[SJSAMPLE]

.223 Wylde is a chamber design.
It will accept both .223 and 5.56, which are the same cartridges but the 5.56 is often loaded with a longer, heavier bullet. Wylde eliminates the throat and free-run problem.

[Myrddin]

The reason for posting the .223 Wylde information is to help in selecting a rifle that can fire both 5.56 NATO and .223 Rem equally well. A 1:8 twist is a decent compromise for most of the ammunition on the market. Anderson and Bear Creek offer complete rifles with .223 Wylde chambers with your choice of 1:7, 1:8 or 1:9 twist. EABCO also offers barrels with Wylde chambers with a choice of twist. I build my rifles from parts, so getting exactly what I want is an option.