Load Specifications
Load data in caliber 7 x 49 GJW with .284 | 145gr | Speer Grand Slam bullet and 55 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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 4100² | <<locked>> | 68% | 54,563 psi | 86% | 2247 fps | 100% |
| Accurate No. 11 FS² | <<locked>> | 76% | 56,347 psi | 88% | 2346 fps | 100% |
| Accurate Solo 1000² | <<locked>> | 72% | 54,781 psi | 86% | 1804 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 68% | 53,127 psi | 83% | 1808 fps | 100% |
| ADI AP 100² | <<locked>> | 76% | 56,478 psi | 89% | 2041 fps | 100% |
| ADI APS 350 | <<locked>> | 80% | 55,042 psi | 86% | 1745 fps | 100% |
| ADI APS 450 | <<locked>> | 80% | 55,738 psi | 87% | 1788 fps | 100% |
| ADI AS 30² | <<locked>> | 76% | 55,883 psi | 88% | 1795 fps | 100% |
| ADI AS 50N² | <<locked>> | 68% | 55,230 psi | 87% | 1818 fps | 100% |
| Alliant 2400² | <<locked>> | 68% | 57,450 psi | 90% | 2274 fps | 100% |
| Alliant BE-86² | <<locked>> | 68% | 53,693 psi | 84% | 1808 fps | 100% |
| Alliant BLUE DOT² | <<locked>> | 72% | 55,724 psi | 87% | 2169 fps | 100% |
| Alliant Green Dot² | <<locked>> | 72% | 55,782 psi | 87% | 1831 fps | 100% |
| Alliant Herco | <<locked>> | 80% | 56,579 psi | 89% | 1942 fps | 100% |
| Alliant Power Pro 300-MP² | <<locked>> | 68% | 53,650 psi | 84% | 2306 fps | 100% |
| Alliant RED DOT² | <<locked>> | 76% | 55,347 psi | 87% | 1811 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 68% | 57,203 psi | 90% | 1949 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 68% | 53,664 psi | 84% | 1762 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 84% | 53,751 psi | 84% | 1778 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 64% | 54,955 psi | 86% | 1804 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 64% | 52,997 psi | 83% | 1821 fps | 100% |
| Hodgdon Clays | <<locked>> | 88% | 54,752 psi | 86% | 1765 fps | 100% |
| Hodgdon H110² | <<locked>> | 68% | 54,911 psi | 86% | 2336 fps | 100% |
| Hodgdon LilGun² | <<locked>> | 68% | 51,924 psi | 81% | 2264 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,779 psi | 51% | 1437 fps | 100% |
| Hodgdon Universal² | <<locked>> | 64% | 54,824 psi | 86% | 1854 fps | 100% |
| Maxam CSB 1² | <<locked>> | 72% | 54,143 psi | 85% | 1814 fps | 100% |
| Maxam CSB 2² | <<locked>> | 68% | 55,042 psi | 86% | 1814 fps | 100% |
| Maxam CSB 3² | <<locked>> | 72% | 55,767 psi | 87% | 1827 fps | 100% |
| Maxam CSB 4² | <<locked>> | 72% | 56,724 psi | 89% | 1827 fps | 100% |
| Maxam CSB 5² | <<locked>> | 72% | 56,492 psi | 89% | 1791 fps | 100% |
| Ramshot Enforcer² | <<locked>> | 64% | 52,605 psi | 82% | 2205 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,750 psi | 51% | 1470 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 64% | 52,837 psi | 83% | 1860 fps | 100% |
| ReloadSwiss RS 30 | <<locked>> | 84% | 53,838 psi | 84% | 2320 fps | 100% |
| SNPE Vectan A0² | <<locked>> | 72% | 57,159 psi | 90% | 1886 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 68% | 56,217 psi | 88% | 1847 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 68% | 57,522 psi | 90% | 1870 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 76% | 56,942 psi | 89% | 1801 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 88% | 53,838 psi | 84% | 2169 fps | 100% |
| SNPE Vectan BA7 1/2² | <<locked>> | 72% | 56,797 psi | 89% | 1969 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 68% | 56,739 psi | 89% | 1870 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 57,276 psi | 90% | 2497 fps | 100% |
| Somchem MS200² | <<locked>> | 68% | 56,579 psi | 89% | 1906 fps | 100% |
| Somchem S265 | <<locked>> | 80% | 53,461 psi | 84% | 2254 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 64% | 56,507 psi | 89% | 1972 fps | 100% |
| Vihtavuori 3N38² | <<locked>> | 68% | 52,431 psi | 82% | 2051 fps | 100% |
| Vihtavuori N105² | <<locked>> | 68% | 53,403 psi | 84% | 2044 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 55,317 psi | 87% | 2244 fps | 100% |
| Vihtavuori N320² | <<locked>> | 64% | 53,069 psi | 83% | 1765 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 52,779 psi | 83% | 1683 fps | 100% |
| Vihtavuori N340² | <<locked>> | 64% | 53,374 psi | 84% | 1857 fps | 100% |
| Vihtavuori N350² | <<locked>> | 68% | 55,854 psi | 88% | 1952 fps | 100% |
| Winchester 296² | <<locked>> | 68% | 52,257 psi | 82% | 2362 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 68% | 53,171 psi | 83% | 1834 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% | 41,481 psi | 65% | 2080 fps | 100% |
| Accurate No. 11 FS² | <<locked>> | 60% | 32,880 psi | 52% | 2011 fps | 100% |
