Hi Slap, I am having trouble with my Mark IV. Here is what i posted in another forum
I am not sure if it is a firearm issue or an ammo issue. In the last week I have purchased the following .22lr to see if it is an ammo problem. I havent had a chance to go to the range yet to test them.
Thank you guys for all the suggestions. I went to a shop today and they had Aguila Super extra and I decided to pick up a brick and see if it runs through my Mark IV.
Mike