It sure is funny. I get 170-175pf from those loads. My gun is only three years old. Have you guys noticed a change in power factor as your round count increases?
none significant (if at all) decrease of PF at my guns in the tens of thousands rounds
3,5 BA10 or 4,2 N310, 225LRNBB (saeco molds)1,145 OAL
more funny differences are betveen chrony