I'm pretty sure that Warren B's reamer
I'm past 2000 rds. in my bolt gun and haven't had to chase the lands.Would a reason for voting for zero free bore be the advantage of "chasing" the lands as the barrel starts to wear? Going with my present day shooting regularity I sincerely doubt I will ever chase the lands on this rifle. It's just something I wanted to build and it will probably not be shot very much. I have until Monday to decide on the free bore.