"Try putting a empty case in the chamber and if it a lot easier to close you need to get a bronze brush into that chamber area and clean out the lead carbon ring. When I run in a new barrel in I have a procedure that greatly reduces the lead carbon ring problem. Peter Armstrong"
Peter with this procedure are you trying to get the area where the carbon ring forms as smooth as possible so it doesn't form or putting a key in it so the first layer is stable & won't flake off in parts?
I understand if you want to keep this to yourself.
Peter
Peter
All I do is run a bronze brush in and out of the chamber 3 or 4 times every 50 rounds for the first 500 rounds, then the bronze brush at the end of the day for the next 1000/1500 rounds just depends on the barrel. I also use bore paste on a patch to move any carbon buildup in the barrel which can happen with new barrels. There is something similar in the Calfee book.
On new barrels I’ll use a rimfire size bronze brush and start each session with a new brush, when I pull a pull a bronze brush through a barrel I use a 22 centerfire size brush.
A couple of things to think about is there is no solvent available that will remove lead, so the bronze brush is the only way. None of the barrels I’ve won nationals has ever had solvents of any kind in the bore. Carbon and lead love to attach to carbon and lead already in the barrel so if you can stop it building up from day one, once run in they are very easy to keep clean and shooting consistently.
RBA HoF #1 (2007)
I'm also avoiding solvents in this new barrel & haven't used a bronze brush past the chamber.
I clean immediately after shooting so it doesn't get a chance to harden.
Peter