170 bar is alot of pressure ugg , I think of that tiny probe bolt isnt made for hi pressures , unless you guys like tap thing out to bigger size or double bolt it , I remember mine was a tiny screw holding the bolt from launching back , I was afraid to go to high cause of this back then , I was completing when i had one to makes a steel plate and beef up buttplate with alike armor just incase it let go
LOU
LOU
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