Quick Answer
Some hunters argue against using .30-06 for whitetail due to its relatively slow expansion and less than ideal performance on larger-bodied deer, as well as its tendency to create larger exit wounds and more damage to the animal.
Limited Expansion
The .30-06 Springfield cartridge is a popular choice for many hunters, but its performance on larger-bodied whitetail deer has been questioned by some. The .30-06 has a relatively slow expansion rate, which can lead to less than ideal penetration and more tissue damage. In fact, research has shown that bullets from the .30-06 can expand to only 0.75-1.0 inches in diameter, which can result in a larger exit wound and more damage to the animal.
Comparing to Other Calibers
In comparison, the .270 Winchester and 6.5 Creedmoor cartridges have been shown to expand to 0.90-1.2 inches in diameter, making them more effective on larger-bodied deer. The .308 Winchester, while similar to the .30-06, has a slightly faster expansion rate and is often preferred by hunters for its more consistent performance. For those looking for a calibre that balances performance and recoil, a 6.5 Creedmoor can be a better option.
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