Thread: 223 chamber issues

Hello - My 223 target rifle is a Keiger barrelled Omark. It shoots very well with 24.5 gns of 2208 behind 80 gn sierra's. It came with a bunch of brass, all FC (Federal) nickel plated stuff. The stange thin is that this rifle (and brass) was one of Din Collings own one's - why he (or Val) chose Federal nickel brass is anyones guess.

However the rifle has an annoying habit - unless I champher the hell out of the outside of the case necks it will flatly refuse to chamber them. Its not a sizing issue, if I pull the projectile and re champher one of the problem rounds it then goes in fine.

I don't think its a neck thickness issue, fired cases measure .2485 to .250 (loaded ones at .247).

I want to get a new batch of brass but it would be good to have the chamber sorted before I commit to that.

Is it possible to have a fault in the chamber that would be causing the feeding issue and how could it be sorted (without messing up a rifle that shoots superbly)

Thanks