Have about a half pound of Swiss 3f given to me to try out. Have only shot Goex 3f in the past. Is there a "general rule of theumb" about how much powder to use of Swiss compared to Goex. Thought I read somewhere that you use a little less of the Swiss??? Figured I would try some loads to see how the Swiss compares to Goex. Most of my Goex loads are 50 or 60 grains. Thanks