Which Ammo or Chamber Should I Buy?
It’s a good idea to have an understanding of all of the factors regarding this issue – and what you will use the rifle for – and make a purchase based on this knowledge. With that in mind, here are my thoughts on the four chamberings I’ve discussed in this article.
.223 Remington – Because it’s the only SAAMI standardized cartridge, it’s the only one you’re likely to find used in rifles produced by major manufacturers. I would prefer any of the other three to “regular .223.” However, you will not be at a huge disadvantage as long as you buy mostly .223 ammo. As stated above, you are not likely to encounter major problems with limited amounts of 5.56 in a .223 rifle fired out of necessity or in an emergency. Doing so at a high volume for the long term is probably not a good idea. In terms of a carbine-style AR-15, I see absolutely no reason to purchase one with a .223 Remington chamber.
.223 Wylde – Produced by a variety of smaller manufacturers, .223 Wylde can be an excellent choice if it is executed properly. I have personally had overpressure issues with improperly reamed .223 Wylde chambers. I’ve also had excellent accuracy and no pressure signs with 5.56 from properly reamed .223 Wylde chambers. As always, buying a quality product is often the best way to go.
5.56mm Noveske Match Mod 0 – Similar in concept to .223 Wylde in that it attempts to strike a balance between pressure and accuracy, it has the advantage of being produced only by Noveske, a shop known for precision and attention to detail. All of the Noveske barrels I’ve owned – about a dozen – have delivered accuracy, precision, and safe, reliable function. This comes at a price, for Noveske barrels are not cheap.
5.56mm NATO – The best bet for those looking to shoot high volumes of 5.56mm ammunition without an emphasis on tack-driving accuracy or precision, 5.56 barrels from reliable machine shops will outshoot most humans while also keeping pressures within normal limits. Cheap 5.56 barrels often disappoint.
Summary: Buy a well-made rifle with the chamber you want based on your needs, shoot the right ammo in it, and have fun. For most people, especially those not sure of what type of shooting they’ll be doing, a 5.56mm chamber is the best all-around choice. It is my fervent hope that this article has helped you better understand the topic at hand.