I've read about that Bullseye. Definitely looks neat, and Marbles generally makes good stuff, though I wonder if it might not be too large of an 'aperture' to give good, consistent accuracy
I know it's designed more for the youth market, and might not be as refined as I'd like; I would have to see one though to confirm that. I've also been eying Tim Skinner's sights for a while, and this one in particular has me interested:
http://www.skinnersights.com/barrel_mount_6.html I'd hate to have to do any filing on the gun though, so I may just leave well enough alone for now; the Model 68 I have has a pretty good, target-style, peep sight setup on it, so I'll probably use that as my main 'shooter' so to speak. Only time will tell I guess
BTW, that's some nice work on that scope mount; did you drill and tap the barrel for it?
Kind Regards,
~.450 Marlin~