I've shot both FP and RN 125 9mm from Precision Bullets, and both worked without a hitch. If I remember correctly, Dave at PB sent me the FP to try one time when he was out of the RN (at no charge too!). I liked them so I ordered a couple thousand. I could not detect any performance difference between the two, and the FP loaded and fed fine. I guess I'm just a traditionalist, so I tend to stick with the RN.