And now that you mention it none of my 45 Colt Blackhawks would zero with 300 or 325 grain bullets, even with the rear sight screwed all the way down. They were obviously set up for 255 way back and nobody made the change when heavy bullets became popular. Seems like I relieved the bottom of the rear sight body and filed the top of the blade down a little bit to make it work.
Strangely all my 45 Colt Vaqueros were pretty close with 300 grain bullets.
Last edited by SargeMO; 10/21/20. Reason: Damn voice text
