Assuming it's the same brass that was used in RWS 'NRA Target' ammunition, then it's good quality brass that's fine for modest loads but won't last long if you push it.
I loaded about 7k of it before switching to other brands, but never got beyond 3 or 4 firings of modest loads so I've no idea how long it would have lasted. I fondly recall testing 20 rounds each of 3 different loads in that RWS brass on the International 300m target (1.2 moa bull, with sling & irons) and inadvertently shooting my PB for a 60 shot match. On the other hand, UK 'Match Rifle' shooters (who hurl 215+ grainers from .308s to 1200 yards using cases filled to capacity with RL17) were not fond of RWS brass - I guess due to pockets opening quickly.
I loaded about 7k of it before switching to other brands, but never got beyond 3 or 4 firings of modest loads so I've no idea how long it would have lasted. I fondly recall testing 20 rounds each of 3 different loads in that RWS brass on the International 300m target (1.2 moa bull, with sling & irons) and inadvertently shooting my PB for a 60 shot match. On the other hand, UK 'Match Rifle' shooters (who hurl 215+ grainers from .308s to 1200 yards using cases filled to capacity with RL17) were not fond of RWS brass - I guess due to pockets opening quickly.