9x18 ultra
Finally got a box of 9x18 ultra and shot my Walther PP Super . Man,blows a .380 away . excellent penetration, powerfull,as far as shooting 380's in a gun chambered for a 9x18 Ultra ,No If it isn't made for it don't do it . Would you shoot a 7mm Remington in a Jap 7 mm. No