To my knowledge, no one named Choate ever made rifle barrels.
He may have been a gunsmith though.
The present Choate Machine & Tool company had to get it's start somewhere back around 1970 something, so it is possible Mr. Choate started as a gunsmith, and put a Douglas or other barrel on the rifle, chambered it in 25-06, and stamped his name on it.
If you have occasion to take it out of the stock, look on the bottom of the barrel under the wood for other manufactures marks, including the Douglas XX premium barrel mark.
PS: It is also possible it is a "25-06 Choate" wildcat cambering?
People did a lot of that back then just to have their name on something a little different.
It would be wise to have the headspace checked before shooting standard commercial 25-06 ammo in it.
rc