Possible Clues:

• Such arms carried little at first
• Southern shopping centre tolerated, not of high calibre
• So dull and so young! There's nothing for it but to shoot one like this
• Not much and not much interest for the shoot
• If one so young is so dull there's nothing for it but to shoot it
• Dull person of no standing and little calibre
• Although young, dull enough to 4 across
• Although still young, dull enough to get shot