Exempting revolver cartridges.....the only thing I' d crimp is ammo for tubular rifles. One might make the argument that you should also crimp ammo for dangerous game.........big bears, elephant, Rhino etc.....

I' ve never hunted them , but I' d surely use hand loads and they' d be the best I could make..........and yes...crimped.

Other than that.....it' s a waste of time in my book.