My booklet is 2012/13 so likely the direct contact details in it are out of date,

Try www.shootingclubdirectory.co.uk look for "The Ramsgate 1957 & Dover 1900 rifle club" via the NSRA 01483 485500.

I've also got the "Thanet Pistol & sporting gun club" listed as a private club with contact via the NRA 01483 797777.