An avalanche gun is the preferred way. No mountaineering skills required.
Obviates the looming prospect of having to attend a failed shot. Dud
rounds can be a concern though. Read the last paragraph here _ http://books.google.com/books?id=DEQrAAAAYAAJ&lpg=PA39&a...
Remarkably the 75mm recoilless M-20 can even be fired off the shoulder
standing. Though it's not recommended practice , it's done by irregular
combatants in the middle east all the time.