OK. We're talking the .357 Sig vs 10mm. No comparison in my view. The 10mm is a cartridge that can be found in auto's that will crossover to hunters handguns and have a 15rd mag. To compare apples to apples, the 9x25 Dillon is made from a 10mm case (I have the barrel exchange) and is 500fps faster than the .357 Sig. Good luck.