Just over your budget with out a scope from the factory is the New Remington 700, formally the Johnson rifle.
https://www.remington.com/rifles/muzzleloading
Cabel's has it for $950.00
Gander Mountain has it at $810.00 with a Peep sight.
Sportsman warehouse $800 to $849.
May be other deals around so do your shopping.
Al