I use there ammunition all the time.... Its priced right, performs well and is decently accurate......
Yes some of these Previ stuff is a little on the inexpensive side but don't let that fool you.... Its great ammunition.... I tried a couple of boxes of there brass cased rifle ammo and like it so much I ordered 10000 rounds of it 3 years ago..... With the price of ammo and its quality it is one of the better investments I have made.......
I've used a lot of PRVI ammo. I like it for the price, it's not the cleanest burning ammo, Like the doc said, they make wolf gold ammo for them, and thats dirty ammo too, not as dirty as steel cased wolf, but not as clean as winchester, remington, etc.
If all you're looking for is some blastin' ammo, PRVI fits the bill.
PRVI makes "milspec" grade ammo in military calibers, I have 3 cases of PRVI M193 5.56x45, it's every bit as good as Lake City.