I bought two of the PC baffles (one to use and the other as a spare) for less than the price of one of the metal ones. Not to say which baffle is better, but the PC works for me helping to keep my powder throws within + or - 0.3 gr. with Green Dot or American Select. I too, am a bit surprised at the poor fit of the threads at the male end although there is no problem at the bottle end. I took the baffle on and off a half dozen times and noted the plastic threads show wear from the metal charge bar housing and the fit is what I would consider "snug". I take my PC off the Mec when I'm through reloading after reading here that the baffle can crack. I'm assuming that the ones that cracked were left on the reloader. If mine cracks either on or off the reloader, I'll be sure to post it.