I was wondering whether various Police Forces have different attitudes to the owning of multiple cylinders for BP revolvers? Are there any BP competitions for example that require a pair of cylinders for quick reloading and whether such comps are deemed justification? Also what is the distinction between having a spare cylinder and having a 'set' whereby both cylinders were originally provided with the revolver?

I apologise for all the questions but if requesting a variation I would be interested in how you would word the justification for wanting to own an additional cylinder. Imagine 'Target shooting' would be insufficient and evidence needed to be provided why rapid reloading was required.

Many thanks.