Terrible sectional density is what I think of when wanting to try those on deer. Hardcast 255s would bore thru nearly all the jugs you dare line up. Out of curiosity I'd like to see how those would perform if instead of making HPs out of them you instead blunted/flattened the nose of them as if they were hardcasts. Bottom line, .451 dia, sub 230grn bullets just won't make great deer bullets because of their typically "avg/below avg" accuracy & aforementioned poor SD.

But certainly for cheap plinking/practice, they'd be great!