That’s exactly what I pack whenever I hike....a Ruger Redhawk .44 mag.
“a Ruger Redhawk .44 mag.”
Or a Smith 629 mountain gun.
https://www.budsgunshop.com/catalog/product_info.php/manufacturers_id/31/products_id/26324
But you have to have very strong hands and wrists to be any good with it. 4in barrels have a lot of snap.
I prefer the Smith 586 4inch. It stops all except grizzlies.