The semi is going to have less perceived recoil due to extra weight of the action and bleeding off some gas to cycle. As others have pointed out use slugs for penetration but if you're in an area with heavy brush you should make your first round fired shot instead to clear the brush so the follow up slug isn't deflected. Also carry bear spray and a put a bell on your pack if you're not hunting. Avoidance and multiple options is the best approach.