I’ve been doing some more thinking on it. Can’t find that article, the internet seems to be covered up in “pistol vs rifle” and “atf rules” anytime you look for anything regarding ARs and barrel lengths.
But I was thinking, when your barrel gets longer, harmonics become even more of an issue. This is countered by heavier and heavier contour barrels. The more barrel “whip” they harder it is to match up your harmonic nodes with the projectile leaving the muzzle, thus affecting repeatability/consistency. Also, the longer the barrel, the more opportunities there are for the barrel to not be “perfect”. The only way I know how to describe this is through my buddies experience in aerospace CNC. When building bigger planes, there’s much tighter tolerances. Even when machining parts to tens of thousandths, let’s say a Boeing 747 can be as much as a few feet longer than the next. With a smaller airplane such as a piper cub, this difference is much less noticeable, even with the lesser tolerances, thus having less effect on its performance. That’s at least the situation he described to me. I don’t know if that is accurate or not.
Interesting, I’ve worked on the same 148 foot wide 707 for 32 years but have yet to actually measure it, lol.
I will do some reading and I appreciate all the info that is shared, I don’t know if I will ever actually build another AR but it’s always fun to dream.
I will do some reading and I appreciate all the info that is shared, I don’t know if I will ever actually build another AR but it’s always fun to dream.
Good post. Shorter barrels are often (never say always and never say never) the most accurate. Proper twist for the bullet, chamber, and good ammo are very important.
