Latest News

Rental Protection Plan, 4D Reamer Rentals LTD

We at 4D Reamer Rentals LTD have long had requests for some kind of protection policy against the cost of broken, damaged or lost tools.  Our clients are responsible people who understand that under the Rental Agreement they have reasonable obligations.  This protection plan is one way to handle that obligation. There are a lot… Read more »

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… Read more »

4D Has Moved

January of 2023 we moved to Casper Wyoming. Dewain Zeglin has taken over the day to day operations of the company.  Providing the same great customer service we have always offered. New shipping address is: 4D Reamer Rentals LTD 301 Thelma Dr., PMB 202 Casper, WY 82609  

Forster Products, Reloading Fall Bash

In early September 2022 Forster Products staff and owners put on an event for Distributors of their products along with other industry contacts. The facility for the event was “The Site, Firearms Training Center” in Mount Carrol, IL. Lead Instructors: Jim Kauber & Lara Spanic were great to work with and kept us all focused… Read more »

BEWARE SCAMMERS

A client sent us the image below and asked if this came from us.  It did not.  Your account is managed by you on the web site, we will never send an email like this. Be safe out there!

Thompson/Center Collectors Association

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.

Article from the Fall 2020, “The Black Powder Cartridge News”

Our customer, Cody Smith wrote about his experience working with Forcing Cone tools in his revolver.  It’s probably faster to download the file than waiting for it to load in the browser.

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… Read more »

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… Read more »

Checkering by S.L. Mays

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… Read more »

4D-reamer-rentals

Forster Headspace Gauges.

We stock Forster Headspace gauges for sale.

After Market Pistol Barrels

In 2018 a new condition became obvious to us here at 4D Reamer Rentals LTD. In the past we saw certain reamers receive damage because of aftermarket cylinders out of Russia or China.  They were hardened by the maker to the point that only Carbide tooling could be used on them successfully.  We had clients… Read more »

Why all the Fine Print?

This week I really had to laugh! First, I had a client accuse us of using fine print, “the tool of Lawyers everywhere”!  or something like that? Next complaint from a different client, “You don’t spell it out clearly enough!” Bottom line, you can’t please everyone, or at least this week, we can’t please anyone… … Read more »

What is chip welding?

The Chamber reamers that we carry at 4D Reamer Rentals LTD are all High Speed Steel (HSS). When we inspect reamers upon return from rental we look for a few things. Obvious damage of any kind. (dings, chips, modifications, burns, rounded edges to name a few) Dirt/metal chips from the reaming process Oil (in excess)… Read more »

MEASURING FOR SCREW-IN CHOKES (Shotgun)

Before accepting a barrel for machining to accept screw-in chokes, you must measure the outside diameter (O.D.) to determine if there will be sufficient wall thickness after machining. “Mike” the O.D. of the barrel and the O.D. of the tap for the particular gauge. Subtract the O.D. of the tap from that of the barrel,… Read more »

To Laugh or Not to Laugh, That is the Question.

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.”… Read more »

224 Valkrie Dimensions

224 Valkyrie Specifications Published

SAAMI Publishes Approved 224 Valkyrie Cartridge Specifications March 27, 2018 – The Sporting Arms and Ammunition Manufacturers’ Institute (SAAMI) voted to approve the Federal Premium 224 Valkyrie as an official new cartridge during their committee meeting at the 2018 SHOT Show in Las Vegas, Nevada this past January. 224 Valkyrie’s SAAMI standards documents are now… Read more »

P.O. Ackley

Ackley Category Added to the Site

We have seen a ton of demand for Ackley calibers since the publication of Fred Zeglin’s two new books in 2017.  For this reason we have created a category on the 4D web site to separate out all Ackley cartridges making them easier to find.  They still appear in the standard caliber listings as well…. Read more »

Me Me, its all about Me

Why Are There NO Good Gunsmiths Around Here?

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… Read more »

22 Rimfire Ammo

22 Long Rifle, so many Choices of Dimensions…

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… Read more »

Gunsmithing Student Handbook Series

Fred Zeglin released two titles in his new series of instructional books for anyone who wants to understand how guns work.  Tailored to students of gunsmithing, whether you are a hobbyist or a professional Zeglin bring over 3 decades of gunsmithing and teaching to the table.  These books are clear and concise detailing specific subjects. Lee… Read more »

Over 1100 reamers in inventory!

More Tools, More Service…

As of October 2017  4D Reamer Rentals LTD now has over 1100 reamers to serve your gunsmith rental needs.  It’s pretty exciting how much this company has grown over the dozen years we have owned it.  We plan to continue adding tools and services. Please check out the products we sell on top of the rental… Read more »

7.21 FireHawk, Lazzeroni

Designed by John Lazzeroni and introduced in 1996. This 7mm cartridge was dropped from the Lazzeroni line in 1999 when the 7.21 Firebird came out.  It could push a 120 grain Barnes X at 3697 feet per second.  As well as a 140 grain at over 3500 fps. We picked up the reamer for this… Read more »

Art of the Gun, Tinidad Colorado, 2017

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… Read more »

Fred talks about P.O. Ackley

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… Read more »

Nosler Chamber Reamers & Gauges

Several years ago Nosler took nearly every caliber from 26 to 36 to SAAMI.  As soon as they were approved we bought all the reamers and gauges.  The 26 and 28 Nosler are the only cartridges that share the same headspace gauges in the Nosler factory line-up, all the others have their own specific gauges…. Read more »

To Gauge or not to Gauge? Liability is the question. Part II

Part II If there are times when using brass to gauge headspace is OK then there must be times when it’s a bad idea.  High intensity cartridges Wildcat cartridges Ackley Improved cartridges High intensity cartridges run from 47,000 PSI to 65,000 PSI.  A high intensity cartridge with a little headspace can cause all kinds of… Read more »

To Gauge or not to Gauge?  Liability is the question.

Part I We talk to hundreds of gunsmith’s each month.  It surprises me how often these “professionals” decide not to use a headspace gauge when they are available to them.  They say, “No, that’s OK I will just use brass.” The reason that we are still using brass cases in firearms after more than a… Read more »

P.O. Ackley, America’s Gunsmith, a new book by Fred Zeglin

I doubt that P.O. Ackley set out to be famous.  But life has it’s twists and turns, Ackley worked hard to learn his trade and equally as hard at putting out the word about his work.  He became acquainted with many gun writers and leaders in the gun industry. In 1936 he made the decision… Read more »