05-15-2012, 03:07 PM
It looks like you are catching at the start of the throat.
While I don't have a credible Grendel chamber drawing, I was able to look at the SAAMI throat diameter for the .264 Win Mag (.268") and the CIP throat diameter for the 6.5X55 (.269").
It looks like you have what might be a .268+ bullet trying to go into a .268- hole. (AKA an interference fit.)
While I don't have a credible Grendel chamber drawing, I was able to look at the SAAMI throat diameter for the .264 Win Mag (.268") and the CIP throat diameter for the 6.5X55 (.269").
It looks like you have what might be a .268+ bullet trying to go into a .268- hole. (AKA an interference fit.)
