My Bullet slips nicely back into the case with, no side to side, "Wiggle" room.Interesting. We are all in the same neighborhood on NK dia. I cannot drop a bullet into my fired cases. The bullet won’t even get started into the NK. I can pretty much load it again without touching the neck. Is anybody else experiencing the same thing?
As far as I know chamber was cut with a SAMI spec reamer but the NK appears to be quite tight. NK dia on a fired piece of brass is .295” which only gives me .0015 clearance on each side.
The problematic symptom that I am having is flyers and experiencing huge groups at 1k. Gun grouped well at 600yds but not at 1k. I noticed that the fired NKs were really tight. I’ll try NK turning some brass to see if it helps..296-.297 case mouth- base of neck +0.002 SAAMI. So 0.001 spring back yields 0.295 fired. Is the case mouth getting slightly out of round during extraction, making it tough to slip a bullet in? Have you tried to brush the inside of the neck on a fired case and then slip fit a bullet? Or is the chamber producing out of round necks? Maybe a light polishing ?