What does orange mmp stand for, and I assume by black crush rib you mean a sabot shroud? Not sure, see I don't know very much about this.

Dan

Allright, I'm looking in the Cabelas catalog and I'm seeing the mmp ballistic bridge sub base sabot, and what appears to be an orange one called "dead center"sabots. I also see TCshockwaves, barnes MZ's, Hornady sst, etc. So you feel the MMP's and perhaps the Barnes are the best?