Load Specifications
Load data in caliber 7 x 49 GJW with .284 | 155gr | Frontier PH HPFB bullet and 58 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, IMR 4227 and ReloadSwiss RS 30.
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>> | 72% | 57,740 psi | 90% | 2129 fps | 100% |
| Accurate No. 11 FS² | <<locked>> | 76% | 52,214 psi | 82% | 2149 fps | 100% |
| Accurate No. 2² | <<locked>> | 64% | 56,333 psi | 88% | 1755 fps | 100% |
| Accurate Solo 1000² | <<locked>> | 72% | 53,766 psi | 84% | 1657 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 72% | 56,724 psi | 89% | 1709 fps | 100% |
| ADI AP 100² | <<locked>> | 76% | 54,578 psi | 86% | 1877 fps | 100% |
| ADI APS 350 | <<locked>> | 80% | 54,621 psi | 86% | 1601 fps | 100% |
| ADI APS 450 | <<locked>> | 80% | 54,940 psi | 86% | 1640 fps | 100% |
| ADI AS 30² | <<locked>> | 76% | 55,521 psi | 87% | 1650 fps | 100% |
| ADI AS 50N² | <<locked>> | 68% | 54,795 psi | 86% | 1673 fps | 100% |
| Alliant 2400² | <<locked>> | 68% | 53,940 psi | 85% | 2083 fps | 100% |
| Alliant BE-86² | <<locked>> | 68% | 52,475 psi | 82% | 1660 fps | 100% |
| Alliant BLUE DOT² | <<locked>> | 72% | 53,055 psi | 83% | 1991 fps | 100% |
| Alliant Green Dot² | <<locked>> | 72% | 54,795 psi | 86% | 1680 fps | 100% |
| Alliant Herco | <<locked>> | 80% | 55,303 psi | 87% | 1788 fps | 100% |
| Alliant Power Pro 300-MP² | <<locked>> | 72% | 57,029 psi | 89% | 2192 fps | 100% |
| Alliant RED DOT² | <<locked>> | 76% | 54,534 psi | 85% | 1663 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 68% | 56,072 psi | 88% | 1791 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 72% | 57,435 psi | 90% | 1663 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 88% | 56,768 psi | 89% | 1677 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 64% | 53,766 psi | 84% | 1657 fps | 100% |
| Hodgdon Clays | <<locked>> | 92% | 57,551 psi | 90% | 1660 fps | 100% |
| Hodgdon H110² | <<locked>> | 68% | 51,372 psi | 81% | 2142 fps | 100% |
| Hodgdon LilGun² | <<locked>> | 72% | 55,245 psi | 87% | 2152 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,169 psi | 50% | 1319 fps | 100% |
| Hodgdon Universal² | <<locked>> | 64% | 53,911 psi | 84% | 1706 fps | 100% |
| IMR 4227 | <<locked>> | 88% | 57,014 psi | 89% | 2221 fps | 100% |
| Maxam CSB 1² | <<locked>> | 76% | 57,435 psi | 90% | 1709 fps | 100% |
| Maxam CSB 2² | <<locked>> | 68% | 53,563 psi | 84% | 1660 fps | 100% |
| Maxam CSB 3² | <<locked>> | 72% | 55,100 psi | 86% | 1680 fps | 100% |
| Maxam CSB 4² | <<locked>> | 72% | 55,956 psi | 88% | 1680 fps | 100% |
| Maxam CSB 5² | <<locked>> | 72% | 55,434 psi | 87% | 1640 fps | 100% |
| Ramshot Enforcer² | <<locked>> | 68% | 56,521 psi | 89% | 2096 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,198 psi | 50% | 1352 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 68% | 55,956 psi | 88% | 1755 fps | 100% |
| ReloadSwiss RS 30 | <<locked>> | 88% | 55,985 psi | 88% | 2192 fps | 100% |
| SNPE Vectan A0² | <<locked>> | 72% | 55,405 psi | 87% | 1729 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 68% | 55,143 psi | 86% | 1699 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 68% | 56,289 psi | 88% | 1719 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 76% | 56,347 psi | 88% | 1654 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 92% | 55,419 psi | 87% | 2041 fps | 100% |
| SNPE Vectan BA7 1/2² | <<locked>> | 72% | 55,288 psi | 87% | 1811 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 68% | 55,259 psi | 87% | 1713 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 52,185 psi | 82% | 2277 fps | 100% |
| Somchem MP200² | <<locked>> | 64% | 57,188 psi | 90% | 1795 fps | 100% |
| Somchem MS200² | <<locked>> | 68% | 54,998 psi | 86% | 1749 fps | 100% |
| Somchem S265 | <<locked>> | 84% | 56,072 psi | 88% | 2129 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 64% | 54,099 psi | 85% | 1808 fps | 100% |
| Vihtavuori 3N38² | <<locked>> | 72% | 55,564 psi | 87% | 1939 fps | 100% |
| Vihtavuori N105² | <<locked>> | 72% | 57,058 psi | 89% | 1939 fps | 100% |
| Vihtavuori N110 | <<locked>> | 84% | 57,479 psi | 90% | 2116 fps | 100% |
| Vihtavuori N320² | <<locked>> | 68% | 56,913 psi | 89% | 1670 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 52,272 psi | 82% | 1549 fps | 100% |
| Vihtavuori N330² | <<locked>> | 64% | 56,826 psi | 89% | 1709 fps | 100% |
| Vihtavuori N340² | <<locked>> | 68% | 57,479 psi | 90% | 1762 fps | 100% |
| Vihtavuori N350² | <<locked>> | 68% | 53,751 psi | 84% | 1791 fps | 100% |
| Winchester 296² | <<locked>> | 72% | 55,405 psi | 87% | 2244 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 72% | 56,840 psi | 89% | 1736 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% | 39,088 psi | 61% | 1909 fps | 100% |
| Accurate No. 11 FS² | <<locked>> | 60% | 30,734 psi | 48% | 1841 fps | 100% |
| Accurate No. 2² | <<locked>> | 60% | 50,256 psi | 79% | 1693 fps | 100% |
