps | 100% |
| Alliant Power Pro 300-MP² | <<locked>> | 68% | 57,363 psi | 90% | 2080 fps | 100% |
| Alliant RED DOT² | <<locked>> | 76% | 56,028 psi | 88% | 1611 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 64% | 53,954 psi | 85% | 1686 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 68% | 54,346 psi | 85% | 1565 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 84% | 55,100 psi | 86% | 1591 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 64% | 56,028 psi | 88% | 1611 fps | 100% |
| Hodgdon Clays | <<locked>> | 88% | 55,216 psi | 87% | 1572 fps | 100% |
| Hodgdon H110² | <<locked>> | 64% | 51,488 psi | 81% | 2031 fps | 100% |
| Hodgdon LilGun² | <<locked>> | 68% | 55,463 psi | 87% | 2034 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,359 psi | 52% | 1276 fps | 100% |
| Hodgdon Universal² | <<locked>> | 64% | 55,724 psi | 87% | 1650 fps | 100% |
| IMR 4227 | <<locked>> | 80% | 51,822 psi | 81% | 2057 fps | 100% |
| Maxam CSB 1² | <<locked>> | 72% | 55,332 psi | 87% | 1617 fps | 100% |
| Maxam CSB 2² | <<locked>> | 68% | 55,970 psi | 88% | 1614 fps | 100% |
| Maxam CSB 3² | <<locked>> | 72% | 56,594 psi | 89% | 1624 fps | 100% |
| Maxam CSB 4² | <<locked>> | 72% | 57,305 psi | 90% | 1624 fps | 100% |
| Maxam CSB 5² | <<locked>> | 72% | 57,319 psi | 90% | 1598 fps | 100% |
| Ramshot Enforcer² | <<locked>> | 64% | 55,405 psi | 87% | 1975 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,504 psi | 53% | 1309 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 64% | 53,708 psi | 84% | 1650 fps | 100% |
| ReloadSwiss RS 30 | <<locked>> | 80% | 51,866 psi | 81% | 2031 fps | 100% |
| SNPE Vectan A0² | <<locked>> | 68% | 53,084 psi | 83% | 1627 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 68% | 56,695 psi | 89% | 1644 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 64% | 53,534 psi | 84% | 1617 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 76% | 57,435 psi | 90% | 1604 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 88% | 57,101 psi | 89% | 1949 fps | 100% |
| SNPE Vectan BA7 1/2² | <<locked>> | 68% | 53,069 psi | 83% | 1703 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 68% | 57,493 psi | 90% | 1660 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 92% | 55,172 psi | 86% | 2201 fps | 100% |
| Somchem MS200² | <<locked>> | 64% | 52,721 psi | 83% | 1644 fps | 100% |
| Somchem S265 | <<locked>> | 80% | 56,840 psi | 89% | 2031 fps | 100% |
| Vihtavuori 3N38² | <<locked>> | 68% | 54,708 psi | 86% | 1834 fps | 100% |
| Vihtavuori N105² | <<locked>> | 68% | 56,463 psi | 88% | 1831 fps | 100% |
| Vihtavuori N110² | <<locked>> | 76% | 52,576 psi | 82% | 1955 fps | 100% |
| Vihtavuori N320² | <<locked>> | 64% | 53,998 psi | 85% | 1572 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 53,330 psi | 84% | 1496 fps | 100% |
| Vihtavuori N340² | <<locked>> | 64% | 54,926 psi | 86% | 1657 fps | 100% |
| Vihtavuori N350² | <<locked>> | 68% | 57,406 psi | 90% | 1739 fps | 100% |
| Winchester 296² | <<locked>> | 68% | 56,086 psi | 88% | 2133 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 68% | 54,578 psi | 86% | 1637 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% | 44,425 psi | 70% | 1877 fps | 100% |
| Accurate No. 11 FS² | <<locked>> | 60% | 35,491 psi | 56% | 1824 fps | 100% |
| Accurate Solo 1000² | <<locked>> | 60% | 43,308 psi | 68% | 1467 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 44,454 psi | 70% | 1503 fps | 100% |
| ADI AP 100² | <<locked>> | 60% | 39,044 psi | 61% | 1604 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 38,218 psi | 60% | 1342 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 37,927 psi | 59% | 1368 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 40,901 psi | 64% | 1411 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 47,442 psi | 74% | 1519 fps | 100% |
