Send it to Rod for a rechamber.

But, you will find that the Maximum has a lot more recoil snap than the Magnum...in fact, IMO, not far off of a lighter loaded .44.

If you keep it as a Magnum, do the 180gr loads like other have mentioned. I load 180gr Penn cast in my brothers M94AE .357 Mag. He's shot a pile of deer with it...even some hard quartering. One shot entered in front of the ham, out the other side, back into the neck and back out the other side! They are not loaded hot.....a stiff 10" Contender load could match that 16" lever gun load I use.