(03-02-2022, 12:06 AM)r.tenorio671 Wrote:Yes shoulder datum measured with a Hornady headspace comparator using the correct 350 adapter. I didn't resize and fire any rounds with the Rubber City bolt (that's what I was about to do and why I was checking fitment), I don't want to crush my brass down that far to make it work and it's not properly made regardless. With my Aero bolt fired Hornady brass would measure right at 1.191" before the bolt was damaged. That dimension grew a little and is what caused me to closely inspect my original bolt.(03-01-2022, 11:58 PM)popgun Wrote: Looks like number 5 will be a JP for me too. I just received the Rubber City bolt and the bolt face depth is only .133" maybe .134". Went to check headspace and a case sized to 1.188" is snug with my previous bolts, I went down to 1.186" and the bolt was an effort to close and I fought to get it back open. So that led me to check bolt face depth.
...Popgun, is that the shoulder datum you are referring to? Have you measured any of your fired cases to see how much they blew out to?
r.tenorio671 the 1.188" in the first post you replied to was resized to that dimension.