I've got an itch for a 357 Sig and since I don't carry my 27 much anymore, thought I'd convert it to 357. I know the mags will work, but my question(s) are: 1. Can I use a longer barrel in 357, such as the compact barrel, such as from a 31, 32 or 33? It'd give me a little longer barrel and velocity? I'm thinking probably the 31? I'd allow me to thread the barrel, if i wanted to get a can sometime. 2. Do the lone wolf barrel drop straight in without any issues? 3. Any thoughts on a pre-threaded barrel, such as a 31 to use in my 27? Thanks!!!