For PCC I've been using 124 @ 1.125 over 3,1 grs. N310 Same charge for 115s and 100gr, hollow base Berry's, all my PCCs run Taccom bolts barrels and recoil systems they all shoot like 22s
My Taccom ULW 9 out groups my buddies JP barrel , and with the top feed ramp my pcc eats anything . And if you send Tim your bolt he modifys it at no charge I ended up buying his bolt and recoil system I can't say enough good about Taccom great stuff.