Simple solution! Shoot left handed. Only kidding, few people can switch like that. Unless you are one of the 1.5% of the people that don't have a dominate eye, and are truly ambidextrous. My recommendation get the light loads for the trapdoor 45-70, I think you could handle them. Otherwise get a brake (I hate those things), and remember never, never, never shoot it without hearing protection. A good friend of mine was a helicopter pilot, he went on a hunt with a friend and broke his gun. He borrowed a gun to shoot his sheep, it had a brake. He did not put on ear protection first, and now he can no longer fly choppers. In other words he lost his job over it. My neighbor bought a new .338 Ultra Mag. First thing he did was have a brake put on it. I took him hunting and watched him shoot a Moose without putting on his ear protection. Now he has to wear hearing aids to join a conversation, and he only fired the gun once.