Having watched Matt Dubber's Youtube on the slug liner for FX and him mentioning lubing the slugs for better results, I wondered if anyone had any advice, opinions or discoveries on what is a good lube to try? I have some "WD40 brand specialist silicone spray" and some "DuPont Teflon non stick dry film aerosol" as well, would someone have any input on one of those being a good option or not, before I send them down the barrel and mess something up in there. Rifle is a FX Crown with the 600mm slug liner in .25 for added info. Thanks, Bob.