What is the range of a bb gun?

depends on witch gun likemine is 300 ftps witch could kill abird at 70 yrds

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BB guns are inherently inaccurate, because of the barrel design. BB barrels are commonly smooth boar (Like a straw). When fired, they tumble not spin towards the target. This action causes them to be off targets as the range increases. Most pellet's are usually fired from a rifled barrel. This gives them a spin as the travel towards the target, giving them more accuracy.