Seems like you are missing something. Stage diagram shows shotgun targets but no instructions for shotgun. Were they just props for this stage? I could see this stage run as 10 rifle knockdowns with any left standing taken down with shotgun after 2 shotgun targets are down.
Maybe after the next ammo shortage. Just don't shoot your eye out!
I could use my old Daisy lever gun but the targets will have to be closer. Would take some practice to hit the steel, being I'd have to aim above the target at rifle distances.
We shoot indoors in the coldest winter months in PA. Shooting cardboard targets, at one club using heavy triple thick cardboard, I have picked up some 45 slugs that didn't penetrate the target, even found one slug stuck in the cardboard. I gave them back to the shooter at the unloading table, though he may be able use them in his reloads.
I just put this and the Hit Factor kit on one of my 650's. They do help smooth out the machine. I recommend the upgrades. Primer seating depth adjustment seemed to be off for me. I sanded the cap screw down some to seat the primer more.