GCd, I'm old and rickity. Can't say there was a difference between the BLL or PC, FOR CGd. Next time I'll zero @ 100 get some scope dope, don't really know where it's at. SST looks right on but cast is crazy. Ballistics says 5-600 fps difference to get that trajectory. I did put some unknown junk on the target, just to get used to the new stock.