I think 45LC would do fine on deer. You'll probably want wadcutters and a book on tracking, cause that deer is gonna run. It is a pistol cartridge. .410 works well for squirrels, birds, and rabbits, so long as the cone is dense enough at a given distance. You'll need to figure that out when you pattern it.
[Remington 870 12GA][
Stoeger Model 3500 12GA][
Savage 116 .30-06][
Savage Model 10 Bull Barrel .223][
Marlin 336SS .30-30][
Marlin 39A .22][Marlin 795 22LR][
Beretta PX4 Storm 9mm][
Ruger MkIII 22LR]
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