the closest one i found was the corsair, at a grand 87% of what is posted in the manual! the worst of the stock aircraft, (the ones i tested in total F4U,F4F,F6F,A6M2,P38,TBF,NIK2) was the P-38 at a lonesome 31% of 1750 miles.
I believe most of the accuracies are wrong because the cruise altitudes are set low (between 7 and 12 thousand feet) as per to gain the accuracy of a short wide theatre, unlike the ETO which was narrow and tall.
I have a few addon aircraft that are within a few miles, the worst addon aircraft was a B-29with a written range of over 4000 miles but a simulator range of around 600.

Just posting info that may help mission builders. ;D
Corsair 1362
Wildcat 513
Hellcat 788
A6m2 751
George 757
TBF-1 466
Lightning 544
mind you all but the TBF had drop tanks and all did have to take off from a ground base.