Hey, Thanks Sakoluvr!
I bought a nice, unmolested 336 made in 1967 just before Christmas that was missing its bullseye. I ordered one from Brownell's thinking I would just pop it in. Well it came this afternoon and I was looking at it wondering exactly how I was going to get it in and make it look right. I looked online for ideas and found your thread. I did it pretty much the same way you did and it looks great!
I tapped the bullseye in with a hammer without having to sand the diameter. It is a tight fit and makes you wonder how the heck one could ever get out in the first place! I put a little glue in with it as you did. Then, I taped up with blue tape, and cut it off close (almost too close) with a hacksaw blade and sanded it down nice and flush! I used a small eraser to back my sandpaper.
Thanks again.....it sure helped me out!
