I am not sure the .223 broken tool will work in the Savage 40. Because it is build on a rim fire receiver the ejector post is right in the way. I tried using a Hornady Lock n Load tool in it for checking bullet seating. It's a no go. I like my 40 it is a very accurate rifle and I hope my new M25 is as accurate. I haven't personally has case separation but I have had PPC cases get stuck in the chamber. I determined that the ones that did were longer than the ones that did not.