Learn All About the Cut Rifling Process — Watch Krieger Video
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 |
“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.
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Tags: Barrel-making, Cut Rifling, Krieger Barrels, Krieger Video, Single-point-cut