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October 25th, 2023

Powder Mistake Results in Dangerous Revolver Kaboom

Revolver kaboom wheelgun explosion mistake reloading powder safety

This shocking Revolver Kaboom resulted from “user error”. Our friends at Midsouth Shooters provided this cautionary tale, noting that you must ALWAYS be careful when hand-loading any ammo. Check your loads and don’t have multiple powder containers in your reloading area.

Revolver kaboom wheelgun explosion mistake reloading powder safety

“Ever wonder what happens when you don’t pay attention to detail? A word of advice from the reloader who brought this in — always double-check the load data.

Thankfully, the shooter was unharmed in the explosion. A live round we recovered from the remaining portions of the cylinder contained 12.8 grains of powder. The shooter had multiple powders on his bench and was unable to recall which one had been used while loading.” — Midsouth Shooters

Revolver kaboom wheelgun explosion mistake reloading powder safety

How to Avoid Kabooms

1. Never have more than one powder container open on your reloading bench at the same time — when you are finished with a powder, seal the bottle and put it away.

2. If there is already powder sitting in your dispenser, and you’re not 100% sure what it is — throw it out. We suggest, whenever you fill a powder hopper, put a piece of paper in the powder hopper with the name of the powder and the date.

3. When loading a new cartridge or when using a new powder, get load data from more than one source. Always load conservatively to start!

4. Always double-check your Load Data before starting the loading process.

5. In short handgun cases, bullet seating depth can make a BIG difference in pressure levels. Be sure to check your Cartridge OAL.

Revolver kaboom wheelgun explosion mistake reloading powder safety

Credit Boyd Allen for Finding this content.

Permalink - Articles, Reloading, Tech Tip 2 Comments »
October 25th, 2023

Krieger Cut-Rifled Barrel-Making — Start to Finish on Video

Krieger Barrels Cut Rifling Cut-Rifled Barreling

How Krieger Builds Barrels

This video shows the process of cut-rifled barrel-making by Krieger Barrels, one of the world’s best barrel manufacturers. Krieger cut-rifled barrels have set numerous world records and are favored by many top shooters. The video show the huge, complex machines used — bore-drilling equipment and hydraulic riflers. You can also see how barrels are contoured, polished, and inspected.

For anyone interested in accurate rifles, this is absolutely a “must-watch” video. Watch blanks being cryogenically treated, then drilled and lathe-turned. Next comes the big stuff — the massive rifling machines that single-point-cut the rifling in a precise, time-consuming process. Following that you can see barrels being contoured, polished, and inspected (with air gauge and bore-scope). There is even a sequence showing chambers being cut.

Click Arrow to Watch Krieger Barrels Video:

Here is a time-line of the important barrel-making processes shown in the video. You may want to use the “Pause” button, or repeat some segments to get a better look at particular operations. The numbers on the left represent playback minutes and seconds.

Krieger Barrel-Making Processes Shown in Video:

00:24 – Cryogenic treatment of steel blanks
00:38 – Pre-contour Barrels on CNC lathe
01:14 – Drilling Barrels
01:28 – Finish Turning on CNC lathe
01:40 – Reaming
01:50 – Cut Rifling
02:12 – Hand Lapping
02:25 – Cut Rifling
02:40 – Finish Lapping
02:55 – Outside Contour Inspection
03:10 – Engraving
03:22 – Polish
03:50 – Fluting
03:56 – Chambering
04:16 – Final Inspection

Krieger Barrels

Pratt & Whitney Cut rifling hydraulic machine

“At the start of World War Two, Pratt & Whitney developed a new, ‘B’ series of hydraulically-powered rifling machines, which were in fact two machines on the same bed. They weighed in at three tons and required the concrete floors now generally seen in workshops by this time. Very few of these hydraulic machines subsequently became available on the surplus market and now it is these machines which are sought after and used by barrel makers like John Krieger and ‘Boots’ Obermeyer. In fact, there are probably less of the ‘B’ series hydraulic riflers around today than of the older ‘Sine Bar’ universal riflers.” — Geoffrey Kolbe, Border Barrels.

Permalink - Videos, Gunsmithing, Tech Tip No Comments »
October 25th, 2023

Learn How to Upgrade and Customize AR-15 Platform Rifles

AR AR15 Armalite Black Rifle Book Gun Digest
Photo Courtesy Cabela’s Gun Sports

Kevin Muramatsu’s black rifle book, the Gun Digest Guide to Customizing Your AR-15, is a great resource for fans of AR-platform rifles. All the AR options you can imagine are covered: suppressors, premium barrels, adjustable stocks, free-float handguards, ergonomic grips, buffer systems, tactical lights and much more. Those planning an AR rifle build will find application-specific suggestions for 3-Gun, Service Rifle, High Power (Space Gun), Hunting, and Self-Defense use.

AR AR15 Armalite Black Rifle Book Gun Digest AR AR15 Armalite Black Rifle Book Gun Digest

Firearms expert Muramatsu offers advice on choosing the right stock/barrel/optics configuration for your particular game. He also discusses the wide variety of options for slings, grips, magazines and other accessories. With over 520 photos, the book includes a large photo gallery of customized ARs, and includes bonus coverage of the FAL and other “tactical” firearms. The Gun Digest Guide to Customizing Your AR-15 is available from Amazon.com (#ad) for $35.95, and a Kindle eBook version is offered for $14.99. The book is also sold by Barnes & Noble, and most other major booksellers.

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Permalink Gear Review, Gunsmithing, Tactical No Comments »