I didn't see this DR myself yet, but I asked this man about bore dimention several times and every time he replied bore = .450, grooves .458. Well. I guess it's 450 for real.
Then I asked about some 'shoulders' on chamber cast alluding to 500/450 case, but the owner is sure there is no any shoulders on case, it's straight and tapered.
Previuosly he was sure it's 3 1/4 case and has bought 20 cases from US, but when he got these cases, he can't insert case in chamber in full. Aprx. 1/4" of case sticks out from chamber.
Is it possible brand new cases have to be formed again before using?
