If you are looking for a large bore rifle dont get something cheap! I have recently experienced a dakota african grade rifle chambered in 416 rigby and it will shoot 1 in groups at 100 yds. The recoil is not bad most likely due to the ported barrel. if recoil is a problem for you than a ruger no.1 is not going to work the recoil is emmense even with a 45-70 loaded with 350's @ 2200-2300 fps trust me. I currently have a fascination with the 458win as do you but in all reality the carteridge was designed to make a 45 cal bullet rimless so it would function in a bolt gun. My vote would to either get a 458 bolt gun or just go with a ruger no1 in 45-70. the 45-70 has more than enough energy to take all big game guy's are using them to kill elephant in africa. the bullets are cheap and the result is the same. i recently hammered a hog in south texas with one at 50 yds the hog was quartering towards me (the toughest shot) and the 45-70 performed marvilously and penetrated all the way through. needless to say, the hog was dead in his tracs we weighed him he was a full 200 lbs with tusks and everything. Get the 45-70