[Autumn]

You can use a Corvis Cannon or Magical Nova to avoid knockback on shotguns, generally if you're running guns you wanna run MG but really Charge+Bash or sonic shell, or magical nova/corvis cannon should be all you need really.

A few things could help you out such as Deadly Smile, the new knockdown dagger or hands of the giant, otherwise you'll have to stick to Charge Bash and One-punch KO, I don't think this is inherently an issue, there's ways to achieve wild ride within DH itself.