Years ago when I lived in DE a friend had an H&R ultra 12, In my opinion it shot a really tight group at 100 yrds, close to all touching if I remember and maybe a 2-3 in group at 150 yrds. I remember it really liking the remington copper solids. It was heavy but not unbearable and more specifically front heavy. On the upside the weight made it recoil less than my mossberg 695. Over all It was a good gun and I liked the Ultra. Using a quality slug 20 ga is more than enough to put a deer on the ground. From what if heard and or read you pick up some velocity over the 12 and get a flatter trajectory. Try out the different slugs and see what it likes and go from there.
i bought one in 20 guage 2 years ago and I have taken quite a few deer with it. it shoots like a rifle in my opnion. It's on the heavy side but it's not unbearable as others have also said. Mine likes the Copper Solids. some guys don't like the idea of a single shot but it's soo accurate with a good rest you don't need more than one shot. I was hunting in MD wiht a buddy wehre it's slug only and I took 3 does that the slug passed right through so fast I thought I missed all 3 times. the deer literally did not flinch when hit. they took a few more steps and jsut fell over. i can't say enough good about the gun.
I use those copper solids in my 870 slug bbl. they do drop a deer for sure. Your right about the first shot I let my deer come in so my shots are 40yds. or less so one shot would be ok. I've seen guys with the 2 round slug holder on the stock just in case i guess...later
The H&R Ultra 20 gauge is a fantastic gun... Accuracy wise it is a tack driver. We see alot of 20 gauges out in Illinois. Plenty of medicine for whitetail's. Everyone I know that own's one rave's about it.
I have one worked fine for 3 or 4 years then started misfiring.Do a search this is a known problem with these seems to be mostly the 20 gauges. I put a new hammer spring in mine seems to have fixed it. Haven't shot it enough to be sure
Shooting in rifled slug guns can get expensive. So bad that some of the pack of 5 special slugs can run you up to $15.00. bad if you want to find which one groups the best.
Now if you could get your slug guns to shoot the cheap Foster Wal-Mart $3.28 pack of 5 slugs. Then it would not be so bad.. Or if you could roll your own???
If you have the money to do it however once you find the best $$$$$ sabots or rifled slugs that shoot well in your gun then it's not bad to buy them only in the future.. It's trying to find which expensive $$$$$$ shoot the best that is frustration..