Possible Clues:

• Be you a non-drinker? There could be lots to drink in this
• What's behind bar? Tango
• Smoker's throwaway
• The barrel end of a gun
• Might C ask for anything so big for the ram to do?
• Save time in the end
• Target the rear
• What a ram would do to get on and get into a hole
• Bum a fag end?
• Scapegoat - strike - bottom - barrel