I shot an H and R 20, and with a modified fixed barrel with the 3-1.5-7's at 30 yards, and my results were less than spectacular.
I won't take it to the woods with that shell.
Now with the 2 3/4" federal Heviweight, it was fine out to 25 yards. This is what my daughter will take for the NH opener. Just limit her shots to 25 yards and under.
Hopefully, you will have better luck!