Chamber case neck

[Robinhood]

Seems loose to me. If I remember correctly SAAMI is like .344 and almost every match reamer is less. A lot could depend on how the cast was removed though. Is there any reason you turn your necks down so much without specifying a tight neck on a reamer?

[blvedere]

Was told it was a PTG match reamer. Other shooters here use that reamer and all turn there necks. I had no reason to question what the neck size would be, 20/20 hindsight, All my other Lapua benchrest brass, 6BR & 30BR, are turned to 0.012.

[Robinhood]

I have heard of a PTG match having .3435(Bisley) mostly .342 when the buyer recieved it. The one match is around .339 if I can recall correctly. Normally the Palma is used and Dave adds freebore for the heavier bullets.

[blvedere]

Thanks for the print, it looks like my case neck is about 0.006" o'size. It appears that I should not have turned the necks. If I had left them alone they had a wall thickness of 0.014/0.015. Guess if I want to use this barrel I will have to find some heaver wall brass. Do you have any suggestions? Thanks again.

[Robinhood]

Lapua and the great quality LC brass is all in the .015 range. Norma and Nosler too.