Check your owner manual, if you do not have one try calling the factory, or see if they have a web site. if they do,maybe you can download a copy of the manual.
I have a nickel plated Bursa Thunder 380
and have shot corbon and hydra shock's through it with no problum.
Before I bought it I checked and made sure It would take +p and +p+ ammo and was told yes.
I have over 1200 rounds through it and no problums.
It is my wife's carry gun. Also a very accurate gun.
The Thunder9 should be ok - i think Bersa (the manufacturer in Argentina) is at
benso@bersa-sa.com.ar
Though the US rep (must be in your manual, or from your dealer) could have more accurate information.
