I’ve never had not having a scope cost me a bird......but I’ve had some close calls at close range, where I clipped a neck with the edge of the golf ball sized pattern, inside 15yards. I intend to go to one, but think I’d prefer a scope over a red dot....just because I’m not a huge RD fan for hunting and didn’t like the FF2 I did try a while back. I’d think that Pentax 2.5 would be a heckuva start.