You see, we have a different opinion here, and, unless you want the world to stop turning, there must be differences in opinions. A few years back, I bought an aftermarket "match grade" barrel, and, after 20 years of never a problem with my reloads, with the extremely tight chamber, the problems started. I used the FCD and all problems vanished. That is why I now, and will continue to use the FCD. As far as accuracy loss that you mentioned, I guess I'm not using "wrong" bullet type, because I've had no experience, whatsoever, of accuracy loss. As far as I'm concerned, it's the best $10 I've ever spent, for an unnecessary reloading tool!