Which Texan would you prefer of the two calibers

Hi , I am looking into getting a Texan in either a 308 or 357 caliber . I have never shot or know of anyone of my friends that has shot one . I am looking to see which of the two calibers tend to be more accurate than the other or are they the same stock . Also the availability of ammo . Which caliber has the better choice of ammo that is out there or are both equal in that area . My use of the gun would be for target shooting and hunting game under the size of white tailed deer to woodchuck and coyotes