Due to the run on ammunition, it has become harder to find brass case ammo in .45 ACP. I have a Kahr Arms/Auto Ordnance copy of the 1927A1. It is the steel receiver model. I understand that brass cased ammo would be best for this weapon but was wondering of the function and wear factors involved in using steel or aluminum cased ammo. This weapon is not a weekend plinker and will only see duty as necessary. Any thoughts will be greatly appreciated.