The real question is, how many of the 1-3/4" mini shot shells does it fit? Double digits!?
5x3.5=17.5/1.75=10
Reliable has on their site these guns with a ProBore IC, are they different that yours? About the only thing keeping me from buying one is the fixed choke.
https://www.reliablegun.com/en/remin...d-black-finish
The Abomin870!