what is the smallest gun or bullet size i could use on a deer and still get a clean kill? i want to get a good varmit gun that i can use for deer too. another question is what is the fastest varmit gun. i think it might be a .22-250 but im not sure. that is what i want to get but then i will just have to get a different gun for deer cause i think that would be too small...just let me know what u think. thanks

Logan