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!
Sherman Wildcat Cartridges
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…
Do you have a print for that reamer?
There is a lot to learn about chamber prints. We recommend the post on this blog. We are asked for reamer prints on a daily basis. We have never provided them as they do not represent a specific tool. Prints are representative of what you would receive. Reamer makers like all machinists use tolerances when…
Understanding Headspace: Unlocking the Secrets for Safe and Accurate Shooting
By Brady Kirkpatirick Introduction If you’re in the world of firearms, you’ve likely heard the term ‘headspace.’ But what is it, and why is it so vital? My name is Brady Kirkpatrick, the founder of GunMade.com, and I’ve spent years delving into the intricacies of firearms, including the concept of headspace. In the simplest terms,…
Learn About Pilot Fit, It Matters!
Pilot Diameter is Crucial
Another Great Book!
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…
Thompson Center Collectors Association
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”]
Gunstock How To Book Joins the 4D Family of Titles
Serman L. Mays a stock maker with more than 40 years of hands on experience making, finishing and checkering stocks decided a few years back to write a couple of books to help noobs (New Bees) get started in the trade with fewer mistakes and faster success. His book on stock making is one result…
4th Book in the “Gunsmithing Student Handbook Series” is Now in Print!
Being in the gun business for almost 40 years now I have become acutely aware if the lack of basics being taught in schools. In particular in Occupational Trades institutions. Before you send me a nasty gram defending your favorite school keep in mind I teach at one of these colleges and have friends at…