Early Lifter 10-Gauge Frame sizes?

[Dean Romig]

1 1/2 frame size was only used on hammerless Parkers.

You can determine the frame size by measuring the exact distance between the firing pins but unless the barrel lug is stamped with the frame size there is no way of knowing the frame size for a orphaned set of barrels.






.

[David Noble]

Originally Posted by Dean Romig

......unless the barrel lug is stamped with the frame size there is no way of knowing the frame size for a orphaned set of barrels
.

A measurement could be taken of the inner edge of one chamber to the outer inside edge of the other chamber, or One could measure the distance between the two barrels at the breach and then add the average of the inside diameter of the chambers and come up with a very close guess.