Yes.
The wylde chamber will take any 223 or 5.56 ammo.
If you are interested in top accuracy and preserving accuracy another question is what kind of ammo you want to shoot from a match barrel
but not because of over-pressure concerns but because of the cheap powders and bullets from surplus and some steel ammo.
Keep in mind some steel cased FMJs had bullets with a lot harder bullets and this has proven to reduce life over time unless is just
for occasional use. I don't shoot garbage from a match barrel unless there is an emergency that never really happens.
Also just fyi...there is no final resolution that says a 5.56 cannot be fired on a 223 chamber. The first thing would be to know what reamer
your chamber was made with and the actual dimensions of the given 223 chamber. There is a substantial nr. of reamer variations I know of
you can cut a 223 chamber with that are totally ok with 5.56. Many 223 commercial chambers are reamed with extra tolerances to avoid problems,
and potential liabilities so it is a good idea to ask the manufacturer.
But with the wylde you get a chamber that is closer to 223 but with extra freebore so it is ok with 5.56 and potentially more accurate
although there are other factors very important too like having the bolt matched to the barrel when headspacing to shoot match
ammo through it. As you know bolts dimensions change slightly so this is a good practice to increase the accuracy potential
of the barrel and rifle. Some custom shops that do match barrels will ask you if you want the bolt matched to the barrel during
headspacing. Never buy a carbine ported barrel. mid lenght ok, rifle is best from 18" and further. Never buy a barrel with 1/2" threads in the muzzle. 5/8 is ok.
A good bore is also key so spend a bit extra in a quality barrel like Krieger, Lothar Walter, Bartlein, etc... this truing the receiver,
you know... the whole accuracy tango. Or buy a lesbaer, white oak, etc... upper and be done.
I guess it depends on what your expectations are and if you want to compete with it and be competitive. ARs are capable of
amazing accuracy.
BTW the black hills MK262 copy awesome round. Also try the new 77gr TMK possibly the best round to date. Another
good one is the Double tap 80gr Amax. I have to try the new hornady ELDs. Didn't get a chance yet.
Good luck and sorry for the long explanation. I hope those small tips will help you.