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!

One of the cool things about writing a book is that during the research for the book you learn a lot about people. I was able to interview a number of interesting and well known folks in the gun world while researching P.O. Ackley, America’s Gunsmith. If you would like a little more behind the scene…
You hear some things on the phone that really make you laugh when you rent tools. They might not be funny to the average tool user but maybe we need to share them to clear up some misunderstandings? One of my favorites is, “That barrel has been in the lathe forever waiting for the reamer.”…
For those of you who love the 22 LR, you know there is a wide variety of ammo and chamberings for this cartridge. Below is a chart of the various chamber dimensions that are popular. Yes, there are more than this, but this covers most of what people ask for. 22 Bentz is commonly used…
We recently put “Checkering, a book of checkering for the beginner” Back in print. This popular book deserved a second printing, so we did just that. It’s already on Amazon, on our site and soon will be in the hands of other book sellers. Just as the title indicates, this is a book that you can…
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”]
Diplock’s Syndrome For those of you who have not read Fred Zeglin’s book on Wildcat Cartridges, here is a little excerpt you might find amusing. “Diplock’s Syndrome,” a syndrome contracted by gunsmiths. The cause is close contact with clients or customers who lack patience, and often what we used to call common courtesy. Custom guns are hand…
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