Win large rifle primers.
Not measuring brass for expansion. The brass is still in the trash bag in my shop. Yes the barrel was pretty clean on both of these occurences....less than 20 rounds since cleaning, and this barrel copper fouls very, very little. The load data I am using came mostly from other sources, as alliant does not list the Bergers with their RL17. I found alot of people on other sites using it with very good success, and used some of their loads as a guide to work up to.

The seating depth of the two blown primers were .035 off on the one at 41grains, and .20 off on the one at 39.5. I am definitely not blaming either the brass or the primers, just want to get rid of all the variables and start over with good, published data of a well known powder with good new components. If I was operating under too high of pressure, I don't want to use the brass as it may be compromised.
I will use win brass and primers the next go round, but will be using either imr or h 4350 by the book.