I doubt many of us will have that many rounds through the rifle. It's a definitely barrel burner, but it also a hunting rifle and treated as such. I want to say that last year I put 10 rounds through mine, and if I keep going at that rate, I'll probably be dead before the rifle needs a new barrel.
Yes I don't see many putting a lot of rounds through these. Mine is long range hunting rig so I will be practising at the range out to 1000. But even then I think 80-100 rounds in the first year to get the scope dialed and then 40-60 a year after that in my application. I always take several rifles to the range so its easy to get 80-150 rounds practise through 3-4 rifles in one day. I did find a post somewhere where a guy claimed he had a few thousand through his barrel! I think your 1000-1200 estimate would be pretty fair?