This is very good practice and plinking ammunition. Not as powerful as some, but as reliable as any. I have fired way over 1000 rounds of this for IDPA practice, while using a more powerful round for competition. These have functioned perfectly in RIA 1911's, Taurus 1911's, Colt 1911's, and Taurus PT38S's. You need not worry about proper functioning. - J. W.