Chamber Length 12 Guage

[Dean Romig]

I see that both sets of barrels are made to the stout 2-frame. As such both sets of barrels are fine for shooting 2 3/4" shells providing barrel wall thickness is sufficient. They should have originally been either 2 5/8" chambers or 2 9/16". Both of those will accept and shoot 2 3/4" shells without compromise.

[Pa SxS]

161588 is a Trojan, not a VH. As I recall, only late Remington Parkers had the chamber length stamped on the barrel lug. Try measuring the chamber length. Take a small flat machinist ruler and put it in the chamber until it meets the start of the forcing cone. Using a flash light shining from the muzzle helps to see the start of the forcing cone.