ok, i need help. my grandpop has a crosman pumpmaster 760 - D. i want to buy one because they are petty d**n accurate. please tell me what the differences are in 760 d, c, b, or a, i have no clue. i know how to use the bb's, but i understand they use pellets. how do you load them, and do i need to buy one of those 5 - round pellet mags?
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