Load Specifications
Load data in caliber .22 Rem. Jet Mag. with .224 | 50gr | Speer TNT bullet and 15 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 14 and Hodgdon TrailBoss.
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: 6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| ADI AP 100² | <<locked>> | 68% | 30,342 psi | 82% | 1640 fps | 99.8% |
| Alliant 2400*² | <<locked>> | 68% | 31,763 psi | 86% | 1739 fps | 87.7% |
| Alliant BLUE DOT*² | <<locked>> | 68% | 30,400 psi | 82% | 1686 fps | 94% |
| Alliant Herco² | <<locked>> | 68% | 31,589 psi | 85% | 1581 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 72% | 32,387 psi | 88% | 1476 fps | 100% |
| Hodgdon Clays² | <<locked>> | 64% | 30,618 psi | 83% | 1375 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 25,730 psi | 70% | 1312 fps | 100% |
| Ramshot Enforcer*² | <<locked>> | 68% | 31,473 psi | 85% | 1736 fps | 88.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 24,990 psi | 68% | 1332 fps | 100% |
| SNPE Vectan BA6 1/2* | <<locked>> | 92% | 30,908 psi | 84% | 1719 fps | 91% |
| SNPE Vectan BA7 1/2² | <<locked>> | 64% | 31,763 psi | 86% | 1624 fps | 100% |
| Vihtavuori 3N38² | <<locked>> | 68% | 31,879 psi | 86% | 1703 fps | 98% |
| Vihtavuori N105² | <<locked>> | 68% | 30,168 psi | 82% | 1693 fps | 99.4% |
| Vihtavuori N32C Tin Star | <<locked>> | 80% | 31,067 psi | 84% | 1378 fps | 100% |
| Vihtavuori N350² | <<locked>> | 64% | 33,083 psi | 89% | 1650 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| ADI AP 100² | <<locked>> | 60% | 24,076 psi | 65% | 1499 fps | 98.4% |
| Alliant 2400*² | <<locked>> | 64% | 28,137 psi | 76% | 1650 fps | 85.2% |
| Alliant BLUE DOT*² | <<locked>> | 60% | 23,482 psi | 63% | 1516 fps | 89.5% |
| Alliant Herco² | <<locked>> | 60% | 25,802 psi | 70% | 1470 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 23,960 psi | 65% | 1329 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 27,673 psi | 75% | 1325 fps | 100% |
| Hodgdon TrailBoss² | 2.8 gr | 60% | 12,633 psi | 34% | 994 fps | 100% |
| Ramshot Enforcer*² | <<locked>> | 64% | 27,920 psi | 75% | 1654 fps | 86.3% |
| ReloadSwiss RS 14² | 2.9 gr | 60% | 12,531 psi | 34% | 1017 fps | 100% |
| SNPE Vectan BA6 1/2* | <<locked>> | 84% | 25,034 psi | 68% | 1578 fps | 86.7% |
| SNPE Vectan BA7 1/2² | <<locked>> | 60% | 28,427 psi | 77% | 1558 fps | 100% |
| Vihtavuori 3N38*² | <<locked>> | 60% | 24,947 psi | 67% | 1542 fps | 94.8% |
| Vihtavuori N105² | <<locked>> | 60% | 23,076 psi | 62% | 1526 fps | 96.7% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 20,363 psi | 55% | 1178 fps | 100% |
| Vihtavuori N350² | <<locked>> | 60% | 29,399 psi | 79% | 1585 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 2 powders for .22 Rem. Jet Mag. loaded with the .224 | 50gr | Speer TNT. ReloadSwiss RS 14 delivers the highest muzzle velocity at 1,332 fps; across all powders the maximum-charge window runs from 1,312 fps to 1,332 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 2 of the 2 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (255 MPa), the top charges use 68–70 %, leaving at least 30 % headroom. The 50.0 gr projectile in 0.224" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, ReloadSwiss RS 14 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. ReloadSwiss RS 14, Hodgdon TrailBoss rank at the top here: for .22 Rem. Jet Mag. with the .224 | 50gr | Speer TNT 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.