Choke specifications from the L C Smith Plans & Specifications book show them in 12ga having a choke cone of 1 9/16" in length follow by a parallel section of 1" length at the muzzle. Specs are not given for the 16ga but likely similar. thus cutting the barrel by 1" would do little except remove the parallel, the constriction in the form of a "Short" taper choke would remain.
Most companies who used the taper choke such as Lefever & Fox etc used a much longer taper but no parallel at all. Full choke in my Lefevers generally runs around 4" in length.
This drawing is not dated so perhaps early LC's had a different configuration. Whatever the case my thinking is sounds like very useful patterns, don't fret it, just enjoy them.

Miller/TN
I Didn't Say Everything I Said, Yogi Berra