While I don't believe a repeater is a necessity, I prefer one for LRH. On a hit animal, even though down with a good hit, I like to reload and retain sight alignment as quickly as possible for about a minute. I have had a couple of occasions over the years where a mortally hit animal got back on his feet. It's hard enough finding the animal 1000 yards away, let alone a blood trail. Additionally, a few years ago I filled a tag on a nearby antelope doe after the buck was down. I was able to acquire the sight picture on her in seconds.