On the range, so do some of the experienced.
Here's my take on it, YMMV
Given that it may be the only ammo available in a situation, it behooves everyone with an AR platform rifle to at the very least see if it functions in their rifle. To not do so is to not know your rifle.
If you might someday depend on that rifle to save your ass, you ought to at least know what it can and cannot use for ammo.
Personally I do not own, nor would I keep a rifle that would not digest Wolf ammo.
As for the wear/breakage myth, I've yet to break an extractor or any other part in a rifle using Wolf ammo. Matter of fact, the only extractor I've ever broken in an AR while on the range was using Sellior&Bellot brass cased 62gr green tip.
Also, keep in mind, that extractors are a dynamic part in a rifle and are subjected to harsh forces that other parts are not. They have a finite lifespan and should be changed regularly....they are cheap and easy to replace. Anyone with an AR should have two or three per gun on hand always.
I've been using Wolf ammo in several calibers since it first hit our shores and have probably saved enough in ammo costs to purchase a few ARs.
I have never, thats right NEVER, had a failure to fire in a Wolf cartridge of any caliber. There isn't any other ammo brand I can make that claim of.
Its not match ammo and you won't get "match results"....you also won't get that "match ammo dent" in your wallet.
Dirty....yes.....rifles were meant to be cleaned during and after firing, get over it. I'll never understand the mindset of people who insist on having a sterile gun after firing a few hundred rounds....it doesn't work that way.
For range ammo, I think Wolf is the best bang for the buck.