>>64223595
Taylors and Co imports Uberti top breaks.
You have either the Russian or the Schofield in many different lengths and finished in 38, 44 and 45. They are pricey and will run you $1500 for the least expensive model.

There are no magnum offerings, the top break frame is thought to not be strong enough for magnums.

https://www.taylorsfirearms.com/russian-6-5-44russian-rc1-550685.html