What boolit are you using with your 4759? What charge weight? Finally on your 1903's what sight setting do you use? I just loaded some 311299s sized to .311 with a starting weight of 21.5 gr of 4759 per my manual. My most difficult issue is what sight setting get to start with.
I use the 311299 with 17 gr of 2400 but can never get on paper at 100 yards because of the sight setting issue. I find myself sticking to 25 yards just so I don't get frustrated and give up.
Any help you can offer would be much appreciated.