I believe the suggestion by Parker and others to USE 2-3/4" shells(all were paper with fiber and paper wads) in 2-5/8" chambers was to maintain a better seal between the shell mouth/chamber wall and wads as they start slightly into the forcing cones. 2-3/4" shells are 2-3/4" long when fired, not 2-5/8".

> Jim Legg <