Yes that counts, breeder pens release deer into hunting pasture where they are later hunted and bam, you have a 275 lb dead deer in Tx. I have killed a management deer off the ranch we use to own in Tilden that weighed 237 and one off the junco that weighed 235 not hard for a old big stx buck
raising a northern strain whitetail in the pen and then releasing it into the pasture to shoot is not a native texas whitetail that grew to be 275 lbs on the hoof. even if it is a texas strain, a breeder pen is not a natural enviroment, when your force-feeding them protein pellets
I've killed deer that were in the 215 range on the hoof, and I've seen 2 that were 240 on the hoof. as for the "not that hard" part any deer that weighs 240 pre-rut is a big ol' boy, they are not around every corner.