A while back one of our members posted this hang-tag for a .410-bore --
235582 .410-bore, 2 1-2 inch, 3-8 ounce.jpg
It shows the 2 1/2 inch 3/8 ounce load. From the tables in the back of
The Parker Story, this is the 206th .410-bore out of the 506 serial numbers listed.