I noticed the discrepencies after I trimmed the brass to 2.484, using a dial caliper. Then chamfering and de-burring yielded a few more cases that were more even. I've been doing alot of reading on precision reloading and started to look the brass in the mouth.

I'm just loading for fun with this caliber. I don't own a neck thickness guage or any other fancy gizmos for perfecting the necks. I'm just doing this by eye and wondered about other rifle brass. Thanks for the all the input.