Talked to the Green mountian people today, they would not admit to making barrels for NEF, but hinted I was correct. The told me that they made all the blued barrels (both CF and RF) from the same material, so I am wondering if I would blow my self up if I bought a 17 hmr barrel and chambered it for a 17 Remington or 17-223. I can get a new Handi in 17 hmr for $139.00, and just chamber ream the barrel, put in a new extractor and put it in my .223 frame. Am I missing something that will leave me without my hands? Larry