I've used lots of Wolf in my Mosin-Nagants and .303 Lee-Enfelds with no problems at all. The issue doesn't lie with Wolf's standard power level, but rather the lack of quality control at their factory, which introduces variances in powder charge. In the batch that blew up my friend's FAL, the powder for that one round was way out of kilter. They had a lot of 308 kB's at the time (didn't even ask for PICS of his rifle when he called, just asked him what gunsmith he wanted it sent to). There are similar stories as well... any manufacturer that ships bad ammo that often, loses my trust.    Another source of overpressure is easy to confirm on Wolf. Notice the seal around the bullet? That's a thin bit of lacquer, which is used to keep the bullet attached to the case just a fraction of a second longer, to ensure that more pressure builds up using less gunpowder. That's not a horrible thing in and of itself, but what  is  horrible is what can happen if there's too much of it and it doesn't just increase the pressure by the amount they want it to.    Personally, I just don't mess with Wolf if I can avoid it. I just don't view any of my rifles as expendable enough, particularly if situations were dire enough that I needed to dip into my non-reloaded ammo.     Aren't FALs made with aluminum lower receivers but steel uppers? Steel may weigh a bit more, but one would think it's infinitely preferable for a receiver. I know tests were done with some kind of fancy upper made from aluminum and failed miserably. To be honest, I'm not sure personally.