This topic could easily apply to just about any firearm including the 450 Bushmaster, but right now, let's discuss my current build, the 6.5 Grendel. This is what I have so far. I assembled the upper just to make sure I had clearance between the scope and the hand gaurd. the clearance right now is approximately .300". The distance between the center of the bore from the crosshairs is approximately 3".
With a Grendel, is this plenty of height, or should I go higher?
As I previously pointed out, this is only a preliminary fitting and I know that I am going to have to install the barrel first before installing the hand guard and other goodies. I haven't tightened anything down. The Barrel has not arrived yet, but will be an AA 24" Stainless with a threaded muzzle.