FWIW , my bro shot 2 pretty good bucks with a 42#@ 28" -- 54" kids bow proto I made last year. First buck was from ground at maybe 8 yards quartering away, arrow fell out other side. Second buck was at 10 from a tree stand, arrow stuck in dirt .
The arrow was a GT trad, think it weighed almost 500 with a 200 grain VPA 3 blade up front.
He loves the bow, I didn't like the profile. He was up and shot it, loved it. So I told him to take it home and finish it and shoot something with it. He did... LOL