So a buddy of mine gave me some old 416 Rigby ammo loaded by a company called Conley Precision Cartridge Company out of Como, MS. It's a 400 Gr. Hornady FMJ Round Nose loaded in Jamison Brass. I've been searching the around but I can't see to find much information on it, and that what I do find is generally less than stellar. However the most recent reviews I could find were from 2008.

Anyone have any experience with Conley ammo or has some knowledge of their company? Appreciate any help ya'll can give.