I ordered a.22-243 win barrel for my dpms lr308, I got the barrel and did a.chamber cast and the chamber has a steeper shoulder angle and longer neck, gunsmiths claims its a.stamdard 22-243 but its not, If I figure out how to post a picture of the chamber cast do you gjys think you could tell me what it is, originally all I wanted was to take 243 cases and neck them down to .224 and clean up the necks, ie a 22-243 win with no other changes and this has turned into a giant fiasco. I think the chamber is a 22-243 middlested but not sure