Bama, don't pull your hair out you'll lose it soon enought. Then you'll look like me. :grin: I have not had the 24F model, but some of the older ones have 2 holes on the flat piece and a single one on the rear sight flat. They make 1 or 2 piece mounts I believe for them.
When I was younger I had to shoot a new gun ASAP. But I think I would wait until your new gun arives and buy the mounts. If your are not drilled and tapped you may need a gunsmith anyway.
I believe the rimfire models have the standard groves for the rings to clamp onto. That system works fine for the rimfire barrel but dosen't hold very well with thye shotgun barrel. Regards, Byron