Not sure how to describe this, so please bear with me:
Awhile back I purchased this toll from Sinclair:
http://www.sinclairintl.com/reloadin...prod32925.aspx
I discovered that my Shilling barrel in .223 Wylde has excessive length over published trim data. Even without trimming my Hornady brass, I have .020" extra chamber length.
I didn't figure where I can do anything about it.
Last week I decided to try a new bullet (80gr A-Max vs. 80gr Berger VLD) When I used the comparator to get length to the lands, I consistently had to push the bullet through a tight spot to hit the lands. This was very consistent. I think I may have a carbon build up in that extra .020" space between the end of the case & the end of the chamber.
I tried vigorous cleaning to no avail. I think I've heard of this as a "ghost ring", but searches only turn up stuff about sights.
So if I've explained this correctly, could a build up of junk have occurred in this space and how can I get rid of it???
Thanks for any advice.
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