No reason to ball bust, welcome to the 308AR club. You run into problems, you will learn more about your rifle in solving them then you ever would otherwise. Boot Scraper and bfoosh maybe can weigh in. They are becoming our PSA authorities. A good general break in procedure for all AR308s, particularly stainless barrels, is to take your cleaning equipment with to the range. Fire ten rounds cleaning the barrel after each round. Then fire 5 rounds four times, cleaning the barrel after each string of five. Load the first ten rounds singly and check ejection and bolt hold open. Take a look at each round for abnormal denting, tearing of the rim, etc. Then do the same for the strings of five. Don't worry about accuracy yet. After that, get some variety of different weights and manufactures of 308 rounds and see which give the best feed and accuracy in your rifle. Generally 168-175 grain BTHP will work very well. Lighter bullets it is up to the individual rifle. But the most important rule is to enjoy the hell out of it.