I faced the same issue when I hiked the Appalachian and other Trails. I have several S&W "N" frames (44 Mag), too heavy when packing a heavy pack. I found a used S&W Model 64 ("K" frame, 38 Special, +P rated) with a 4" barrel. I carry it in a large fanny pack and load it with Buffalo Bore 38 Special 158 gr. "Ourdoorsman" loads.

With about 475 ft. pounds of muzzle energy, it works well for eastern hiking and kayaking. It is enough for black bear and two legged varmints and, the Model 64 is light and easily to carry.

Buffalo Bore website: https://www.buffalobore.com/index.php?l=product_detail&p=291