Go to the NRA website. Their competition magazine "Shooting Sports" is available FREE online. It's a monthly. At the rear of every issue is a list by discipline and State of every registered competition in the country.
http://www.nrapublications.org/ssusa/index.html
There is a 2700 match every month through October in or near Chattanooga. April 9 is the next one.
The contact person is B.Leckie, 6638 Sandwood Cir., Hamson, TN 37341
Pete