I have osteoarthritis in both shoulders necessitating a low-recoiling rifle, so I understand what MtnMan is talking about. OTOH, I don't want to carry a heavy rifle weighing more than 7 pounds, for the exact same reasons, the osteoarthritis. I prefer to be on the ground moving, as opposed to stationary in a blind, so the all-up weight of the rifle is important.
I have settled on a .45 caliber flintlock, what I first started with back in 1971, at age 17. If I lived where MtnMan did, and needed to hunt elk, then I would have to rethink my caliber choice, move up to a short-barreled, .58 caliber flintlock, and install a Kick-eez Magnum recoil pad on the buttstock. I would do this regardless of how it looked, because I live in the present, the technology would allow me to shoot a .58 (to include the necessary practice), and I love flintlocks.
Living in the past, to the point where I stop shooting and hunting because I don't want to combine 18th Century & 21st Century technology, seems a bit absurd to me. So, I will combine a modern 4140CM steel barrel with a CNC Jim Kibler lock, basic walnut stock, recoil pad, sling swivel bases, and a modern sling.