I thought I did the same to a bunch of .223,,then it dawned on me. "Don't screw it all the way down"
Ya know how hard it is to get down there with that split/spread thread they have on it? Well, I guess it's so we can adjust to what ya want,, I'm gonna trim my 7-08's too book ol, I'm using them in a NEF handi with a long throat, I don't think I want to lose any more than necessary, but as mjb said "too long" is a big deal.