Ammo for 9mm Shooter? What brand do you use?

[Luke]

I am building a 1937 S/42 shooter with Wolff springs, standard tension, and plan to shoot this one a lot.


Have read on the Luger Forum that ammo type is important to proper operation of the blowback toggle system. I would like to know which ammo others have used with good success rates.


Cost is not a great consideration, as I would prefer good, safe performance to lower cost.


Thanks for your help.

Luke