So many comments, but only 11 votes! 😕
Went ahead pulled and cleaned the barrel. This is a 1:26 TJ's .300 that has seen >2k slugs since last cleaning. I am sharing a few random borescope pics from the process:As it came out of the gun:After a few tight fitting patches soaked in ballistolAfter polishing with Mothers Mag and Aluminum polish.Then a couple of acetone patches to remove all residue, the I applied a liberal swabbing of Trewax. The trewax is drying, will reassemble and do some groups later.