Rifling type

[JFrames4ever]

I just purchased an S & W model 686 + Performance Center sku 11760. The website does not say if it has EDM or broach cut rifling. The dealer didn't know either. Anybody know?

 

[Pizza Bob]

First, it's ECM rifling, not EDM. As to whether yours is ECM or broach cut, you may be able to tell with a visual inspection. Broach cut rifling has very "square" corners in the transitions from lands to grooves. ECM has a more rounded transition and it's sometimes mistaken for polygonal rifling.

Adios,

Pizza Bob