What can you tell me about the 7mm round?

i have found a guy on armslist who wants one of my handguns in exchange for a 7mm bolt action rifle. now i don't know much about the 7mm round so i have some questions. what is the effective range of the 7mm? can i take a deer with it? how much is the ammo per 20 rounds and can i buy it in bulk? what kind of... show more i have found a guy on armslist who wants one of my handguns in exchange for a 7mm bolt action rifle. now i don't know much about the 7mm round so i have some questions. what is the effective range of the 7mm? can i take a deer with it? how much is the ammo per 20 rounds and can i buy it in bulk? what kind of bullets are there in 7mm? how much would a savage model 110 with a cheap tasco scope be worth?
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