I'm using accurate no 2 started at 3.6 and I'm up to 4.5 now. The max load it 4.6. If it still does not enject is it safe to keep going up?
I would not exceed max charge, you take a chance of over pressure. Are you getting your load data from a manual or from the powder manufacture? I'm using load data from Hodgdon. My manual did not list a charge for 115 grain FMJ bullets. I'm charging .1 grains under max charge for TiteGroup powder. I have tested 150 rounds and they have all functioned properly. Honestly, I would try a different powder, before I did anything else.