6 br

[Waylan Kisor]

What is the "acceptable" outside neck diameter for 6 BR. I use Lapua brass and after several firings the od is .280". Loading manuals indicate an od of
.270". Is .280 acceptable. The chamber is new.

 

[mwezell]

.272 is widely considered a tight but no-turn neck diameter for Lapua 6BR brass. --Mike Ezell