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 »

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 »

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 »

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 »