I took my new CT380 to the range today. I shot 100 rounds of Fiochi 95gr fmj with failure to go into battery at least 3 or 4 times each magazine. I wasn't too concerned because I figured it was a break in issue. The slide usually stopped just short of battery and a tap on the back put it into battery. I switched to Fiochi 90gr XTP hollow points and the strangest thing happened. I shot 4 magazines with not 1 malfunction. I'm wondering if this is an ammo issue rather than a break in issue. I guess I'll try some other ammo to find out.