Well I don't think the rim diameter is the issue. the head diameter is in my mind. Going to the extra work to fireform 06 brass that has .005 to .006" less head diameter than spec. to use 1 time seems dumb to me. Build or buy a 35 Whelen or 338-06 would be a better use of the extra brass. I have had split necks with Privi and S B once fired brass, nothing wrong with my cz-550 either. But those 2 brands aren't the same quality as lapua,nosler,or Norma as a fact. You went to no small expense to aquire a 9.3 and supplies why you being a cheap Charlie now.?..mb
