Rattletrap1970 has it right,,,
TC Barrels aren't that expensive,,,
Since you already own the gun,,,
consider more barrels for it in calibers you are interested in.
That's the beauty of a TC pistol,,,
It's a .22 lr or a 30-06 or anything in between you want it to be.
So if you want a .44 Magnum just buy the barrel,,,
when you get tired of that, swap/sell it,,,
Then get a .223 barrel and snipe,,,
Then a .45-70 barrel.
It's a very versatile and fun gun,,,
Expands your hobby.