Sorry Indydave,
I ordered my 500 in August, and am still struggling with the handi rifle. It's handy, fits me, and simple, and I want one. However my 500 was bad, opening on firing. H&R customer service was basically, we don't care, it will be a week or so in shipping after it's fixed. I talked to Gordon who said they have many 500s coming back. So I ordered a new 44 as replacement. He promised that.
Gun came back several weeks later. Scoped it, loaded ammo with new dies etc, an hour to the range, to find that it still flew open on firing. Same reciever. No targets with it or anything, and they kept the sights and manual. Apparently they didn't test fire it after changing the barrel. I don't believe it only opens on firing with me. Not test firing is a serious matter. So, I sent it back AGAIN, and this time they did replace the whole rifle. So I'll scope it, lap the bore, and go see if it will shoot. Of course I missed hunting season with it even though ordering it in August. I'm sure there are good ones out there, and I hope I have one now. Their non-caring "just send it back for a refund" doesn't quite cover the time, money, scope, ammo, and frustration, like you said. My friend bought a 500 a week ago, and it functions OK, but best groups are about 6 MOA, with several loads tried. He is a good shooter. Did I mention that good ammo for testing that costs 50 to 65 bucks for 20 or 25 rounds. So indydave, I can't recommend this for our IN rifle choice either. Very sad. With decent quality control it would be a very nice little gun. And Handi too.