For the Largo fans, if you need ammunition, these guys have literally tons of the stuff, both corrosive and non-corrosive.
http://www.sillc.com
I have an Astra 400 that can shoot 9mm and .38 acp without any problems.
Some of the American made generic '.38 Super' stuff is pretty mild and is actually .38 acp marked as a Super load on the box and this shoots fine in my Astra but for liability I won't say that it comes in yellow boxes.
If you are a handloader, you can aquire a batch of .38 super brass, preferably brass and not nickle plated, and chuck them in a stationary drill to turn the semi rim down to the case wall and then cut a deeper extractor groove.
Run the drill at about 1200 rpm.
You can use a fine mill file to remove the excess case rim and a triangular or fine round needle file to deepen the extractor groove.
Case length is near identical between the Largo and the ACP/Super cases.
Actually a 9mm Largo is nothing more than a .38acp case that is made rimless like a 9mm Luger case instead of semi-rimmed and a .38 acp is nothing more than a 9mm Bayard with a semi-rimmed case head, but I digress.
Load with a 9mm Luger powder suggestion and use standard 124 grain 9mm bullets.
130 grain 9mm bullets work even better under the same powder charges if you can find them.
These handloads will work fine in 95% of the 9mm Largo pistols in the market. HTH