I don't know , maybe 1500 rounds?? I don't shoot it that much for reasons such as that and I've got several other nice LR rifles that are less wear on the bbl, cheaper to shoot and good to 1400 yards. I built it because the .338 Lapua costs were killing me and with the 230 at that speed the ballistics and energy were almost identical to 1500 yards. Then the 338 overtakes it. But where I win is in my wallet.... Brass, powder, bullets ect... For the most part all cheaper. And I've got a stick that still has enough energy to bring down a Whitetail at 1500 yards
How far off the grooves do you set the 230s? I have the ones with the higher bc .743 the hybrid target bullets.