varmint cal.
If you want 'em dead, whack 'em with a .243 or 6mm. If other conditions factor in, such as pelt damage, or limited space for shooting, then use any good .224 cal. (.222, 223, 22-250 etc.)
.17's and 204's will work but you won't get the duality of use that you will from a .243 or 6mm (varmint/deer capabilities).
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