Although I am currently only a Handi Rimfireaholic, I do remember many conversations on this site, and the old H&R site regarding the accuracy of the Winchester White Box .223 ammo in the Handi. It shoots incredibly well in my CZ 527 American as well. I had bought it when I saw it available, but haven't seen it in ages (for obvious reasons).
I was out yesterday making the rounds of the local Hartford area gun shops (its good relaxation therapy on 'one of those days') and in-between shops I stopped at WalMart. They don't have much in the stores around here anymore, but you never know what you'll find....
Well, to my surprise I found 2 - 40 round boxes of WWB in .223!! It may not seem like a big deal, but it made my day a little better.
Of course, the last boxes I bought cost me around $14.99/50 rounds, and these boxes were $23.97 ea. for 40 rounds!! But that's the way things are currently.