We have found the latest Norma brass to be ok and usable. Nothing before that though. But, that being said, I still use nothing but Winchester 22-250 brass and I am still using the original batch I bought when I started shooting the 6XC. I started with 5,000 pcs and all but about 500 have been fired at least once, most have been fired multiple times and have I have some that I test with that have over 20 firings on them, and I have a batch I just shot a reduced course match yesterday with that was on its 13th firing and I dropped 3 pts, all off the shoulder, cleaned the rest of the course. This was also on a bbl with almost 3,000 rounds on it.
I see no reason to switch brass,oh, and its a lot cheaper too!), switch bbls,a $250 Wilson on a T2k), or switch bullets, my favorite short distance bullet, the 80gr Berger FB.
I do run full power loads out of the Win brass and do expect it to hold up, which is does. Every once in a blue moon do I have to throw away brass due to primer pocket and its with loads that we havent been able to run using the orginal brass, or even the latest stuff. I am going out back today to test some Berger 115s at 3100fps or more. I wont do that with the Norma brass, but with the Winchester, I can, and do.
But, ultimately, you have to choose whats going to work in your rifle, your budget, your game. Try both, thats the easy solution.
John