My experience with Wolf has been very inconsistent. Some lots shoot great, some not so great. Their bullets are the rolled crimped type base, many with lead smears across the bottom. Their HP's are a gimmick, and not a true match HP, which has a jacketed base, hence the reason for the HP. The HP is also not a hunting HP. I've had more misfires with Wolf than any other brand.
The most consistent and accurate Russian ammo I've used has been Barnaul. Their SP's have a flat, jacketed base and shoot very well.
I have AK's that cover the spectrum price wise. All will shoot better than many people seem to think they should, especially from a field position. Then again, its been my experience that "most" shoot off a bench, at a target that has an aiming point, and consider themselves "rifle shooters". Many seem to think that 6" is a good AK group at 100 yards. Most AK's will do half that if you can do your part, especially with a good lot of ammo.
The problem generally isnt the gun. While AK's are not target rifles, they can acquit themselves well in the hands of someone who can shoot.
Is this the same guy that shoots 3" groups at 100m offhand with his AK?
I've shot groups of this size offhand at that range with an AK, and more than just a few times. All my AK's can easily make consistent head shots on an IPSC target (6"x6") fired this way at 100 yards, open sights or red dot. If yours cant, then maybe its not the rifle.