You can load 9x23 safely to much higher velocities than Winchester is loading their cartridges to. 10mm doesn't even compare to 9x23 because there are no SAAMI specs for 9x23. If you could load up a 10mm auto cartridge in such a manner that the fpe exceeded 738 at the muzzle you would just be matching the penetration of the stock Winchester 124g 9x23 winchester load. It's as simple as the fpe/impact area ratio. Physics calculations support my statement that 9x23 winchester will out penetrate 10mm auto rounds. There are lots of advantages to this cartridge that hardly anyone THINKS to ask the question about. My personal interest in the cartridge is from a practical standpoint.Which gun can I hunt small game without leaving a giant hole and yet have enough energy for which to hunt larger game with as well as using it for defense purposes.ĩx23 winchester cases are solid enough to be reloaded multiple times. Loaded down, there is no advantage to the round at all.ĩx23 Winchester will have better penetration than the 10mm will - this may be undesired in a urban self defense scenario where bullets can continue to travel through the target, but sometimes penetration is a positive thing.ĩx23 Winchester is small diameter than 10mm allowing for more cartridge capacity than 10mm in the same length magazine. It also has reportedly larger muzzle blast/flash than other common auto cartridges. The 10mm magnum has quite a bit more recoil if loaded as originally designed than other common auto cartridges. It also holds the crown of being the best defense cartridge tested by man. 357 magnum - which is probably the most versatile handgun round. The 9x23 Winchester is the closest thing in an auto round to the. 357S are less capable energy wise than the 9x23W. 38 super are capable of producing 9x23 winchester energies out of the same guns.

9mm win mag load data