6mm Valkyrie Feb 29, 2020 13:08:14 GMT -5 via mobile Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by johnnywadd75 on Feb 29, 2020 13:08:14 GMT -5 Anybody ever built a 6mm Valkyrie I’m in process of build one on ar15 with shilen xx barrel to shoot around 75 grain bullets for nighttime coyote hunting