Fred Zeglin has been building custom rifles for over 30 years and specializes in wildcat designs for his clients. He is currently the Firearms Technology Coordinator and the NRA Short Term Gunsmithing Program Coordinator for Flathead Community College in Kalispell, MT. He owns 4D Reamer Rentals Ltd. so he deals with more reamers and headspace gauges than any other gunsmith you will ever meet. Andy Hill at Hawk Bullets, had this to say about Fred, "During the normal course of business we have gotten to know some gunsmiths with superb skills, artists crafting metal and wood into fine and functional firearms. Usually their ballistic knowledge is well rounded, but we believe one such gunsmith is quickly becoming a modern day P.O. Ackley. He is Fred Zeglin and he has done extensive development of a line of wildcat cartridges gaining popularity for their ballistic properties and low felt recoil." Fine praise from a craftsman of quality bullets. Fred has taught NRA Gunsmithing courses in Wildcat Cartridge Design at Murray State College in Oklahoma, Flathead Valley Community College in Montana and Trinidad State Junior College in Colorado. He also worked with American Gunsmithing Institute (AGI) to create a Wildcat Cartridge lesson and Reloading instruction on DVD. Fred also writes a gunsmithing blog, that can be found at: https: //gunsmithtalk.wordpress.com This book is part of a series of gunsmith manuals that Fred is writing. Titles include: Understanding Headspace, Chambering for Ackley Cartridges, Relining Barrels, Glass Bedding Rifles for Stability and Accuracy, and Chambering Rifle Barrels for Accuracy. Look for other books in the: "Gunsmithing Student Handbook Series".