[GNLaFrance]

I have a Precision Small Arms .25 ACP and a Beretta Bobcat .22 LR.

To ensure reliable function, both pistol's user guides recommend ammo that produces the highest pressure within the normal, safe range. What brands do this?

[SSGN_Doc]

I found that a Beretta 21A (Bobcat) ran well on CCI Stingers and Mini-Mags.

[danf_fl]

For the Beretta, almost any .22 with the HV in the label.
Stingers are the exception. They are not designed to be used in .22s that are not cut to the ANSI standards.
http://www.cci-ammunition.com/products/detail.aspx?use=1&loadNo=0050


On the .25, any "off the shelf" should work.