10mm rounds are not bad on weight, as you have seen from your figures. The real issue with the round is the length, requiring a 45 Auto sized frame. Manufacturers are really doing some impressive things with the .40 S&W cartridge these days. 10mm for me is a niche cartridge, I have no need for it other than that it's interesting to load and shoot from my Delta Elite. If I needed a .40 caliber pistol for self defense or some other useful purpose, it would be a .40 S&W, likely a Glock 23.