I had the Western Arms bore measured by a smith yesterday.
Right barrel
At 3" 1.010 OD .756 ID; 6" .880 OD .743 ID; 12" .820 OD .743 ID; 20" .800 OD .743 ID.
So, it appears it has about 3" polished forcing cone that at 6" is .743 all the way to the choke. Right muzzle .711.
I patterned it yesterday with RST #6 shot. Both barrels threw 14" patterns at 20 yds. which is Full.
BTW. Does anyone have a Western Arms Long Range Deluxe. The Deluxe had checkering; does it look like this?
http://www.shotgunworld.com/bbs/cpg1410/displayimage.php?pid=6042&fullsize=1