Pilot Diameter Chart
Copyright 2019, Fred Zeglin, reprinted by permission of the author.



These Charts come from Fred’s book, “Gunsmith Tools, Cutters, & Gauges – A Primer“.
There is so much more in the book, check it out!

Copyright 2019, Fred Zeglin, reprinted by permission of the author.



These Charts come from Fred’s book, “Gunsmith Tools, Cutters, & Gauges – A Primer“.
There is so much more in the book, check it out!

4D is proud to announce that we have made an exclusive deal with Tyler Jacobs, Owner of Sherman Wildcat Cartridges. We are now the exclusive source to rent proprietary reamers and headspace gauges for the entire Sherman lineup. While Fred Zeglin was working on the second edition of his Wildcat Cartridges book for Gun Digest…
Stuart Otteson wrote two books about “The Bolt Action”, this is Volume I They are considered to be the go-to books for people who want the facts about modern bolt actions. Not only how they work but all the important engineering details. Stuart is a Mechanical Engineer by trade and he analyzed each action in…
Fall of 2020 issue of the “One Good Shot”, association President Art Lamontagne wrote about our services here at 4D. Art ordered the reamer on his own nickle and we did not know about his affiliation with the organization. [gview file=”https://4drentals.com/wp-content/uploads/2020/11/TCA_fall2020.pdf”]
Art of the Gun @ Mitchell Museum in Trinidad Colorado was held the weekend of June 9-10, 2017. This event was held in conjunction with the 70/40 Anniversary of the TSJC Gunsmithing Program. 70 years ago P.O. Ackley helped start the first gunsmithing program at any college in the U.S. 40 years ago the School joined…
An Ebook that we sometimes send to clients to answer questions: Gunsmith Tools, Cutters & Gauges – A Primer We provide this book because it contains information from the four major reamer and gauge makers in the industry and more. We have no way of knowing the experience level of the customers we are working…
No products in the cart.