I'm guessing that the 325 is a 5/16? Not sure what the 050 is? I would like to have something that would cut faster... I have about 8-10 chains for the saw now.
5/16 is 3/8LP or picco stuff and there is 5/16 cutters on some other makes of 325 in the past. 325 is 3/16. 3/8 is 7/16 or sometimes with stihl chain 13/64.
RSC chisel chain would be faster cutting but will dull quicker then RMC semi chisel chain