Just like the miss-naming of a magazine as a "clip," I'm under the impression that the twist rate correlated more to bullet length rather than bullet weight. Of course, in most cases a longer bullet weighs more, but bottom line, shoot your barrel and see what it likes.
I had no idea that there was a such a thing as a threaded forward assist, that screws together... Until it backed out and came flying off of my bca upper this morning! Thanks guys! Smh.
I have your 20" 556 upper with a heavy barrel 1:7 twist. The most accurate rounds I have put through it are 40gr ballistic tip Fiocchi. And anything heavier than 55gr is not accurate through that upper. No complaints here, just an observation
I stopped worrying about twist years ago when I bought a couple of your fast twist 243 uppers. I didn’t buy one for years because in my opinion from reading on too many forums, the faster twist won’t lighter projectiles. Both my uppers will shoot way under half MOA with hand loads in both 55 and 60 green offerings push super fast. IMO if you handload, you can just about make any bullet work, no matter how light or heavy, and how fast or slow your twist is. If you’re stuck to buying factory ammunition, that’s a whole different game. You find out real quickly, and form an opinion, on one mass produced poorly loaded ammunition.
I run a 16" inch 5.56 1-8 twist carbine gas system, but I need to switch to a 16" 223 Wylde 1-8 twist with a mid length adjustable gas system with a left side charge RT eject. and I would like that to be a BCA, do you all have one ready for me?
Since 55 gr and 62 gr are cheaper, by far, and in a much more abundant supply than heavier projectiles, why not sell most of your barrels and uppers to reflect this fact? Your customers are not buying large amounts of heavier bullets. Please make the switch.
Test it. Most have the 1:7 twist, but my 10.5" has shot everything from 55 grain up to 77 grain ammo just fine and stay within 2 moa. Just keep in mind the velocity loss so the range for effectiveness is limited, this is where the heavier otm loads tend to do better.
Doesn't the 1:16 fall short for the sub sonic rounds though? I'm seeing guys with custom barrels using the 1:10 for the 350 subsonic loads and it appears to be very accurate.