I own a 1889 Remington Grade 3 sxs shotgun bearing serial number 2469xx. I know by the serial no. block that it was born between 1900-08 but, I am looking for the exact year. This gun has damascus barrels so I assume we are talking blackpowder. Does anyone know how many Grade 3s were built? Also, does anyone know whether it is a 2 3/4" or smaller blackpowder shell.(a modern 2 3/4" slips in perfectly). I would love to have a good blackpowder recipe using modern hulls? Thank you.