Depends on where gun hits ogive to be 100%. I like 4831sc in 6x47 - in 6.5x47 I luke URP. getting in low teens with 140 BTHP from Hornady. I have a Bartlein 5R with 2200 through it and the BTHP is more accurate now that I am chasing the lands. Was using Reloader 16 and N550 - with Berger 1el30...