Got the rifle and mounted the scope; then removed the factory forearm and pondered what a replacement with a wider-longer front end would look like: BAD. So...I replaced the forearm and mounted Uncle Mike's sling-swivel right at the loading port on the mag tube, then put on a nice wide sling. Bingo! a suitable place to rest onto the bench-bags. Keeps the nice lines of the carbine, too.
The Henry stock "Monte Carlo" comb is too short for me and my scope (won't allow cheek weld), so I needed to make up a 1/2" foam riser which wraps on with some velcro-sticky fabric; this will get a nicer-looking leather wrap after I re-stock my leather supply. Or maybe a nicely-carved black walnut piece to glue on to the stock?
Next job is to zero the scope and see how it groups.