Shooting Gazette: In the last month of the season should I be thinking about increasing pellet size or shot load?

In his Expert Instruction column in the Shooting Gazette, this month Adam gives an expert view on the question: ‘In the last month of the season should I be thinking about increasing pellet size or shot load? Or is this a bit of an old wives’ tale?’

Expert Instruction (Shooting Gazette January 2017)