I have used it quite a bit. The 100 grn 243 round is deadly on deer...
Dollar for dollar I think it is some of the best ammo going (bought before the Obama price jump).
My take is that the brass is of a very high quality - great for reloading.
I think velocity is a bit less than some of the USA name brand stuff - at least the 'high end' stuff, but that would be expected - it is generic ammo, not trying to be magnum-like. This observation is based on felt recoil - not chronograph work.
I know the gun shop I used loves it (when prices were pre-Obama). They also felt it was some of the best ammo for the buck going. I have a stockpile of their brass 223 somewhere...
We have noticed some variation between different lot numbers, so if you are after hunting ammo I would suggest you go after 'same lot' boxes. Not enough to not buy the stuff, but forewarned is forearmed.
I sell a lot of it in my shop. No compliants on any of the calibers I have sold. The 22 hornet is about 1/2 the price of any other brand and shoots as well or better. Everyone is happy with the accuracy. The brass is reloadable and its boxer primed. All calibers cost less than most other brands.
My shooting buddy bought some Privi .308 in the blue and white box for his Savage Tactical. I guess it could have been the rifle, but, if he shot it in 90 degree heat, it would blow the primers loose in the brass. Cool weather it was okay.
I bought some of the Privi brass in 7.62X54R to reload for a PSL and the primer pockets were too deep for any of the primers I had. They were noticeably deeper than they should have been with resultant FTFs due to light primer hits. After that, I sprang for some Lapua brand brass, and had no problems (except the cost).
To answer bigbore613 on the Tula.223 steelcase. I have shot quite a bit of it without trouble. $5.27 a box of 20 at Wallyworld. We use it when we are shooting somewhere that brass would be hard to find like in the orchard grass. The steel cases rust away faster that you would expect. We found a few from just last year that were crumbly and nearly gone.
It is pretty cruddy stuff but if you clean your gun after use it is no big deal.
I shot a couple hundred rounds of the 75 gr Prvi Match .223. I did not in any way feel disappointed with function or accuracy on the 200 and 300 yard stages of a National Match course. I shot a couple of 100% targets at 200. I did not seem to hold the 600 yard target as well as Sierra MatchKing bullets in my reloads, but that is probably not a problem unless you are a National Match participant.
The Brass is good quality and holds up well for the 5 times reloading I usually limit for rifle brass. It may not be as good as Federal Gold Medal Match ammo, but it is a good bit cheaper. I would not hesitate to buy more if I needed ammo.