Driftrider,

The authors noted also the odd behavior of the 9.3x62 and did not have a good explanation for the results. They thought the results might have been because of marginal hits at the edges of lungs or unfavorable bullet deformation.

Popeye,

I agree with you that the high number of .308's in the study will give you statistically different conclusions than just a few data points will. I did a quick calculation and found that 1,619 of the entries or about 36% was with a .308.