The address I just looked at in the April 2009 issue of the NBRSA News shows a Gulf Coast Region club as:
Louisiana Rifle and Pistol Club
1600 Cappy Drive
Lake Charles, LA 70605
The contact is Mike Guillot @337-478-2997
Hope this is what you're looking for. Art
I don't think the range has a legitimate address. Leave Lake Charles on LA Hwy 14 to Holmwod, a one-store intersection with LA Hwy 27. Hwy 14 turns East at Holmwood, but you would continue South on LA Hwy 27 for about one half mile. Old Camp Road is on the right and a Club Sign is there at the intersection. As soon as you turn right on Old Camp, take a small one lane trail to your right and it goes into the range.
I hope this helps. Just because I can find it in the dark doesn't mean I can tell you how to find it in the daylight.
You may want to pass along to your buddy that we are a private club and the gates to the range stay locked except during matches. If he's going to a match and arrives early enough before one of the members gets there to open up the place, just wait at the gate. Someone will be there well before the match.