Gents, Getting back into 10mm after a 5 year layoff. I will be loading everything from 135JHPs to 220TCs. I have data for all but the 220s (loaded them once before but did not keep the data). Anyone done any testing with 220s and a stock G20 barrel? I will ultimately add a 6" barrel to the stable but for now I will be using the stock barrel in my Gen4 G20. I have a wide assortment of powders on the shelf so any load data would be appreciated. Initial leaning is towards N105 or Longshot. Also, I am looking to load close to max, I do not need plinking rounds. Thanks! Wanna kill these ads? We can help!