Build one gun and stick to it. Sorting the brass is a major pain in the butt. If you want a 38 super in a rimless design, go with the 38TJ or 38 super comp. For my money I would go with the 9x23 and just shoot 9x23 win or 9mm supercomp from starline. It's obvious that the major manufacturers don't give you alot to choose from so I make my own. That why availability isn't a factor to me.