My mom used to shoot 243, the last season she used it she lost 2 deer. First one she hit 4 times in the vitals. I trailed him for 1.5 miles before I lost the trail. The second she hit and he just kept on grazing like nothing happened. Since it was getting dark we gave up and went home.
OK so how do you know all shots were in the vitals since you gave up tracking? Sounds like the shooter and not the gun. What kind of bullet was used?