I got my 500 back the othre day. They replaced the cylinder stop and the hand that comes out and rotates the cylinder. Hope they hold up better than the original ones. I have shot everything from 275gr ultramax loads all the way up to 500gr Corbons. I will be shooting 300gr hornady FTX as my sight-in load and the one that I hunt with. I hope these parts breaking are not going to be a regular occurance. We'll see. Haven't heard from Leupold on what happened to my original VX-III scope or what they would recommend I put on the 500. I have the ring/scope movement figured out, if I ever get another scope on it. If I don't hear anything from Leupold, I will go with the Burris. For now open sights will do. As soon as I get them sighted in.