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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)…
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…
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… …
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. [gview file=”https://4drentals.com/wp-content/uploads/2020/09/BPC_Fall_20lr.pdf”]
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.”…
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…

