What method/scope base, do ya'll recommend for a S&W model 66 .357 with 4" bl? Something inexpensive?
TIA

Check these guys out.
http://www.jackweigand.com/
I have their mount on my mod. 29, along with an Ultra Dot 4 red dot sight I got from them. They've both held up well to several hundred rounds of 320 gr hard cast @ over 1300 fps, & it's a combination that I would definetly choose again for hunting.

I've considered getting one of their mounts for my 4" 686 .357 Mag. Looks very rugged and well built!!

Thanks, Vance! Thats what I was looking for. Less expensive than the B-Square model I've used in the past.

Now, if I remove the rear adjustable sight on my revolver, will the existing screw holes be acceptable to use for the base?

One more thing, I have an old T/C octagon 1x scope. Where can I find Weaver style rings to fit this?

Thanks again!