oddball question

I have recently gotten rid of all of my .308 rifles except for the one I just put a barrel on. I used a shilen match barrel on it. Headspace is set to an absolute minimum, but it does close on a go gauge and wont close on a no-go gauge.

That said, when I size some (but not all) of my 1x fired brass, it wont fit in the chamber. Its almost like the brass isnt getting sized down far enough or is springing back too much. My die is set down about as far is it will.. there is already considerable effort in camming over the ram.

I see it as having two options to fix this. polish off .001 at a time off the shell holder till it works consistently.. which could introduce headspace issues, OR replace my lee dies with a set of better dies.

Suggestions for dies that are known to be very good with match chambers? That full length size down to absolutely bare minimums?

I've polished off .001 of the shell holder face.. .. seems to be working better, but I've only done one round so far.

its already been done. Shell holder is .001 shorter.

MTN.. it closes easily on the go gauge, and gets about 1/4 a turn on the nogo.

It was set with the go gauge in the chamber, bolt handle down. Placed a piece of cellophane packing tape on the back of the gauge before inserting. Screwed the barrel down till contact, then tightened barrel nut. Go gauge is an easy chambering. Nogo fails, almost instantly.

I suspect that NC is right.. shoulder needed bumped back a hair more. Its good to go now. Thanks for the insight guys. Just for fun, here is a pic of the rifle in question.