I have tried quite a few .177 pellets in several guns including PCP, CO2, Pumps and springers.
These worked well in all:
Round Nose
JSB Exact 10.34gr
H&N Field Target Trophy 8.64gr
Wadcutter
RWS R10 8.2gr
RWS Meisterkugeln 8.2gr
Eley Match 8.52?gr
While they might shoot "OK" in some rifles, I have never had great results with Ruger, Gamo, Crosman, Benjamin or any pointed pellets.
