02-20-2020, 04:57 AM
imaguy3 Wrote:Yes it was the first firing on this starline brass.
Previously I had a batch 20rds of starline that had 26.8gr of 8208 with no marks and several firings.
Today I also fired some of this new starline with 26.8 and had marks just like you see here at 27.8.it makes me wonder if there's a factor other than pressure, especially given the velocity changes
Fire them again at the same charge and see if it gets worse.
Could be a difference in brass thickness in this lot of Starline brass. They may be fine with that load after they are shot and the case volume increases from being stretched on fireing.