I don't recommend the laser at all. If you fire, clear, put in laser, pull out laser, load, fire again- what is that going to tell you with all the moving around that has been done? Lasers seldom are of any value to a useful distance and in my opinion are only meant to get the shooter on paper for final dial-in.
The only useful suggestion I have is to spend some benchtime with a known value scope. If your AR does no better with a scope that you know to be good (maybe one that came off of a friends rifle?) then you should be fairly sure the scope is off. As a note, I don't know of too many instances of a bad scope only allowing (up to) a 1" wander. If your rifle was shooting a 1/2" group before, then your scope is only wandering 1/2". So, if you have a 1/2" to 1" deviation, maybe we could look at other issues? Changed lots of bullets, powder, primers, weights of bullets or powders, changed brass?
Rednecks... Keeping the woods critter-free since March 2, 1836. (TX Independence Day)
I'm going to use the words "clip" and "Long Colt" every chance I get. It grinds my gears to see new members attacked when we all know dang good and well what's being refered to.