I have an APC9 Pro that I was trying to zero at 75y. This provides the flattest trajectory from 0-100y.
I was shooting over a Chrono because I also wanted to make sure they were staying subsonic.
147gr Speer Lawman was fantastic. With 47 shots the SD was 9, Average 1056, and ES was 45fps. Rounds were right where I wanted them.
147gr GDHP was not so nice. The first string of 15 GDHP average velocity was 1004, ES was 165fps, and SD was 24.
The second string of 15 GDHP was 1070fps average, 57 ES and 14 SD.
Sorry for all the numbers, but something was really funky with that first string of GDHP. All the rounds below 1020fps ish shot about 6-9” low at 75y. I would shoot, look at the velocity, and if it was around or below 1000 I would already know the shot went low before I even looked in the scope.
Kind of a bummer because the Lawmens in this gun shot amazingly well. Almost no POI shift with or without the can either. But if I’m shooting a 9mm I want HP ammo.
Anyone ever had similar experiences with GDHP?
Bookmarks