Roger,
I have a Charles Boswell Lee Speed in .375 2 1/2” with a 25” barrel. Have not chronographed it, but use .375 2 1/2” “vintage duplication” loads from (I forget which right now) either Graeme Wright’s book or the Woodleigh manual.
Not as short a barrel as yours, but when I get a chance I’ll check velocity and post results here.
- Mike