I am fairly new to reloading but am being coached by a friend that reloads for his 22-250 but has no knowledge on the 300 wsm. I have tried the Reloder 17 at 69.3 gr. and the IMR 4831 at 70 gr. both under 150 gr. Nosler Ball.Tip bullets using cci magnum primers with no luck.Appox. 2 in.groups at 100.This rifle was shooting .5 with factory loaded 130 gr.barnes.These factory loads are just way to expensive to buy and i have also been told i need to go up on my bullet weight in this caliber.Can anyone give me some more good powder ideas and tell me were i should try to have this rifle at on my chrony for max speed as well as max accuracy.Thanks in advance for any replys.