Found one campsite, which is... :
Brocklands Farm Partnership
Brocklands Farm, West Meon, Petersfield GU32 1JN 01730 829228
However, on speaking with them, they said at this moment in time, they will only take 3 night bookings as it's the bank holiday.... but it's only £6.50 a night. There is another catch in that they don't have a toilet block, so can only take those with chemical loos...
Will keep looking and posting details as I find them.
I have mentioned the event is being run by Meon Valley Airgun Club, so they are aware that we are shooters.
BFTA/NSRA County Coach
CSFTA Chairman/BFTA Rep