worrying about the effect of aerodynamics on the acceleration of a minivan. This is GOOD!
worrying about the effect of aerodynamics on the acceleration of a minivan. This is GOOD!
But if your minivan has AWD, decent aerodynamics, and a good engine, it can still get moving faster than an average sedan.
Just saying. I like our Sienna.
The bolt is not held square to the chamber? FALSE
The locking faces of the lugs on the extension, and the front face are held square to the threads.
The bore of the barrel is held square to the thread buttress.
So, when the barrel extension is threaded on to the barrel the locking faces of the lugs are square the bore and chamber axis.
The rear faces of the bolt's locking lugs are held square to the breech face.
The breech face is perpendicular to the chamber and bore to within 0.0005".
Also, the upper is square enough to the barrel, per print, and the carrier has enough clearance, to keep allow the bolt to go square to the barrel without interference from the upper.
So, explain fluted barrels, that have been used from the very beginnings of the AR-10/AR-15? If it were only about soaking up heat in a massive body, flutes would be pointless.
Or, the USMC specifically requesting the M16A2 have the "HBAR" barrel, due to its better rigidity.
Last edited by lysander; 12-14-22 at 08:21.
An AR can absolutely be a precision rifle. Do you read Molon’s posts?
RLTW
Former Action Guy
Disclosure: I am affiliated PRN with a tactical training center, but I speak only for myself. I have no idea what we sell, other than CLP and training. I receive no income from sale of hard goods.
Flutes theoretically increase surface area and dissipate heat faster. The AR's bolt tilts slightly when under pressure. The military says and does stupid stuff all the time. They also thought the M16A1's barrels were bending so...
But we're getting way off track here. What I want to know specifically is if there's some magic in the carbon composites used with barrels that enables them to conduct heat, or if it's as I suspect and they're just insulating the barrel and making the whole situation worse.
Does carbon fiber wrap resist bending caused by heat better than barrel steel? If so, is it a lighter method of keeping the barrel straight?
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