Re: Trouble Chambering??
From your inital descriptions is appears from here that after numerous reloads your cartridge's shoulder has moved ahead giving your headspace an incorect value. If you have a "go" gage you my check your chamber length and if it closes on your "go" it is the length of the case. I use a body die from Reding to set back the shoulder w/out resizinng the neck. Remember headspace is measured from the base to the datum line of the shoulder in non-belted cartriges.For belts, there is a new type of die. Overbore
Member, Revolutionary War Veterans Association