Older thread but I have some experience with this one. I've been using it for several years on an inline muzzle loader and love it. Throw it up to your shoulder, keep both eyes open, acquire target, & press the trigger. I've taken several nice deer on the run out to 150 yards. I don't think you will be happy out past 200 yards though as the dot will cover up a lot of the target. I have 2 or three of them that I bought at the same time and all are on short to medium range brush guns (inline muzzle loader, win model 100 in 308 & a ruger .44 carbine). Being an aimpoint, it goes without saying that it's well worth the money.