That could have been disastrous. I check quite often just to see how far off weight they are. Some are very inconsistent and up to .6 grain off labeled weight.
I have some but been using Prime brass I bought some years ago when they were in litigation with their brass maker. Got couple hundred or so cheap at Midway.
I have a SA Remington that sometimes does not engage the trigger. Thought it may be the bolt so I put a bolt in from another REM SA and same thing happening. Could this be the bolt stop causing the issue?