Don't know alot about such,i have a cork in the end of my barrel to keeps bugs or spiders out,but i don't get to shoot alot either.One thing i did is buy a nipple prick from a feller some time back on the classifieds,not only is it a darn nice looking tool but the sharpest pointy thing i ever seen!I can't remember who it was,they were handmade with twisted metal design.
I drop by here now and then to get an education,Thanks..