Cienfuegos Posted April 30, 2018 Report Share Posted April 30, 2018 I have to buy the bushing for my 7mm R SAUM and I do not know which, before the rifle arrives ... what is the usual size of the neck of the standard bedroom? the usual thickness of brass 0.140 Norma? I have to calculate a voltage of 0.002 and a chamber space of 0.005.Thank you. Link to comment Share on other sites More sharing options...
No i deer Posted April 30, 2018 Report Share Posted April 30, 2018 I can check my new norma brass later that I've got that's not neck turned yet but guessing it's probaly 17 thousanths neck wall.the bushing size depends on what the reamer was.you need a bush 2 thousandths small than the loaded neck measurement for 2 thousandths neck tension.atb No I deer Link to comment Share on other sites More sharing options...
GT3_richy Posted April 30, 2018 Report Share Posted April 30, 2018 This lot averages .01565-.01575 mid-neck using a Motutoyo tube mic. Link to comment Share on other sites More sharing options...
No i deer Posted May 1, 2018 Report Share Posted May 1, 2018 That's what it is then.sorry mate ive not got around to checking yet. Link to comment Share on other sites More sharing options...
Cienfuegos Posted May 3, 2018 Author Report Share Posted May 3, 2018 Thanks Link to comment Share on other sites More sharing options...
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