I am going to have to build one of these! I shoot a 4 bore rifle quite often with more lead and larger powder charge than one of these. The recoil is tremendous. But it is manageable and not painful. This gun would have less recoil than a 4 bore. I think anyone with with experience shooting the larger modern dangerous game rifles would not have trouble with it. Someone who does not have experience with heavy recoil would be in for quite a surprise.