There's bosses who haven't pulled the trigger and then there's bosses who have pulled it more than the guys who work for them. Most of those who haven't committed murder were named as successors by the former boss, usually out of nepotism or trust.

-I shot him a coupla' times.
-What's a couple?
-Hmm, more than a couple... Really I don't know the exact amount, maybe I shot him 10 times, 12 times?
-Maybe fifteen?
-Hmm, it could've been fifteen...

-Anthony "Gaspipe" Casso