07-17-2012, 02:02 PM
I would be shocked if the put out a 300 whisper probably going to be a 300 black out which is honestly better jd jones has not let anyone put his whisper into an ar other than him such that I am aware black out has a looser neck which is better than whisper especially in an auto the whisper was initially formed from the 221 and most everyone uses 223 brass as it is much stronger and more plentiful but you get a thicker neck when making brass from 223 which can be a problem if you have a true whisper chamber