Go to the Leupold website.
There are many handgun rounds that exceed the 44 mag. 454, 460, 500 to name a few.
500 USD or so.
Made by S&W.
100-500
500 - 700
10-100 USD maybe
@ 500 USD.
100-500 USD or so
0-400 USD depending on condition. 0-400 USD depending on condition.
The pistol in the movie Dirty Harry was a .44 mag - "the most powerful handgun in the world" according to "dirty" Harry Callahan.
The .22 Magnum wasn't invented until the 1960's, so any "1871" handgun chambered for it is a reproduction.
Whatever is available ought to be OK. (40grains.....)