Barrel life has to many factors to be able to just give a number.
Chrome moly VS SS(yes I know you said SS)
Degree of loads(running hot vs mild)
Not over heating during LD(possibly more life out of a bull barrel?)
Etc
Etc
Its on the lower end of overbore cartridges but it is still in the group so throat erosion is a factor but is you still follow the lands as much as you can you will squeeze the most out of it.
Have a look at these 2 things & come up with your own judgment.
Good luck