EGW alignment comp reamer

[ano]

Just got my EGW alignment comp reamer, checked a few of my barrels. WOWIE, so much out of whack on pretty much all barrels/comps, even the ones with way to big holes.

 

Got an issue with weird bullet patterns, allthough I cant really say its hitting, its WAY to close, gonna ream out and try, Ill get back to you. 

 

 

Edited June 16, 2017 by ano

[Nugget]

Did you check any trubor barrels with the integral comp. just curious if the runout is off on those as well.

[Aircooled6racer]

Hello: Tru Bor barrels are straight. If the comp is not bored at the same time and the threads are machined in a different setup they can be not concentric. Another note is that some of those align reamers can actually just follow the hole that is already in the comp. Using a lathe and setting up the barrel to run true is the best way and then boring the comp. Thanks, Eric

[Service Desk]

2 hours ago, Aircooled6racer said:

Hello: Tru Bor barrels are straight. If the comp is not bored at the same time and the threads are machined in a different setup they can be not concentric. Another note is that some of those align reamers can actually just follow the hole that is already in the comp. Using a lathe and setting up the barrel to run true is the best way and then boring the comp. Thanks, Eric

+1. But the reamers are handy to clean-up the comp holes after a few thousand  major rounds. I use one on my Bianchi guns to clean out any lead buildup from coated boolits.