Having cold hands is expected where I hunt.
If you insist on having gloves the Artic Shield gloves are about the best. However, in my opinion nobody makes a decent and warm glove yet.., or boot for that matter!
They can put men on the moon but we cant keep our hands and feet warm. I've always had a problem with that.
The advice above is as good as I would give. Go thin, carry a muff, add a couple heat packs and you should be able to handle the coldest days.