New Upper Range Report--Issues
I've got several AR format rifles, but haven't had a Grendel until I bought an upper from PSA recently. I mated it with a Colt lower that has a Timney trigger, and took it to the range today. I left the Magnetospeed at home this morning, planning to just focus on breaking the rifle in and shooting for groups.
I'd bought a box of Hornady Black 123gr factory ammo, and reloaded 25 rounds with unfired Hornady brass. The reloads were 95gr Vmax, Rem 7 1/2 primers, and 30.8 to 31.6 grains of H335.
At a 100 yards, groups were lousy....only really decent one was 31.6gr and that was a shade over an inch.
The real issue was that it wouldn't cycle my reloads...but the factory rounds were fine.
Maybe it's a buffer or gas block issue, but I'm stumped about why it handles the Black 123's going around 2500 fps, and not my reloads which were certainly moving at least a couple hundred fps faster?
Your input appreciated.
George
If we want to regain the respect of the world, we should begin by announcing that children have no business expressing opinions on anything except "Do you have enough room in the toes?" -Florence King
Bookmarks