John: There is a map at
http://www.ifx.net/~popgun/sc_mcrc.htm . The map isn't oriented North-South, but you'll get the general idea. Just come down I-26 from Spartanburg towards Charleston and follow the directions.
The contact number is: (803) 796-1009
Membership is $100 per year, and you must be a member of the NRA or GOA.