Dunno, but I don't think H&R Inc had a Pardner, I'm pretty sure their Topper frames were marked Topper tho. Maybe someone else with more H&R shotgun knowledge can answer that question, I only have one shotgun made by them, H&R Inc went out of business in 1986, H&R 1871 won't fit barrels to your frame, although you can fit a second hand barrel yourself, that's in the FAQs too if you're interested.
Tim