todays playing around took my 4 groove Krieger 8 twist 6BR-DX over the 2,000 round mark,,I usually just goof off and bang steel and shoot at small bottles of Tannerite and the like,,to mark 2,000 rounds I put 5 rounds on target at 600 and even with the throat stretched a bit it will at least still hold under 2.5 inches,,been a fun barrel and have a Brux getting done with same reamer
105 Scenar
33.3 RL15
BR4


105 Scenar
33.3 RL15
BR4

