samyang 45 Vs texan

I recently casted many types of .45 ammo for my samyang 45 and want to get the texan when it arrives in Canada. Does anyone else own a samyang or texan? Just curious how much power and amount of shots the texan has over the samyang? I recently casted Lyman 480grain bullets that are .457 and hope it shoots well for the texan. I have been doing 150-400yard shots with 220 grain and 29 grain bullets. I do 600 yard shots with my 9mm recluse using 125 grain bullets. I am a big fan of bigbore airguns recently. It’s hard to go back to .22 pcps.