The reason why I ask is, My son has a Model 10 4" also he wants to keep in the nightstand on his wife's side. All (over 6 million) Model 4" 10's were regulated for the 158 gr @ around 900-950 fps. The +P's about the same. Buffalo Bore sells those loads. I do not like to buy factory. I would like his wife to practice as much as she can with that gun. I want to push them so they still will be going fast enough at 25 yds. to expand reliably. I have the Speer 158gr SWCHP, but never pushed them that fast. Those are available from another source with Gas Checks. Do I need GC's?
