I've got a 16" dissy (spikes build) .556 barrel I shoot both .223/.556 out of it and it shoots very good. Only issue I had with it was she wanted to be soaking wet and would jam up after 90-120 rounds. I put one of those ares arms slick bcg in it and haven't had an issue with it since.
I don't know much about 223 wylde, just thought maybe that input would help