Do go on....Have you tried waxing your shells?
On steel rimmed hulls?If you look back years ago, Federal used to "Seal" their plastic shells with a drop of wax.
Winchester Super X paper shells were sealed with a heavy coating of wax.
Paper shell's were impregnated with wax. The wax water proofed the paper and acted as a
lube for the fiber wads. It also coated the bore/chamber acting as a rust preventive.
A wax coating will help with extraction. I use Johnsons Paste Wax just a light coat.