Load Specifications
Load data in caliber 7 x 49 GJW with .284 | 127gr | Geco ZERO LG bullet and 69 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are IMR 4227, ReloadSwiss RS 30 and SNPE Vectan SP 3.
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>> | 76% | 57,406 psi | 90% | 2388 fps | 100% |
| Accurate No. 11 FS | <<locked>> | 80% | 51,068 psi | 80% | 2395 fps | 100% |
| Accurate No. 2² | <<locked>> | 64% | 53,098 psi | 83% | 1936 fps | 100% |
| Accurate No. 9² | <<locked>> | 64% | 52,808 psi | 83% | 2274 fps | 100% |
| Accurate Solo 1000² | <<locked>> | 76% | 56,579 psi | 89% | 1883 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 72% | 53,388 psi | 84% | 1880 fps | 100% |
| Accurate TCM² | <<locked>> | 64% | 52,040 psi | 82% | 2247 fps | 100% |
| ADI AP 100 | <<locked>> | 80% | 54,781 psi | 86% | 2116 fps | 100% |
| ADI APS 350 | <<locked>> | 84% | 57,653 psi | 90% | 1818 fps | 100% |
| ADI APS 450 | <<locked>> | 84% | 57,508 psi | 90% | 1854 fps | 100% |
| ADI AS 30² | <<locked>> | 76% | 53,417 psi | 84% | 1818 fps | 100% |
| ADI AS 50N² | <<locked>> | 72% | 56,695 psi | 89% | 1893 fps | 100% |
| Alliant 2400² | <<locked>> | 72% | 53,911 psi | 84% | 2346 fps | 100% |
| Alliant BE-86² | <<locked>> | 72% | 54,679 psi | 86% | 1886 fps | 100% |
| Alliant BLUE DOT² | <<locked>> | 76% | 53,084 psi | 83% | 2244 fps | 100% |
| Alliant BULLSEYE² | <<locked>> | 64% | 55,970 psi | 88% | 2028 fps | 100% |
| Alliant Green Dot² | <<locked>> | 76% | 57,421 psi | 90% | 1909 fps | 100% |
| Alliant Herco | <<locked>> | 84% | 55,869 psi | 88% | 2014 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 64% | 53,258 psi | 83% | 2175 fps | 100% |
| Alliant Power Pro 300-MP² | <<locked>> | 76% | 56,101 psi | 88% | 2454 fps | 100% |
| Alliant RED DOT | <<locked>> | 80% | 56,884 psi | 89% | 1886 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 72% | 57,290 psi | 90% | 2031 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 72% | 54,520 psi | 85% | 1827 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 88% | 54,259 psi | 85% | 1847 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 68% | 56,565 psi | 89% | 1883 fps | 100% |
| Hodgdon Clays | <<locked>> | 92% | 56,521 psi | 89% | 1834 fps | 100% |
| Hodgdon H110² | <<locked>> | 76% | 57,595 psi | 90% | 2487 fps | 100% |
| Hodgdon LilGun² | <<locked>> | 76% | 53,417 psi | 84% | 2408 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 30,356 psi | 48% | 1450 fps | 100% |
| Hodgdon Universal² | <<locked>> | 68% | 55,825 psi | 87% | 1936 fps | 100% |
| IMR 4227 | <<locked>> | 92% | 55,434 psi | 87% | 2464 fps | 100% |
| Lovex D037.2² | <<locked>> | 64% | 54,056 psi | 85% | 2290 fps | 100% |
| Lovex S011² | <<locked>> | 64% | 57,537 psi | 90% | 1909 fps | 100% |
| Lovex S020² | <<locked>> | 64% | 55,071 psi | 86% | 1926 fps | 100% |
| Maxam CSB 1² | <<locked>> | 76% | 54,795 psi | 86% | 1886 fps | 100% |
| Maxam CSB 2² | <<locked>> | 72% | 55,448 psi | 87% | 1886 fps | 100% |
| Maxam CSB 3² | <<locked>> | 76% | 56,724 psi | 89% | 1900 fps | 100% |
| Maxam CSB 4² | <<locked>> | 72% | 53,432 psi | 84% | 1847 fps | 100% |
| Maxam CSB 5² | <<locked>> | 72% | 54,186 psi | 85% | 1814 fps | 100% |
| Ramshot Enforcer² | <<locked>> | 72% | 55,738 psi | 87% | 2352 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 64% | 56,391 psi | 88% | 1886 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 30,066 psi | 47% | 1486 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 68% | 52,591 psi | 82% | 1936 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 64% | 52,736 psi | 83% | 2195 fps | 100% |
| ReloadSwiss RS 30 | <<locked>> | 92% | 52,968 psi | 83% | 2438 fps | 100% |
| Rottweil P 806² | <<locked>> | 64% | 52,402 psi | 82% | 2096 fps | 100% |
| Shooters World Heavy Pistol² | <<locked>> | 64% | 54,056 psi | 85% | 2290 fps | 100% |
