We'll tell you whatever you want to know. First you have to tell us what you want. What kind of gun. What loads are you looking for? Are you using it in Competition or protection? Do you want to shoot factory stuff or higher...or lower. The 9x23 is probably one of the most versitile cartridges ever developed for the 1911. It's all I shoot anymore and I can't get enough of them. I use it exclusively in IDPA ESP, I carry acommanding officer model I made, and I keep each set-up for different loads. It is one of the most accurate calibers I've seen. Just ask.