Hi, new to the forum, great information. I have not had a single issue with Perfecta .45 in my Glock 21, HK USC or my Beretta CX4 Storm. I've had the same experience with Perfecta 9mm in my Glock 17 and 19, Beretta CX4 Storm (9mm version) plus my very picky Cobray. Occasionally the .45 load appears a little weak in the HK (very consistent feel, different ammo is noticeable). You can not beat the price and honestly I'm not sure why others are having problems but I've seen this with expensive ammo (even match stuff). Off topic, but if you get a chance, try a CX4 Storm, very cool rifle (compact) this is why I acquired 9mm and the .45 version. Thank you all for this great forum and member input (enjoy reading comments).