Quote Originally Posted by edlmann View Post
I can't imagine a blind hole in the side of the rear bridge of an '03 action having much more than one thread of contact - you'd want all the contact area you could get in any case. Come to think of it, I don't think I've ever seen a blind hole for a receiver-mounted aperture sight.

I've never examined an '03 with a Lyman installed so I was not sure. My frame of reference is Rem 40X and Rem 37 smallbores. Those have blind mounting holes but the receiver walls are probably thicker than the '03.

Regards

Jim