| Alliant 2400² | <<locked>> | 60% | 47,152 psi | 74% | 1896 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 45,063 psi | 71% | 1509 fps | 100% |
| Alliant BLUE DOT² | <<locked>> | 60% | 41,597 psi | 65% | 1752 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 43,685 psi | 68% | 1480 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 37,057 psi | 58% | 1486 fps | 100% |
| Alliant Power Pro 300-MP² | <<locked>> | 60% | 43,990 psi | 69% | 1929 fps | 100% |
| Alliant RED DOT² | <<locked>> | 60% | 40,654 psi | 64% | 1424 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 48,544 psi | 76% | 1627 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 44,904 psi | 70% | 1463 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | 10 gr | 60% | 32,547 psi | 51% | 1322 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 50,502 psi | 79% | 1555 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 33,141 psi | 52% | 1289 fps | 100% |
| Hodgdon H110² | <<locked>> | 60% | 44,991 psi | 71% | 1955 fps | 100% |
| Hodgdon LilGun² | <<locked>> | 60% | 42,467 psi | 67% | 1890 fps | 100% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 17,231 psi | 27% | 988 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 50,923 psi | 80% | 1598 fps | 100% |
| IMR 4227² | <<locked>> | 60% | 27,717 psi | 43% | 1703 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 41,829 psi | 66% | 1463 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 46,615 psi | 73% | 1512 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 44,034 psi | 69% | 1483 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 44,585 psi | 70% | 1480 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 44,556 psi | 70% | 1450 fps | 100% |
| Ramshot Enforcer² | <<locked>> | 60% | 48,878 psi | 77% | 1906 fps | 100% |
| ReloadSwiss RS 14² | <<locked>> | 60% | 17,172 psi | 27% | 1010 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 48,965 psi | 77% | 1601 fps | 100% |
| ReloadSwiss RS 30² | <<locked>> | 60% | 27,920 psi | 44% | 1703 fps | 100% |
| SNPE Vectan A0² | <<locked>> | 60% | 44,193 psi | 69% | 1529 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 47,456 psi | 74% | 1542 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 48,486 psi | 76% | 1562 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 41,916 psi | 66% | 1421 fps | 100% |
| SNPE Vectan BA6 1/2² | 14 gr | 60% | 26,237 psi | 41% | 1555 fps | 100% |
| SNPE Vectan BA7 1/2² | <<locked>> | 60% | 43,511 psi | 68% | 1598 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 48,153 psi | 75% | 1562 fps | 100% |
| SNPE Vectan SP 3*² | 16.2 gr | 60% | 20,059 psi | 31% | 1591 fps | 94.3% |
| Somchem MS200² | <<locked>> | 60% | 48,066 psi | 75% | 1594 fps | 100% |
| Somchem S265² | <<locked>> | 60% | 31,357 psi | 49% | 1699 fps | 100% |
| Vihtavuori 3N38² | <<locked>> | 60% | 43,598 psi | 68% | 1709 fps | 100% |
| Vihtavuori N105² | <<locked>> | 60% | 44,556 psi | 70% | 1706 fps | 100% |
| Vihtavuori N110² | <<locked>> | 60% | 32,372 psi | 51% | 1699 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 48,994 psi | 77% | 1519 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 26,324 psi | 41% | 1148 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 49,298 psi | 77% | 1598 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 46,586 psi | 73% | 1627 fps | 100% |
| Winchester 296² | <<locked>> | 60% | 42,888 psi | 67% | 1975 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 45,121 psi | 71% | 1532 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 | 175gr | Speer Grand Slam. SNPE Vectan SP 3 delivers the highest muzzle velocity at 2,201 fps; across all powders the maximum-charge window runs from 1,276 fps to 2,201 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 175.0 gr projectile in 0.284" calls for a 1:12.0 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 | 175gr | Speer Grand Slam 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.