Where can I buy some Winchester high brass Hulls? 12 Gauge

I'm not sure why you want hi-brass hulls. The make-up of the plastic shell is what's important. As I recall, the only reason Hi-Brass shells are made is because the public thinks they are more potent. Not he case. I've loaded many a "HI-BRASS" load in regular AA casings and have had great success.

P.S......I forgot to say the high-brass/low brass thing is a throw-back to the days of paper casings and the burn-through of a higher(taller) powder charge than a low-base brass could handle.

I wasn't aware of that............Thanks. I'll just load my field loads in the AA Hulls!