I hunt with a H&R single shot regular. I have them in 410, 28, 20, and 10 gauges. My 12 gauge is a Stoeger Uplander SxS, and a Legacy Sports short barrelled O/U. 28 and 20 are my favorites, but I like the Legacy for rabbits, Bob Whites being non existent around here now. The 10 for ducks and turkey, but I have used the 20 a bit, especially for turkey. The 28 and 20 are the choices for those days my chiweenie ( Daschund/Chihuahua cross) is finding skwerlz for me. Also use those two for doves, although doves usually mean my 20 gauge pump. The 410/45 Colt H&R Survivor is my truck/tractor gun.
Huge fan of single shot rifles and shotguns here. My "standard" hunting battery consists of the H&R Handi Rifles in 45-70 and 30-30. The H&R Sidekick 50 caliber muzzleloader, and the Pardner 20 gauge shotgun. The H&R Sportster in 22 Magnum tales care of my rimfire needs.
A also am on the lookout for the Henry Single Shots, but I want them in rimmed cartridges. I'll take a rifle in 45-70, 30-30, and 22 Hornet, and the shotgun in 20 and 12 gauge please.