| SNPE Vectan A0² | <<locked>> | 76% | 57,363 psi | 90% | 1962 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 72% | 57,551 psi | 90% | 1926 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 68% | 52,910 psi | 83% | 1886 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 76% | 55,405 psi | 87% | 1831 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 96% | 53,635 psi | 84% | 2277 fps | 100% |
| SNPE Vectan BA7 1/2² | <<locked>> | 76% | 55,869 psi | 88% | 2044 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 68% | 52,692 psi | 83% | 1890 fps | 100% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 48,530 psi | 76% | 2484 fps | 99% |
| Somchem MP200² | <<locked>> | 64% | 53,809 psi | 84% | 1978 fps | 100% |
| Somchem MS200² | <<locked>> | 72% | 57,174 psi | 90% | 1988 fps | 100% |
| Somchem S265 | <<locked>> | 88% | 54,911 psi | 86% | 2372 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 68% | 56,304 psi | 88% | 2057 fps | 100% |
| Vihtavuori 3N38² | <<locked>> | 76% | 56,014 psi | 88% | 2192 fps | 100% |
| Vihtavuori N105² | <<locked>> | 76% | 56,405 psi | 88% | 2182 fps | 100% |
| Vihtavuori N110 | <<locked>> | 88% | 55,550 psi | 87% | 2362 fps | 100% |
| Vihtavuori N320² | <<locked>> | 68% | 54,897 psi | 86% | 1847 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 49,951 psi | 78% | 1699 fps | 100% |
| Vihtavuori N330² | <<locked>> | 64% | 54,070 psi | 85% | 1890 fps | 100% |
| Vihtavuori N340² | <<locked>> | 68% | 54,172 psi | 85% | 1939 fps | 100% |
| Vihtavuori N350² | <<locked>> | 72% | 54,665 psi | 86% | 2028 fps | 100% |
| Winchester 296² | <<locked>> | 76% | 54,070 psi | 85% | 2507 fps | 100% |
| Winchester AutoComp ² | <<locked>> | 72% | 53,838 psi | 84% | 1909 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% | 33,431 psi | 52% | 2057 fps | 100% |
| Accurate No. 11 FS² | <<locked>> | 60% | 25,744 psi | 40% | 1949 fps | 98.6% |
| Accurate No. 2² | <<locked>> | 60% | 47,282 psi | 74% | 1870 fps | 100% |
| Accurate No. 9² | <<locked>> | 60% | 46,079 psi | 72% | 2192 fps | 100% |
| Accurate Solo 1000² | <<locked>> | 60% | 39,914 psi | 63% | 1667 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 39,987 psi | 63% | 1709 fps | 100% |
| Accurate TCM² | <<locked>> | 60% | 45,382 psi | 71% | 2165 fps | 100% |
| ADI AP 100² | <<locked>> | 60% | 32,561 psi | 51% | 1808 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 36,550 psi | 57% | 1529 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 36,245 psi | 57% | 1565 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 38,421 psi | 60% | 1611 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 43,859 psi | 69% | 1729 fps | 100% |
| Alliant 2400² | <<locked>> | 60% | 36,912 psi | 58% | 2106 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 40,770 psi | 64% | 1713 fps | 100% |
| Alliant BLUE DOT² | <<locked>> | 60% | 33,504 psi | 53% | 1959 fps | 100% |
| Alliant BULLSEYE² | <<locked>> | 60% | 50,662 psi | 79% | 1962 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 40,698 psi | 64% | 1690 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 32,460 psi | 51% | 1686 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 60% | 47,761 psi | 75% | 2106 fps | 100% |
| Alliant Power Pro 300-MP² | <<locked>> | 60% | 32,242 psi | 51% | 2100 fps | 100% |
| Alliant RED DOT² | <<locked>> | 60% | 37,913 psi | 59% | 1624 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 43,236 psi | 68% | 1850 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 41,104 psi | 64% | 1663 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 29,182 psi | 46% | 1506 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 46,137 psi | 72% | 1765 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 31,256 psi | 49% | 1473 fps | 100% |
| Hodgdon H110² | <<locked>> | 60% | 33,054 psi | 52% | 2126 fps | 100% |
| Hodgdon LilGun² | <<locked>> | 60% | 29,878 psi | 47% | 2060 fps | 100% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 15,084 psi | 24% | 1119 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 45,890 psi | 72% | 1811 fps | 100% |
