Chamber length

[J.B. Books]

Originally Posted by Dean Romig

It is quite possible that the superintendent of the gun works, along with upper management, in an effort to simplify the operation and keep costs down, chose to begin chambering at least the 12 gauge guns at 2 3/4". Maybe they discovered that the supposed "improved performance" provided by a "better gas seal" wasn't significant enough to warrant anything shorter than 2 3/4". Who knows...? I think the reasoning behind all of these variations in chamber length died with the men who developed them.
Yes, they did want to make the finest shotgun on the market that would out-perform all the others, and they certainly can't be faulted for that - but times were tough in the 1930's and many things changed as a result.
.

Or perhaps they were forced to adhere to SAAMI standards.