I have a 3x9x40 simmons on my bp rifle and it does a fine job. Ive never actually used a magnification over 4x to shoot with in the woods, but I like being able to zoom in on stuff at the target range, plus if I see movement in the woods I can zoom in to get a closer look and then zoom back out for the actual shot. This scope would work well for a 30-30 also.