If you want to visit some nice beaches and do some shooting in the same day then visit Koh Larn, when you get off the ferry at Na Ban just do a right and the shooting club is about a 10 minute walk away, or you can get a motorbike taxi, you will see the signs for Haad Ta Yai and Laem Hua Kod if your walking so just follow them.
The Koh Larn Shooting Association sign is a bit tatty.
The range is a bit shabby but by the size of it you could easily have a 100 people in there.
Not sure what has happened to the people seperators on each firing booth
The targets are a bloody long way away though, supposedly not only can you rent ordinary guns, but also semi automatic M16s and shotguns, got to admit I didn't bother.