How Krieger builds barrels This video shows how Krieger Barrels makes cut-rifled barrels. Krieger Barrels is one of the best barrel manufacturers in the world. Cut-rifled Krieger barrels are used by many top shooters and have set many world records. The video shows the complex and large machines that are used – hydraulic riflers and bore-drilling machinery. You can also see barrels being polished, inspected, and contoured. This video is a must-see for anyone interested in accurate rifles. Watch blanks being cryogenically-treated, then drilled and turned on a lathe. Then comes the big stuff – the massive rifling machine that cuts the rifling with a single point in a precise and time-consuming procedure. You can then see barrels being polished, contoured and inspected with an air gauge and borescope. There is a sequence that shows the cutting of chambers. Click the Arrow to Watch the Krieger Barrels video:Here is a timeline of the barrel-making process. You can use the “Pause button” or repeat certain segments to better understand a particular operation. The numbers on the right represent playback seconds and minutes. The video below shows the Krieger Barrel Making Processes: 00.24 – Cryogenic Treatment of Steel Blanks
00:38 Pre-contour barrels on CNC lathe
Drilling Barrels
01:28 – Finish Turning on CNC Lathe
01:40 – Reaming
01:50 – Cut Rifling
Hand Lapping – 02:12
02:25 – Cut Rifling
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. The machines weighed three tons and needed the concrete floors that were common in workshops at this time. These hydraulic machines were scarce on the surplus market, and are now sought after by barrel makers such as John Krieger and Boots Obermeyer. There are probably fewer ‘B’ hydraulic riflers than the older ‘Sine Bar universal riflers’ today.” — Geoffrey Kolbe of Border Barrels.
