OK, here is the quandry. I currently own an AR-15 clone with a 1:9 twist. I have ammo that shoots well from the gun and it is very accurate.
I want a .223 bbl for my T/C Encore, however the factory twist rate in their bbl is 1:12.
I can get the .223 bbl in any length I choose, but with that twist rate what is the best length bbl for this caliber with this twist rate.
Please feel free to make bullet weight suggestions with your answer.

To me this is just very perplexing because a 14.5 in bbl in my AR will easily group 5 shots in under 3/4 inch with a 1:9 twist shooting 55-62gr bullets, however the T/C bbl guarentees that their bbls will shoot M.O.A. also. Now they don't specify what length of bbl what weight bullet, it is just a blanket guarentee<probably done more for marketing>but I have found it to be true with the other bbls that I own.
Thanks to all.