I like AI cart's, and, if rebarreling, will consider the AI version, but I don't think any barrel is worth converting to AI if it still has life in it.

So, is it "worth it"? I don't see how it is worth the hassle or the effort or expense. However, if you are getting a new barrel anyways, I gotta think it's absolutely "worth it" because there's no real downside to it, assuming it feeds alright. OCCASIONALLY they don't feed as well.