I found H1000 great with the 162 amax. I think it was 78.7 grns, driving the amax at 3200 (obviously be careful and work up to this). Re 22 got me more velocity, but H1000 had better SD and is regarded as being less temperature sensitive so I settled on this. Also 3200 fps is plenty
. Great cartridge, you should have alot of fun.