Johnny, Welcome aboard! I've been away for a week or so, so sorry about my late response. Here is a thought for you. If you can only own four rifles, are there restrictions on how may barrels you can own? As you know, your .22 Hornet is old enough that H&R will not fit other barrels to it, but barrels do come up for sale on e-bay, and other sites. Since only the receiver is serial numbered,it would seem to me that additional barrels would not be considered "firearms". If more barrels are not restricted, you could put shotgun barrels on it ( .410, 20 ga. and 12 ga are readily available, sometimes 28 ga.). Other rifle barrels would be resticted to low-preasure rounds, 30-30 is common, and .357 mag and .44 mag were made and show up from time to time. With a shotgun barrel and maybe a .30-30 you would have a wide variety. I'm no expert on the early H&R's, but if you do try to get additional barrels, I think there are two "families", neither of which are interchangeable, one for the "snap-on" forearm, the other for the "screw-on" forearm. Others here can give you more info if you need it. By the way, I own an early H&R in .30-30. I replaced the wood stocks with the newer plastic ones, because they are lighter, and the butt has a high comb for scope use. I think of it as an American "stalking rifle". Mark.