I was originally using Win 231 with Berry's 124gr HPFP plated rounds with a variety of cases and Rem SP 1 1/2 primers. Couldn't make power factor for IDPA while staying within max recommended charge.
Enter CFE-P. Found a sweet spot at 5.5 grains CFE-P with Blazer range brass, Rem SP 1 1/2 primers, Lee FCD crimp and 1.135 COAL. For the 50 round shakedown stats were: 1073 fps min, 1137 fps max, spread 64, avg 1111 fps, SD 14.4, 137 PF. These were shot out of a Beretta 92FS and experienced no failures. Groupings were consistent. Used them at last year's New Hampshire IDPA LForD match and have got to say they performed much better than I.
At 5.5 grains you'll get about 1270 charges per pound, which is fewer than Win 231 at 4.5 grains to yield ~1520/lb. (That's $0.020/charge for CFE-P versus $0.016/charge for 231, if economics are a factor, based on my average cost per pound in CT)
Ed