Moriarti Blog

When you're selecting a barrel for your AR-15 5.56/.223 rifle, one of the most crucial decisions you'll need to make is choosing the right twist rate. It might seem like a small detail, but the twist rate of your rifle barrel plays a significant role in how well your rifle performs, particularly in terms of accuracy and bullet stability. Read more

Today’s topic of discussion is What Is The Difference between .223 Wylde and 5.56 NATO AR-15 Barrel. First and for most, let’s get the terminology straight. .223 Wylde IS NOT your regular .223 Remington! I know, both sound very much similar but these are completely different animals. So let’s go into details.5.56 NATO and .223 RemingtonThough they share identical case dimension, they are slightly different and thus, are not the same cartridge. .223 Remington is slightly smaller than you... Read more

I get a lot of questions by clients on difference between 6.5 Grendel Type I and Type II, so I've decided to jot down major points. The difference is in head spacing!The original 6.5 Grendel, and what we now call Type II 6.5 Grendel, was designed to be used with a Grendel bolt, or.136 head spacing.The patent was never released and to avoid any legal litigations, Les Baer Custom had adjusted 6.5 Grendel design of the barrel to make it .125 head spacing. We are now call it Type I Grendel. LBC has ... Read more

Most often then not, I get a question on the twist rate of AR-15 barrels (AR-10 is a completely different animal, and is not addressed here) and which twist should a client select. The answer depends totally on you and what you will be using the rifle for. But let's explore.Common twist rates of AR-15 barrels are: 1 and 7, 1 and 8, 1 and 9. So what's the most optimal? Answer is as always, depending on what bullet grain you prefer to shoot.AR-15 barrels come in different lengths, materials, treat... Read more