You can also have a "dual caliber" New Frontier for a little extra $$,by getting a 3rd Generation 44/40 cylinder for your gun. Ive seen cylinders on "fleabay etc." go for a little over $100.
Bought a 3rd Generation 4.75" New Frontier,one of the last ones "put together" in late 81,early 82 in the 15 k # range.,I won't say "assembled and fitted",because the gun was NIB,but developed a cylinder ring within the first 50 rounds. Yes,I bought it to shoot! A few hours of fitting,and a new bolt,I had a winner,that could handle heavy 44/40 loads,and the adj. sights make it flexible for different loads.
Last year I picked up a new 3rd Gen. 44 Special cylinder,and using .428/.429 sixed bullets,for its bore,it is very accurate.
So,if you want to shoot it,you have plenty of options.
Bud