Gil: As promised, here are my dimensions

1929 M17: 14-inch LOP, Drop @ Comb 1 1/2, @ Heel 2 7/16

1939 M37: 14-inch LOP, Drop @ Comb 1 1/2, @ Heel 2 5/8

So, 3/16 more drop. Significant? The M37 is a 16.

Tim/Joe:

Barrel weights on the M17: 26-inch I/C is 1lb7.5ozs.
28-inch Mod is 1lb10.2ozs.
Barrel weight on the M37: 26-inch I/C is 1lb5.8ozs(for comparison).