plinkoAn old teammate of mine used to practice shotgun in MGE solly v. scout by having a little game of it where they'd start with rockets and as soon as they got any damage with one, they'd have to try and finish the scout off with the shotgun.
It made it a bit more challenging/worthwhile for the scout while guaranteeing they always had to use the shotgun for at least one hit to get a kill.
He isn't talking about me but I did the same thing and it helps a ton plus it helps teach you when a good time to switch to shotty is instead of just always firing 4 rockets. At this point it is so ingrained in my head to finish enemies with the shotgun that sometimes I am playiing ammomod(the 1200 health version) hit 2 good rockets on the other soldier and switch to shotty out of habit.