This all gets really confusing. I find earlier hang tags even more confusing with these lines
Length of Shell 2 5/8 Inches and then the next line
Use Shell 2 3/4 Long?!? This gun targeted with 1 1/4 ounce --
108998 12-gauge, 2 3-4 inch, 1 1-4 ounce.jpeg
This gun targeted with 1 1/8 ounce --
125594 12-gauge, 2 3-4 inch, 1 1-8 ounce.jpg
Later 12-gauge tags generally state
Use Shells 2 5/8 Long if they were targeted with 1 1/8 ounce --
211184 12-gauge, 2 5-8 inch, 1 1-8 ounce.jpg
214724 01 12-ga 2 5-8 inch.jpg
and
Use Shells 2 3/4 Long if they were targeted with 1 1/4 ounce --
216599 12-gauge, 2 3-4 inch, 1 1-4 ounce.jpg
216599 12-gauge, 2 3-4 inch, 1 1-4 ounce.jpg
I have found that the vintage paper shells I've fired and checked for length were very uniform and right on for stated length. Not at all like modern plastic shells.