[BILLY D.]

fabs

if you are using or plan to that pistol for protection of your wife and yourself i would be very concerned.

first thing i would do is a judicious, no pun intended, cleaning with special care of the extractor, ejector or whatever the krauts call the darned thing.

next to check is to insure there is not a gunk buildup in the moving parts of the gun. the less oil and grease you use on guns the better. i'm talking about the slide assembly specificallly here. gunk causes the slide to drag slowing the slide while it is trying to go back into battery. that causes stove pipe jams which is what you are experienceing.

next check the extractor thigmawidget and make sure it's all there first and then insure it's not burred or worn. you could also have a worn recoil spring or one that is weak. casing roolover is when the slide starts back and the casing doesn't get pulled away from the extractor, the slide goes toward battery position and the casing is not thrown clear of the ejection port.

i'm no authority on h&k's but these are things that cover most semi autos. i can take a 1911 apart in the dark and put it back together. i've never had occasion to work on a h&k.

hope some of this helps. goooooood luck.

oops forgot. it could be partially the fault of the ammo also. although i have used fiocchi shotgun ammo and it performed great.