If I can look down the bore of my rifle-bolt action or single shot-I'll never trust a collimator. Like many others, I've seen my share of rifles at the range that had been "bore sighted" at the store that wouldn't hit the broad side of a barn. If I had access to a collimator I'd certainly give it a try on a pump, lever or semiauto but never seen the need for it in the dozens of rifles I've sighted in. I've read lots of good tips here, thanks Mr. Howell, JB et al.
