Period correct '74 Sharps Buffalo Rifles?

[Gunner500]

The deeper I get into the Sharps rifles, the more I'm being drawn into period correct buffalo rifles, what is correct?

#3 Sporter
#1 heavy barrels
Bone pack colors
Fire blued screws
Polished steel barrels
Schnabel fore end

I've recently heard some bull barrel guns were used, as well as pistol grip rifles with pewter nose caps.

What are the correct calibers/cartridges?

40-70 SS
40-70 SBN
40-90 SS
40-90 SBN
44-77 SBN
44-90 SBN
45-100
45-110
50-90

I may be to the point of ordering a period correct buffalo rifle, any help, additions or comments are greatly appreciated.

This will be a barrel ladder sighted hunting rifle, brass availability will be a major deciding factor.