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.There are a lot of considerations when creating such a plan to help protect our clients from possible expenses.  So we surveyed clients to see what they wanted in a protection… Read more »

There’s an app for that! Headspace Gauges

We have long looked for the most efficient way to share information with our clients. Apps are all the rage and they really can be time savers.  We decided to set up the GaugeGuide app. It will help you not only find the correct gauge for your gun, it will also tell you all the… Read more »

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 »

Special Offer!

We have a limited supply of  South Bend Lathe nostalgic wall clocks (14″ diameter) to give away with qualifying orders.  These are very nice quality and look great in the Shop or the Man Cave. Order $200 or more in purchases or rentals on one invoice.  When you do, enter the coupon code: SBC at… 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 »