 and have that kind of energy. There is a cartridge out there called the 450 SMC, available from Double Tap Ammo. And basically what Mike did was increase the pressure. It's still safe, but considering more pressure, because of course the 45 ACP is a low pressure round, and you don't have to change a thing in your gun. If you want to just get a box of ammo and try it in it, you could do that. Just go to Double Tap Ammo, and you can buy a box. They'll send it to you.