As can be seen by the pictures, this one is a puzzler. It at first appeared to be a Schenkle round, but the rotating band threw that out once the rust and mud were knocked off. Now that Ive bead blasted it, some of the functioning comes to light. There appears to be a forcing band behind the rotating band since it is a separate part and has a slight gap in it that would act to trap gas and expand it forcing the rotating band in to the rifling. The interior is pre-fragmented in a diamond pattern with most of them being about 5/8 wide and 1 long. Im pretty sure it is of U.S. origin and 1900-1917 era. Other than that, I have not a clue. The measurements are following.
Dia @ Rotating Band: 3.150 Rotating Band Width: .570
Dia @ Major Width: 3.007
Dia @ Mouth: 2.200
Over All Length: 10.750
Body before Step: 5.300
Dia @ Step: 2.570
Body after Step before End: 4.700 Flange Width after Step Length: .750
End Piece Length: .750
Dia of End Piece: .810
Thanks for any help. Cheers, Bruce.
Dia @ Rotating Band: 3.150 Rotating Band Width: .570
Dia @ Major Width: 3.007
Dia @ Mouth: 2.200
Over All Length: 10.750
Body before Step: 5.300
Dia @ Step: 2.570
Body after Step before End: 4.700 Flange Width after Step Length: .750
End Piece Length: .750
Dia of End Piece: .810
Thanks for any help. Cheers, Bruce.
