Re: Nosler Custom Competition Problem
What queequeg said....something seems amiss here. I have never had such an issue, and I shoot a load of the CC's, in all weights. Standard seating depth (use same seating die for all weights) and just vary powder and/or powder chaarge without issues. I really wonder if somehow you have an odd sized bullet that you managed to get into your cases, or if maybe you have some other odd thing going on.
I have a good friend that had inadvertently adjusted his die such that the crimping ring was just slightly engaged, and this caused the case to swell at the neck enough that the rounds wouldn't chamber--unless you have a different die or adjusted it a good bit from your other rounds that seems unlikely though....be curious to see what you figure out....
Good luck