200 yards is not long range where I shoot. Anyway, I have 4 of the Burris 10X - 2 old model and 2 new model. The old model is a little more forgiving on the eye relief, but they are longer than the new model and don't have target knobs. Hendog, I have a 10X NM on a custom XP-100 223 and its a match made in heaven in the digger fields - you'll like the 10X on your 223. Personally, I love the 10X on any of my long range pistolas better than any other scope. IMO Burris still has the best handgun scopes (and I have a lot of them) - I think their 2-7 AO is the best all-around handgun scope you can buy (have 6 of just these). None of my half dozen handcannons wearing Burris (3 JDJ's, 2 Super Bowers and a 454 Casull) seem to be able to shake them loose inside either. Now if their rifle scopes just weren't so butt ugly! (I shoot Leupold and Nikon on the long tubes).
I also use (now don't choke) a half dozen of the long discontinued Tasco Pro Class 30mm jobs on some of my hand boomers, and they are tuff as nails too. So are the Simmons Gold Medal Handgun scopes I have - also discontinued.
Rambled long enough on this one.... enjoy that C-223 - it should be a shooter for you.