| IMR 4227*² | 14.7 gr | 60% | 19,986 psi | 31% | 1785 fps | 94.3% |
| Lovex D037.2² | <<locked>> | 60% | 46,659 psi | 73% | 2198 fps | 100% |
| Lovex S011² | <<locked>> | 60% | 52,083 psi | 82% | 1847 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 49,647 psi | 78% | 1864 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 37,550 psi | 59% | 1663 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 42,308 psi | 66% | 1719 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 40,190 psi | 63% | 1686 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 41,060 psi | 64% | 1683 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 41,655 psi | 65% | 1650 fps | 100% |
| Ramshot Enforcer² | <<locked>> | 60% | 36,985 psi | 58% | 2103 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 51,285 psi | 80% | 1827 fps | 100% |
| ReloadSwiss RS 14² | <<locked>> | 60% | 14,823 psi | 23% | 1145 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 42,960 psi | 67% | 1814 fps | 100% |
| ReloadSwiss RS 24² | <<locked>> | 60% | 46,267 psi | 73% | 2113 fps | 100% |
| ReloadSwiss RS 30² | 14.2 gr | 60% | 19,566 psi | 31% | 1824 fps | 99.8% |
| Rottweil P 806² | <<locked>> | 60% | 46,006 psi | 72% | 2021 fps | 100% |
| Shooters World Heavy Pistol² | <<locked>> | 60% | 46,659 psi | 73% | 2198 fps | 100% |
| SNPE Vectan A0² | <<locked>> | 60% | 38,812 psi | 61% | 1729 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 60% | 43,381 psi | 68% | 1755 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 43,772 psi | 69% | 1775 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 39,813 psi | 62% | 1621 fps | 100% |
| SNPE Vectan BA6 1/2² | <<locked>> | 60% | 19,305 psi | 30% | 1699 fps | 100% |
| SNPE Vectan BA7 1/2² | <<locked>> | 60% | 36,970 psi | 58% | 1801 fps | 100% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 43,265 psi | 68% | 1768 fps | 100% |
| SNPE Vectan SP 3*² | 18.3 gr | 72% | 20,711 psi | 32% | 1873 fps | 87.7% |
| Somchem MP200² | <<locked>> | 60% | 48,240 psi | 76% | 1909 fps | 100% |
| Somchem MS200² | <<locked>> | 60% | 42,598 psi | 67% | 1804 fps | 100% |
| Somchem S265² | <<locked>> | 60% | 23,975 psi | 38% | 1834 fps | 98.7% |
| Vihtavuori 3N37² | <<locked>> | 60% | 44,730 psi | 70% | 1919 fps | 100% |
| Vihtavuori 3N38² | <<locked>> | 60% | 35,259 psi | 55% | 1919 fps | 100% |
| Vihtavuori N105² | <<locked>> | 60% | 34,911 psi | 55% | 1909 fps | 100% |
| Vihtavuori N110² | <<locked>> | 60% | 23,453 psi | 37% | 1850 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 45,165 psi | 71% | 1729 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 23,873 psi | 37% | 1306 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 48,124 psi | 75% | 1818 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 43,453 psi | 68% | 1811 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 39,276 psi | 62% | 1834 fps | 100% |
| Winchester 296² | <<locked>> | 60% | 30,777 psi | 48% | 2126 fps | 99.8% |
| Winchester AutoComp ² | <<locked>> | 60% | 39,900 psi | 63% | 1732 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 69 powders for 7 x 49 GJW loaded with the .284 | 127gr | Geco ZERO LG. Winchester 296 delivers the highest muzzle velocity at 2,507 fps; across all powders the maximum-charge window runs from 1,450 fps to 2,507 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 17 of the 69 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 47–90 %, leaving at least 10 % headroom. The 127.0 gr projectile in 0.284" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, ReloadSwiss RS 14, SNPE Vectan SP 3 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. IMR 4227, ReloadSwiss RS 30, SNPE Vectan SP 3 rank at the top here: for 7 x 49 GJW with the .284 | 127gr | Geco ZERO LG they combine a high case fill with complete burn and sit in the upper velocity band. Hodgdon TrailBoss 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.