Load Specifications
Load data in caliber .219 Zipper with .224 | 45gr | Sierra VarmintKing bullet and 9 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant AR-Comp, Vihtavuori N130 and ReloadSwiss RS 14.
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 ≥ 80% and propellant combustion ≥ 95%. 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 2015 | <<locked>> | 92% | 37,202 psi | 90% | 3176 fps | 96% |
| Accurate 2495ᴾ | <<locked>> | 100% | 36,622 psi | 89% | 3228 fps | 96.4% |
| Alliant AR-Comp | <<locked>> | 94% | 36,535 psi | 88% | 3255 fps | 98.4% |
| Alliant Reloder-10x | <<locked>> | 86% | 35,665 psi | 86% | 3173 fps | 96.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 30,937 psi | 75% | 2218 fps | 100% |
| IMR 4198 | <<locked>> | 86% | 37,405 psi | 90% | 3179 fps | 98% |
| Norma 200 | <<locked>> | 82% | 35,433 psi | 86% | 3150 fps | 97.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 30,748 psi | 74% | 2267 fps | 100% |
| Vihtavuori N130 | <<locked>> | 88% | 36,767 psi | 89% | 3127 fps | 96.8% |
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 2015 | <<locked>> | 90% | 35,012 psi | 85% | 3120 fps | 95.2% |
| Accurate 2495 | <<locked>> | 98% | 33,837 psi | 82% | 3156 fps | 95.4% |
| Alliant AR-Comp | 24.1 gr | 88% | 30,240 psi | 73% | 3061 fps | 95.9% |
| Alliant Reloder-10x | <<locked>> | 84% | 33,170 psi | 80% | 3104 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,655 psi | 55% | 1991 fps | 100% |
| IMR 4198 | <<locked>> | 80% | 31,357 psi | 76% | 3005 fps | 95.9% |
| Norma 200 | <<locked>> | 80% | 32,967 psi | 80% | 3084 fps | 96.6% |
| ReloadSwiss RS 14 | 7.8 gr | 80% | 22,640 psi | 55% | 2044 fps | 100% |
| Vihtavuori N130 | 22.5 gr | 84% | 32,314 psi | 78% | 3005 fps | 95.1% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 9 powders for .219 Zipper loaded with the .224 | 45gr | Sierra VarmintKing. Alliant AR-Comp delivers the highest muzzle velocity at 3,255 fps; across all powders the maximum-charge window runs from 2,218 fps to 3,255 fps. Accurate 2495 gives the best case fill at 100 %, and 9 of the 9 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (285 MPa), the top charges use 74–90 %, leaving at least 10 % headroom. Accurate 2495, 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. Alliant AR-Comp, Vihtavuori N130, ReloadSwiss RS 14 rank at the top here: for .219 Zipper with the .224 | 45gr | Sierra VarmintKing 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.