I'll try to make this as short and sweet as I can. My grandfather passed down an old 30-30 Marlin that I took a few deer with as a kid. It was grossly inaccurate for me; which I always wrote off to the rifle's age, cheap optics, etc. Once I had the means, I purchased new deer guns and put this one in the safe. Fast forward fifteen years and I like the nostalgia and handiness of having that little lever gun, particularly stalking hogs in the swamp on my hunting property. So I cleaned the barrel up good, had some good sling mounts installed, slapped some decent glass on (Zeiss 3-9), and took her to the range. At fifty yards I was getting groups in excess of 12 inches, not even groups really, all over. I took the scope off and shot irons, then got the most perfect 'keyhole' I have ever witnessed. The muzzle appears to be worn at the crown and almost smooth at spots; likely from years of steel rod muzzle cleaning (not by me) - which I ASSUME is the culprit. I may let the 'smith look at it, but at this point I wonder if it should just go in the safe or throw money at it to make it possibly run - perhaps by counter boring the muzzle to get to some clean rifling, or just buy a new one. Any comments? ----another viable option is I found factory new barrels for $48.