Lapua is better brass in my opinion, but Bart B is right about blueprinted Winchester Remington being just as accurate.
Not saying it couldn't happen, but I have never had a Remington/Winchester case go 30 rounds...not even close. I would suggest 5-10 to be a more realistic number. I usually pitch Lapua at 10-15 reloads, but you could easily keep going if you wanted. At that many reloads you are looking at completely re-bluepriting the brass...or at least fixing up the neck/dread doughnut.
All of this depends upon pressure. If you load hot any case will be short lived.