I never had a problem with any Burris handgun scope, I've owned both posi lock and non posi lock, but I agree the 2-7X is my choice, and I find the 2X setting is better in that last 10 minutes of legal light over the 1.5X in the 1-4X.

I have well over 1000 rounds of brutal 460 loads on the one I have on the Encore with zero failures over the past 8 years. Thats cheaper the tasco used to be, Buy it!