http://badlandstactical.org/event/tactical-shotgun-2-day-course/ Finished up the two day course at Badlands Tactical in Grandfield OK. The basic 930 did very well on day 1 after approx. 150+ rounds. Class started at 8am with lecture about safety, legal/personal consequences of defensive firearms use, types of ammunition and general shotgun fundamentals. Over the next day and a half on the range we learned about "zones", combat loading, ready positions, marksmanship fundamentals along with different drills to practice back at home. 100 rounds into day 2 I started experiencing light primer strikes every 2-3 cycles. Within 10 rounds the 930 wasn't striking the primer at all. I'll be calling Mossberg Monday morning. I never shot or cleaned the gun before class. My instructor examined the gun during a thorough cleaning this afternoon and found nothing obviously broken. Same problem after cleaning the gun. I can't say I'm really impressed with the hammer strike strength. I compare it to a striker fired pistol. Any ideas? Outside the primer strike issues I was please with performance. It really liked the Federal Premium Tactical 00. The pattern out to 36 feet was really tight. Mr. Perryman at 2A Shooting Center stippled it for me and it worked out well. Safety: Night training, note the recoil shut off the light.