I have a case extractor tool for removing separated case heads . This got ME to thinking can you really see signs before it happens ?.
I'm not positive that's 100% reliable ,as I've had a couple over 58 years and NEVER saw them coming . I still use a paper clip inside especially on MY Belted magnums ,the belt can deceive the eye .
What I've never experienced is case head separation this high up the body ,have any of you ?. I've never even seen any this high up .
First video , the second video , OH Yes absolutely and that's normal occurrence and what I've experienced .
Fyi : I'm on #46 reload 1 grain under max for all reloads with some 1942 ,43 LC & SL M2 .30 Cal. brass ** ,that I reconditioned ( Ultrasonic cleaned prepped partial annealing or ductility restoration ) . I'm firing them out of a couple of My Garands and haven't even lost a rim . I did lose two cases ,due to MY cutting them , so as to properly measure wall thickness . I'm determined to see IF I get #50 reloads on these cases safely . That brass ** was left on a military range for perhaps 40 years ,before a friend acquired it . He in turn left it outside in plastic buckets for another 30 + years , before I finally got hold of it . Then 8-10 years passed Before I did anything with them ,as they were Extremely UGLY in the beginning . Before & After ultrasonic cleaning photos .
There were also 1954-56 , as well as match 1957-68 , 7.62X51 cases mixed through out the lot. Oh what joy separating all of it ,NOT !