Electrochemical Rifling Barrel, maybe we are on the right track.

[PCPdrug]

The ExtrudeHone company presented its rifling barrel method as the best so far in terms of speed, precision and price, I hope it's not a fairy tale.
https://www.defenseandmunitions.com/article/electrochemical-rifling-extrude-hone/

 

[jps2486]

ECM may cause metallurgical issues depending on how well it's done. Not always the the best method, but worth a look.

 

[Pumacarl]

It's interesting to see people trying different approaches.

 

[Hateful McNasty]

It's interesting to see people trying different approaches.

It beats stagnation.

 

[Moose]

Very interesting read. Very similar to Electrical Discharge Machining (EDM) and the liquid hone process I was exposed to in the 1970's. The article stated that the process was patented in 1986 and moved around to several companies. The process burns in the rifling grooves by removing barrel material using electrical and chemical process.
Since this process has been around, are there any products on the market? Has anyone seen, used or heard of any barrels from this process? With the claimed advantages of this process being lower time to produce, less steps and higher quality, companies and customers should be expecting this to be on the market. After 38 years, you would think that this project would be further along. I wonder what the holdbacks are?
This sounds like the definition of stagnation to me. Very curious!