You are correct @7mmwsm, the bonded pills will retain more weight than Partitions. But the terminal performance of Partitions on the target species & range stated by the OP, “large deer, 50 - 450 yards” is superior in my experience to the ABs.....due to the fact that the front end is more fragmentary creating much larger wound channel and trauma, especially as the range stretches out. While the bc of the partitions is pretty pedestrian it should still be north of 2000fps out of a rem mag at 450 yards.
However if the prime target was big beef bulls up close then I’d go bonded.
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