Gunsmith called today and said exactly what you are saying about extraction issues... he quoted $40-50 to remove the barrel and smooth out the offending parts... i guess anything to get this rig to group better.
Jesse, The action polishing won't improve accuracy. But your Amax load shows excellent potential. A little tinkering w/ seating depth & 1/10th gr changes in powder chgs should make your rifle a real fly swatter. Keep on keepin' on
Lungbuster, GREAT pics!