I have had a couple of Burris scopes on revolvers (a 2-7x, and a 1.5-4x with posi loc). Both of these were still the made in the USA models, and had great glass IMO. The 2-7x failed almost immediately on a Ruger 45 colt hunter. reticle turned inside the tube. Burris fixed it and had no problems after that.
The 1.5-4x I experienced the same point of impact shifts with the posi-loc on my 454 casull M83 and four ring TSOB mount. It also broke the reticle once, and splattered a bunch of debris or grease on the inside of the lenses on a different occasion.
After all this I got rid of both, and went a different route for my revolvers. Luepold FXII 2x scopes, lighter, smaller, great glass, simplicity with no need to crank on a power dial. just aim and shoot with what ya got. I am liking them a lot so far. I would like to get a 10inch or longer 454 someday and would likely put a Luepold fixed 4x on it
"If you are going to go through all the trouble to put a hole in something, why not make it a big one?"