I am having issues with Hornady 4DOF. I have the 4DOF Kestrel as well which I pair to the unit then lock when I get the environmentals. My problem is I can't tune the axial form factor low enough to account for the high impact I am seeing at range. I have checked all my settings multiple times. I have repeatedly tested my muzzle velocity and tested that at different temperatures to account for temperature variation of the powder, which seems to be about 0.52. This is with a CZ 457 MTR Varmint, lightly lapped barrel, head spaced down to 0.043 using SK Pistol Match. I am using the SK Standard Plus bullet in the library as it is the same lead as the other SK rounds, in this case the ammo is binned SK Standard Plus<Pistol Match<Rifle Match. My current zero angle of 0.1857, which was set over 20 shots, in the conditions tested has me tune optic to -0.05 mils at 50 yards, but at 150 and .90 axial form factor it wants 4.18 mils, and I still impact high a little over an inch. I could play with velocity to fix this, but that doesn't seem like the right approach. I have also made a test sheet for my optic to test whether or not it is adjusting too much elevation, at least testing it 0-4 mils it seems to be spot on.
I am wondering if with these soft lead .22 rounds and different barrels can lead to large variations in "BC" in comparison to their test rig for profiling the bullets. Maybe their test rig engraves the rounds more causing the rounds to have more drag then from my barrel?
The conditions tested in were Alt 568, Temp 67, Humid 29.9, Pres 29.31, wind 2-3 mph at about 1:00. Shooting angle tested at 0, Azimuth 23.