Something odd with the setup you had a problem with—my 6.5cm is at about 28moa to hit 900 yards, if you had a 20min rail and could only dial to 900yds with a prc theres something very wrong. It almost sounds like the rail was mounted backwards, THAT would do exactly that.I’m shooting a 6.5 prc so pretty flat. My first scope I mounted supposedly had 85 moa elevation travel and a 20 moa rail and I ended up with just enough travel to reach 900 yards after zeroing. The scope I have right now is mrad same scope but has enough to get me over a mile. So maybe the first scopes QC sucked and had less travel. I’d like to be able to shoot out to 1500 or a mile for fun every once in a while with it.
Regardless, 75 or 80 moa total travel will get you out a LOOOOONG way with an elevated rail.