the gun does'nt make a differance a 2013 mossberg 28gaand you're Ivery Johnson will shot the same loadjust get 28ga shells and you'll be fine.
If you are refering to the Iver Johnson model excel shotgun,which was made from 1910-1935;then these shotguns were chambered in 2 3/4 inch shells.
i have a champion 12 gauge by iver johnson with a 36 inch barrel
A 16 gauge Iver Johnson Champion is worth fifty dollars--sixty if you throw in a box of shells worth ten dollars.
34561 XI
Iver johnson silver shadow over under 12 gage
Iver Johnson did not have a 410 gauge or bore in 1907. The 410 came along about 1920.
Iver Johnson
age Iver Johnson shotgun serial # 33743
$25-50.00
I can write a book about 'what I don't know',,,but I don't know of a 10 gauge Iver Johnson,,,,maybe a 12?? Jim Spear
50-100 USD
No. sales@countrygunsmith.net