What was meant by my first post was the difference between the SP bullets that are bonded and the older models that are not. I used both types of bullets without noticing a big difference in the working and the remaining weight of the bullet after impact and penetration. I have also used premium bonded bullets to shot buffaloes, including the Swift A-Frame and the Barnes TSX, otherwise I could not say anything about their working compared to other bullets.
As for the Hawk bullets, some say they are clones of the old Barnes bullets. In this case they have the same jacket thickness as that of the Hornady bullets. Woodleigh and especially Degol make classic SP RN bullets with thick jackets.
Hornady .458 500gr Interbond RN bullet
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