Couple of legal points.

- Use of airguns is generally restricted to your own land unless you
have permission. I'm not sure where a rented allotment stands
- You would be committing an offence if you carried the gun through
the streets with a pellet in the breech even if it was not cocked.
- You would be committing an offence by releasing a grey squirrel
anywhere but on your own land. Humane killing is fine.

Steve Harris - Cheltenham - Real address steve AT netservs DOT com