How much of a bump up in precision do most of you folks see switching to one of the premium makers barrels? Are the worth the $ and tuning efforts (headspace)? Why did you upgrade to an aftermarket barrel?
A lot depends on a lot, of course. But I went from groups with midrange ammo from (best groups) around 0.5-0.7 with the OEM CZ factory barrels inch to 0.2-0.3 inches with my Lilja barrels. And I can't do that on command either 'cause I am not that good a shooter. There was a measurable improvement, to be sure, but no guarantees. Only you can decide whether it is worth it. I like those little bug-holes, so to me it was.