MJR Posted June 16, 2013 Report Share Posted June 16, 2013 I'm running a 243 with a .275 neck. Using lapua brass I need to neck turn. Does anyone know the neck thickness of different makes of brass so I can try brass that doesn't need turning? Thanks. Link to comment Share on other sites More sharing options...
1967spud Posted June 16, 2013 Report Share Posted June 16, 2013 the lapua will give a 2 thou clerance on the neck MJR so you should be ok Link to comment Share on other sites More sharing options...
jcampbellsmith Posted June 16, 2013 Report Share Posted June 16, 2013 I've just measured some fired necks on my 243 AI for Lapua brass and they are .275 - .276. When I look at the loaded rounds, these are .270 or less. This brass is Lapua brass and hasn't been neck turned. When I look back in the book for my std .243, I see very similar numbers for Lapua brass. Regards JCS Link to comment Share on other sites More sharing options...
MJR Posted June 16, 2013 Author Report Share Posted June 16, 2013 Is 2 thou enough? My lightly neck turned brass is 14 1/2thou thick. A loaded round measures .2715/.2720 so I have a minimum of 3 thou clearance. I didn't note down what the new brass thickness was but I remember only taking a very light clean up cut, do you know what new brass measures. Thx. Link to comment Share on other sites More sharing options...
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