Man barrel life is very short on this forum...I have a 22 mag with 1,000 of rounds though it and I mean 1,000s--still shoots good to this day...I finally replaced a 25-06 barrel when it was getting erratic...it had to be north of 3,000 rounds as it had some good days on Prairie dog towns in its day...friend of mine and a 22-250...north of 3,000 rounds--it is his main predator rifle--says it is still shoooting good. Another friend with a 308 has close to 4,000 rounds though his "range gun" still holds right at a MOA. When at the Blaser plant in Germany in the mid 2000s there cinema gun was 8x57 R93 at the time. He told me that gun and barrel combo had around 6,000 rounds shot--but it was going to need replaced soon....so I'm with lancekenyon I think you will get north of 3,000 if taken care of easy and probably more like 3500 to 4,000.