the troublesome basin produces what you are looking for. the nevere summers are also a good bet but you might not even see a elk, becauses theres nothing easy about that country. The sangre de cristos also produce what you are looking for, but its the roughest [bleep] colorado has to offer, If you set a hunt for that area you might not be looking for a 300 inch bull, but you also might be lucky to get out alive!!(thats no understatment)A 300 inch bull is not going to be easy to find in any colorado unit, but then again there is proably one in every unit in colorado. The flattops have produced 300inch elk, but they are damn tough to come by up there. I would focus on the troublesome basin and head over and check out elkheaven.com, do some research and you might get lucky.
