After a lot of reading and conferring to my Sierra 5th edition manual I finally bought some H322 today. I've noticed that Brian Pearce highly recomends this powder with both 150gr & 170gr bullets. He has made mention of 31.5gr in several articles, according to him it has always performed very well in several rifles over the years giving both great accuracy and performance. My Sierra manual also listed this as either the powder to use for accuracy and for hunting loads. So does anyone here use this powder in their 30-30? If so how has it performed for you?