| Accurate Solo 1000² | <<locked>> | 60% | 41,843 psi | 66% | 1512 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 42,714 psi | 67% | 1552 fps | 100% |
| ADI AP 100² | <<locked>> | 60% | 35,737 psi | 56% | 1644 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 37,521 psi | 59% | 1385 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 37,420 psi | 59% | 1417 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 40,045 psi | 63% | 1460 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 45,382 psi | 71% | 1562 fps | 100% |
| Alliant 2400² | <<locked>> | 60% | 41,945 psi | 66% | 1936 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 43,497 psi | 68% | 1558 fps | 100% |
| Alliant BLUE DOT² | <<locked>> | 60% | 37,695 psi | 59% | 1795 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 42,134 psi | 66% | 1526 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 34,809 psi | 55% | 1529 fps | 100% |
| Alliant Power Pro 300-MP² | <<locked>> | 60% | 38,000 psi | 60% | 1955 fps | 100% |
| Alliant RED DOT² | <<locked>> | 60% | 39,595 psi | 62% | 1473 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 45,963 psi | 72% | 1677 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 43,482 psi | 68% | 1512 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 31,270 psi | 49% | 1368 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 48,544 psi | 76% | 1604 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 32,358 psi | 51% | 1332 fps | 100% |
| Hodgdon H110² | <<locked>> | 60% | 38,899 psi | 61% | 1978 fps | 100% |
| Hodgdon LilGun² | <<locked>> | 60% | 36,390 psi | 57% | 1923 fps | 100% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 16,201 psi | 25% | 1010 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 48,863 psi | 77% | 1647 fps | 100% |
| IMR 4227² | 14.5 gr | 60% | 23,844 psi | 37% | 1699 fps | 98.6% |
| Maxam CSB 1² | <<locked>> | 60% | 40,132 psi | 63% | 1512 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 44,425 psi | 70% | 1555 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 41,843 psi | 66% | 1522 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 43,134 psi | 68% | 1529 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 43,294 psi | 68% | 1496 fps | 100% |
| Ramshot Enforcer² | <<locked>> | 60% | 43,076 psi | 68% | 1942 fps | 100% |
| ReloadSwiss RS 14² | <<locked>> | 60% | 16,085 psi | 25% | 1037 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 45,847 psi | 72% | 1644 fps | 100% |
| ReloadSwiss RS 30² | 14 gr | 60% | 23,714 psi | 37% | 1719 fps | 100% |
| SNPE Vectan A0² | <<locked>> | 60% | 41,858 psi | 66% | 1575 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 45,382 psi | 71% | 1588 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 46,079 psi | 72% | 1608 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 41,075 psi | 64% | 1470 fps | 100% |
| SNPE Vectan BA6 1/2² | <<locked>> | 60% | 23,018 psi | 36% | 1581 fps | 100% |
| SNPE Vectan BA7 1/2² | <<locked>> | 60% | 40,089 psi | 63% | 1637 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 46,137 psi | 72% | 1608 fps | 100% |
| SNPE Vectan SP 3*² | 15 gr | 60% | 17,100 psi | 27% | 1558 fps | 88.1% |
| Somchem MP200² | <<locked>> | 60% | 52,054 psi | 82% | 1742 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 45,774 psi | 72% | 1644 fps | 100% |
| Somchem S265² | <<locked>> | 60% | 27,992 psi | 44% | 1722 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 60% | 48,544 psi | 76% | 1745 fps | 100% |
| Vihtavuori 3N38² | <<locked>> | 60% | 39,552 psi | 62% | 1755 fps | 100% |
| Vihtavuori N105² | <<locked>> | 60% | 39,900 psi | 63% | 1749 fps | 100% |
| Vihtavuori N110² | <<locked>> | 60% | 28,065 psi | 44% | 1726 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 47,616 psi | 75% | 1568 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 25,280 psi | 40% | 1184 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 51,401 psi | 81% | 1654 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 46,934 psi | 74% | 1647 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 43,352 psi | 68% | 1677 fps | 100% |
| Winchester 296² | <<locked>> | 60% | 36,680 psi | 57% | 1995 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 60% | 42,888 psi | 67% | 1578 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 58 powders for 7 x 49 GJW loaded with the .284 | 155gr | Frontier PH HPFB. SNPE Vectan SP 3 delivers the highest muzzle velocity at 2,277 fps; across all powders the maximum-charge window runs from 1,319 fps to 2,277 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 14 of the 58 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 50–90 %, leaving at least 10 % headroom. The 155.0 gr projectile in 0.284" calls for a 1:9.5 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, IMR 4227, ReloadSwiss RS 30 rank at the top here: for 7 x 49 GJW with the .284 | 155gr | Frontier PH HPFB 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.