| Accurate Solo 1000² | <<locked>> | 60% | 42,670 psi | 67% | 1647 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 43,743 psi | 69% | 1693 fps | 100% |
| ADI AP 100² | <<locked>> | 60% | 37,594 psi | 59% | 1798 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 37,985 psi | 60% | 1509 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 37,840 psi | 59% | 1542 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 40,727 psi | 64% | 1594 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 46,499 psi | 73% | 1706 fps | 100% |
| Alliant 2400² | <<locked>> | 60% | 44,875 psi | 70% | 2116 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 44,237 psi | 69% | 1693 fps | 100% |
| Alliant BLUE DOT² | <<locked>> | 60% | 39,798 psi | 62% | 1959 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 42,989 psi | 67% | 1663 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 36,042 psi | 56% | 1667 fps | 100% |
| Alliant Power Pro 300-MP² | <<locked>> | 60% | 41,046 psi | 64% | 2139 fps | 100% |
| Alliant RED DOT² | <<locked>> | 60% | 40,030 psi | 63% | 1601 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 47,166 psi | 74% | 1824 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 44,338 psi | 69% | 1647 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | 10.9 gr | 60% | 32,126 psi | 50% | 1490 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 49,400 psi | 77% | 1742 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 47,761 psi | 75% | 1759 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 32,837 psi | 51% | 1453 fps | 100% |
| Hodgdon H110² | <<locked>> | 60% | 41,989 psi | 66% | 2165 fps | 100% |
| Hodgdon LilGun² | <<locked>> | 60% | 39,117 psi | 61% | 2093 fps | 100% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 16,578 psi | 26% | 1102 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 49,821 psi | 78% | 1795 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 41,205 psi | 65% | 1650 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 45,876 psi | 72% | 1703 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 43,091 psi | 68% | 1667 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 43,801 psi | 69% | 1663 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 44,164 psi | 69% | 1634 fps | 100% |
| Ramshot Enforcer² | <<locked>> | 60% | 45,803 psi | 72% | 2119 fps | 100% |
| ReloadSwiss RS 14² | <<locked>> | 60% | 16,781 psi | 26% | 1138 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 47,311 psi | 74% | 1791 fps | 100% |
| ReloadSwiss RS 30² | <<locked>> | 60% | 25,585 psi | 40% | 1877 fps | 100% |
| SNPE Vectan A0² | <<locked>> | 60% | 42,946 psi | 67% | 1716 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 46,064 psi | 72% | 1726 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 46,891 psi | 73% | 1745 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 41,510 psi | 65% | 1598 fps | 100% |
| SNPE Vectan BA6 1/2² | 15.2 gr | 60% | 24,671 psi | 39% | 1729 fps | 100% |
| SNPE Vectan BA7 1/2² | <<locked>> | 60% | 41,800 psi | 66% | 1788 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 46,978 psi | 74% | 1752 fps | 100% |
| SNPE Vectan SP 3*² | 17.5 gr | 60% | 18,420 psi | 29% | 1719 fps | 90.1% |
| Somchem MS200² | <<locked>> | 60% | 46,688 psi | 73% | 1788 fps | 100% |
| Somchem S265² | <<locked>> | 60% | 29,544 psi | 46% | 1880 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 60% | 50,386 psi | 79% | 1903 fps | 100% |
| Vihtavuori 3N38² | <<locked>> | 60% | 41,408 psi | 65% | 1909 fps | 100% |
| Vihtavuori N105² | <<locked>> | 60% | 42,206 psi | 66% | 1906 fps | 100% |
| Vihtavuori N110² | <<locked>> | 60% | 30,153 psi | 47% | 1886 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 48,501 psi | 76% | 1709 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 26,092 psi | 41% | 1296 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 48,269 psi | 76% | 1798 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 44,846 psi | 70% | 1824 fps | 100% |
| Winchester 296² | <<locked>> | 60% | 39,813 psi | 62% | 2182 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 43,540 psi | 68% | 1713 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 8 powders for 7 x 49 GJW loaded with the .284 | 145gr | Speer Grand Slam. SNPE Vectan SP 3 delivers the highest muzzle velocity at 2,497 fps; across all powders the maximum-charge window runs from 1,437 fps to 2,497 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 8 of the 8 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 145.0 gr projectile in 0.284" calls for a 1:13.0 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 | 145gr | Speer Grand Slam 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.