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+--- Thread: barrel swell (/showthread.php?tid=5017)
barrel swell - 500 - 02-27-2013
When a barrel is threaded it can make the muzzle swell because it is thinner in the threaded portion causing the barrel to be less accurate. Is swell minimized when a muzzle device is attached?
barrel swell - ricsmall - 02-27-2013
Never heard of this, interesting though. If its true, I would think having a muzzle device attached would mitigate the effect. Who told you this?
barrel swell - Sojorboy - 02-27-2013
Just thought I would share this from a post I found on ar15.com as it is subject related
Most AR15 5.56 barrels are swelled at the muzzle, relieving the metal down for a 1/2-28 thread allow the muzzle to open up so short 55gr fMJs come out wobbling. I purchased 6-7 different companies barrels this last summer to compare with inspection pins, most muzzles would allow a .219 pin to go into the muzzle apx 3/4" then stop. Another thing is one barrel manufacturer has crooked chambers, every stainless barrel I have seen from them(6 this year) has a crooked chamber and throat and can easily be seen with a borescope.
BCMs 410 stainless barrels are made by Krieger/Criterion and they are right as are most of the more custom stainless barrels from WOA, Noveske, Compass Lake etc. the CHF barrels I had both had bad crowns, one was to replace the other one that had a bad crown so I assume the whole batch did and they were not inspected.
The Colts I have had over the years are done right, with the extra steps needed to keep the muzzle swell to a minimum. We pay for the extra steps needed to control the muzzle swell.
barrel swell - cory - 02-27-2013
Sojorboy Wrote:Another thing is one barrel manufacturer has crooked chambers, every stainless barrel I have seen from them(6 this year) has a crooked chamber and throat and can easily be seen with a borescope.
Which Manufacturer would that be???
barrel swell - Sojorboy - 02-27-2013
Cory , I don't know who the writer is referring to. The same question was asked by another member on the other forum but was never answered. It was something I copied and saved to my notes while researching barrels for a current build. Ill see if I can find the link to the post and add it here.
Sorry it wasn't ar.com it was snipershide
Here's the link
[url]http://www.snipershide.com/forum/ubbthreads.php?
ubb=showflat&Number=2249786[/url]
Sorry this link doesn't work New link added two post down
barrel swell - babaganoush - 02-27-2013
Sorry, sojorboy, but the link seems to go nowhere on the snipers hide...
barrel swell - Sojorboy - 02-27-2013
Babganoush, they changed the forum format since I copied the link a few months ago. I wasn't aware that an older link did not work. I'll try and find the thread on the new forum and repost. Sorry everyone
Try this http://forum.snipershide.com/showthread.php?t=70446&highlight=Good+ar15+barrel+money