barrel life of AR
- Thread starter recon
- Start date
Regular barrels and 'pencil' barrels will tend to be less accurate than a HBar type barrel, plus, they will heat at a much faster rate than their HBar counterpart, since there is less metal to transfer heat to. So aside weight reduction, there is no real benefit of having the regular barrel over the HBar, except for the cost, or if you want to attach a M203 someday.
Chome lined barrels add a longer life to the barrel as well as ease of cleaning. As for how many rounds approx. I'm not too sure. Other benefits include ability to mount an M203. Hmm, wait, scratch that......not likely to happen......
Hmm, someone else will have some other pros and cons to it.
Hmm, someone else will have some other pros and cons to it.
PoFF said:
But if the barrel has less material and heats up faster, than wouldn't it cool down faster by not retaining the heat?
What does a thin barrel have to do with accuracy? I think the barrel will deform after heating up but accuracy shouldnt be affected with the first few mags. I guess it depends on the type of shooting you do.
I dont think you can shoot it enough to worry about the barrel from wearing out. especially in Canada.
Less weight is sometimes more advantageous and M4 feed ramps feed more reliably, you can attach a bayonet easier and the M4 is easily maneuvered in close quarters also the attachment of the M203. Go here: http://www.ar15.com/content/articles/idealRifle/
Disagvantages: less effective range than longer barrels, slightly less accuracy than HB bbls of equal length, more muzzle climb than HB bbls of equal length.
Disagvantages: less effective range than longer barrels, slightly less accuracy than HB bbls of equal length, more muzzle climb than HB bbls of equal length.
t6chan said:
More consistent temps mean more consistent groups, rapid heating and cooling usually means more POI shift in bullet groupings.
Heavier bbls (properly profiled) usually have better bbl harmonics resulting in less bbl whip increasing potential accuracy.
An AR15 barrel, cromed or not, will last you a lifetime (cromed, 2 lifetimes :lol: ) if you take care of it. Mabey in a custom bench rest match $$$ barrel, heavy profile will make a difference in accuracy, but in a production AR15 barrel you won't see any measurable difference between gov. profile and heavy. I find any HBAR over 10 inchs balances poorly, with the 14.5 M4 profile about the best as it gets with the AR.
NavyShooter
CGN Ultra frequent flyer
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My experience with AR Barrel life:
Between 12,000 and 15,000 rounds, the accuracy degraded from 1.25" to 4.5"
This was with a hammer forged, chrome lined barrel, with an unknown service use and round count prior to me getting issued it.
It is unlikely that you'll fire more than 12,000 rounds from an AR unless you're pretty serious about using it....
For me, that was 3-4 years of shooting.
NS
Between 12,000 and 15,000 rounds, the accuracy degraded from 1.25" to 4.5"
This was with a hammer forged, chrome lined barrel, with an unknown service use and round count prior to me getting issued it.
It is unlikely that you'll fire more than 12,000 rounds from an AR unless you're pretty serious about using it....
For me, that was 3-4 years of shooting.
NS
P0WERWAGON
CGN Ultra frequent flyer
- Location
- burnaby BC كافر
isn't the US military spec that it must hold a certain MOA for 15 000 rounds?
