Remington No 1 Creedmoor

[desert deuce]

The 44 S stamped on the bottom of the barrel in front of the forearm designates a 44-77 Remington.

I am not familiar with a 44-77 bottleneck. There was a 44-90 bottleneck from that period but it is quite another matter and I don't think the rifle would be marked 44 S

Jamison/Captec makes brass for the 44-77 and fine brass it is too.

Don't expect an original chamber to be anything like a modern one for that cartridge. Cast the chamber and slug the bore before you buy any components.

We have an original #1 sporting rifle in that caliber and getting it to shoot satisfactorily was a journey, not quite a trail of tears though.