If you stay away form bone in the elk and moose you should be ok with the 150 AB. Either powder you spoke of will work. If you want to give another bullet a try for the deer give the 125 Nosler BT a try it has lots less felt recoil than 150s. Just keep the impact velocity under 3000 fps and man is it a deer killer. It is all I use in my 30 cal. firearms for deer and has done great to a little over 300 yards out of the 308 Win. I use 46 grs IMR 4895, WW case, CCI BR2, in my 308 Win 21 1/2" Heart barrel does right at 3000 fps and shoots bug holes. This load has worked great in a number of rifles that I have gotten people to give it a try.