Give it a good solid twist then double it over................you can feel the good connection as you tighten
Neva had a bad connection in 40 year lol.
Ferrules are useless done by people who don't give a damn......................
Panels I check now with crimps/ferrules are done by 'monkeys' who have no idea what they are doing.
Touch them and they become loose................
Increased safety my a............................
you working in schnedier panels by any chance? i know those monkeys, thats why we use crimping pliers not ratchet as you can tell when they bite/ are tight