Nice rifle you got, I got my first 99 in mid-November-a 1952 EG in .300, factory d&t. First load using 165 grain soft points and RL-15 went around an inch for groups, never went back and tweaked it any. We've got a 'gong' hanging in the crick about 200 yards from the house, 6" diameter or so, the 60's vintage Weaver 4x is good enough for bouncing it back and forth regularly. The two does I got this deer season were both about 80 yards out, pass throughs both times. I personally can't shoot iron sights for crap, probably cause there isn't a gun in the house without a scope on it.