so i have to run out later today before the barn to pick up a bit for the horse i've been riding... dumb me did not get a chance to measure his current one, so i pose this general question.
do i go with 5" or 5.5"?
i know 5" is pretty much the 'average' bit size, but this dude has kind of a big-ish head. he's a TB, probably around 16.1ish, kinda chunky with more of a WB type head, but he isn't totally moose-headed. is it better to err on the side of a little larger?
Full cheek can be tight on the corners of the mouth if it's too narrow.
Assuming your local store has the full cheek in the mouthpiece you want in stock-something rare at mine-I'd go with the 5.5 unless they have a 5.25.
If you are outlandishly lucky with what the store has in stock (and it is snowing in Cancun), try both the 5.5 and 5.25 on him for the best fit. The 5 is going to be a little snug in a full cheek on most TBs, especially one not having a dainty head.
When opportunity knocks it's wearing overalls and looks like work.