Gents, be it LLA or stick lube, I find it deposits just a kiss in my barrel chamber
(I use 1911 barrel off my pistol as a case gauge on all reloads made) when I test loads in the PLONK test.
After a while, like 30 bullets tested, I see they are running into lube deposits in the chamber of barrel and its got to be taken out.
I happened on to a great tool for this purpose: My M3A1 M1 Rifle cleaning tool with its brass brush. One twist of that brush using this tool and chamber is cleared of lube deposits.
If you got to clean a 9mm, 45acp chamber ( or case gauge) of lube deposits, and you got the Garand tool, give it a try .