JackSprat
Member
I have necked down 308 brass for my 7mm08 every since I got ,and never thought twice about neck thickness,but here recently I got some 308 brass from a member on here,and I necked some down to 243..I ran them thru the 7mm08 dies,and then the 243 dies every thing went fine,and out of the twenty I did I had no problems except for 2 dented shoulders from too much lube..I measured the neck of them after loading,and they measure .274,and from looking at the dimensions of the 243 in the loading manuals they have the neck measuring .276,so I'm assuming that .276 is max diameter..Am I right in assuming these are safe,or am I missing something?.Thanks