Strangely Brown Posted January 12, 2019 Report Share Posted January 12, 2019 I've just switched over to Sierra TMK 155 gr (308) and realise my normal OAL for the old SMK is too long for the magazine. Rifle is an AI AE MkIII using AICS Mags. Your thoughts on a suitable gap between bullet tip and magazine would be gratefully received! 🙂  Link to comment Share on other sites More sharing options...
No i deer Posted January 12, 2019 Report Share Posted January 12, 2019 I would of thought a minimum of 10 thousanths clearance would be needed to avoid any jams. Your mags internal measurements my vary. What bullet were you using before Strangely..? You could single feed but that's no good for your McQueens COF's  Link to comment Share on other sites More sharing options...
Strangely Brown Posted January 12, 2019 Author Report Share Posted January 12, 2019 The TMK 155 gr has replaced the 155gr SMK (2155) I have used for some years. Ironically I had to single load on Tuesday when I realised that the 50 rounds I had made up didn't fit the magazine! I think the next step is to measure the internals of my 6 mags and do another shoot to make sure there is no lack of grouping by seating the bullet deeper. Link to comment Share on other sites More sharing options...
No i deer Posted January 12, 2019 Report Share Posted January 12, 2019 The new TMK's are a different shape to the old smks, probaly more pointed so the jump the the rifling maybe quite a bit depending how much throat wear your barrel has. You definately need to check the accuracy compared to your old load. Link to comment Share on other sites More sharing options...
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