I'm by no means a WT expert, only having messed with them for the last 5 years (beginning when I started school at UI), but I did pick up a number of sheds over there. Judging by the 'tiers' of the sizes of sheds I picked up, I'd guess the first one is 2.5 and the second 1.5, like most of the others that have posted.
You're right about that one having a heck of a body! Likely the corn, or hay like you say. Never seen a mountain whitetail that small with a body that big!