You'll find quite a few AL shooter here at the hide. And there's a few places not far away to shoot. Not sure of getting the .338 LM in any of the local matches and the 300 wby is maybe pushing the envelope also cause of damage to the steel. Most ranges are asking for .300 min mag and no higher with velocities no higher than 3000 fps. This is just to keep the steel safe and non damaged. You can look up Docb here on the hide. He's down your way and holds the info on the Hardrock matches over at Society Hill. I'm sure there a few more closer but BGTC (Brock's Gap Training Center)in Hoover, AL holds matches of all sorts each month for long range to cowboy action, QCB type stuff just google then.
Welcome,
Ken