I was plinking at the range with my Yugo after the Steel Challenge match. I had bought one of these a year or two ago that was unissued with all matching numbers. I have resisted making it into a bubba. The only mods so far are to replace (extend) the butt plate and put in the firing pin with spring assembly to remove the slam fire possibility.
I have noted some differences since changing the firing pin. The Wolf Military Classic ammo is no longer reliable. There is a FTF about every 8 rounds or so. The primer is dented but no bang. I wait a while, eject it, reload it and it goes bang the next time. I expect that these primer are a little hard and the strike has been weakened by the new setup.
It seems to shoot the other ammo I have just fine. I will have to count and see how much of the Wolf I have left and sell it off. Aside from all that, it is fun to shoot. It is as described by others - minute of mule deer at 100 yards.