I used to wear a heavy rag wool glomitt.....thinsulate lined, tight weave. If it was super cold -20 or so and on...I'd have to add a liner glove. Shot my caribou in 02 in some bad cold and about froze my finger tips off. It made a case for shooting a tab at the time, all fingers had (if I had had put it on) the liner glove covering all exposed skin.
Good luck finding them now a days and if you do say something! The ones I've found are a very loose weave, usually have some kind of cheap plastic line between the outer wool shell and inner insulation and just arent as warm. They were quite nice, minus maybe the stitching for the mitt part, they always fell apart there. A little tlc and they were good to go again! The newer ones just dont cut the mustard for warmth!!!