[sasmalta]

What grain size ammo is reccomended to use with MP 9 :?:

Thanks.

 

[m4arc]

You can run anything from 115gr to 147gr.



You can also run +P ammo for defensive loads as well.

 

[ToddG]

For practice, I've found that 115gr CCI Blazer (aluminum) runs exceptionally well and is very accurate. I shot about a 5" 10-shot group at 50yd yesterday. Monday I'm ordering another 20,000 rounds of it.



There is a pretty detailed ongoing discussion in the Ammo Bunker section about choosing defensive ammo.