Between 2.5 and 4 seconds

Some guys are getting similar barrel life to a 308 if you take good care of it…but its all subject to your loads, heat soak  monitoring and proper maintenance.  5000rds should be attainable…

I'm still new to the Tikka system (had my 260 CTR since 4/15, 1400 rds) and have no idea what I should expect about barrel life from these guns.

I shoot my CTR in competitive long range tactical matches, 5-10 shots per stage usually shot in 90 seconds or less with a total round count for a match being between 60-150 rounds.  So far my speed of ammo is around 2715 fps (with 139 gr Senars) and I plan on keeping it in that area in the foreseeable future.

So given the above, what should I expect for barrel life?

Thanks for any insight you might have
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I know this is a departure from your original post. I have a 260 CTR and was wondering what load are you using to get your 2715 fps.  I also use 139 Senars but have not been able to achieve your results but have not pushed it yet.  I just got mine late fall.

Thanks for any feedback.

I think a lot less than 5000 if you are shooting 10 shot strings in 90 seconds repeatedly. To a certain extent, polishing the throat can help delay erosion. Nathan Foster of terminalballisticsresearch in NZ has a very good book on the market which describes the process:

http://www.ballisticstudies.com/g