I have a Franchi Instinct SL, 20ga that I use for pheasant. It's light weight for the field and fits great. One of my favorite s guns. And it gets birds.
My brother used to drag race his GTO on the weekends and daily driver during the week. Before the race at the drag strip he'd change spark plugs. One time and never again, he applied a small amount of silver anti size on the plug thread's. Only to about not get them out the next week. As it looked, the heat turned the aluminum in it, to fuse the plug in almost permantly.
I have used a dab of Bore Butter on nipples and just snugged them in and it worked fine
H&R Buffalo Classic, 45-70, 32" bbl
Excellent condition, safe queen rifle.
New in 2004 and only fired a few times.
$750 ... payment, US Postal money order, Includes insured shipping to your FFL. In lower 48 states.