I don't really know, but they have four sizes of replacement trunnions and top latches, at least on the 32s. I would expect one might start getting nervous around a million and a half rounds, given proper care and lubrication.
There was an article in Skeet Shooting Review a few years ago on a K-80 rebuild, it may even be archived on krieghoff's website, and from what it looked like if it could wear out there was a way to rebuild it.
I have a friend that is a AA shooter and never cleans his K-80---Sends it to Ottsville once in a while for a once over and thats it---These guns are made to last a lifetime---I have a Springfield Trap-Door 1884---It went through the Rev war and still shoots like it was new---I also have Krieghoff 32s that are like new---I don't think you can wear them out---JMT---SJB---
From hcopd:<blockquote><I>"There was an article in Skeet Shooting Review a few years ago on a K-80 rebuild, it may even be archived on krieghoff's website...</I></blockquote> K-80 or K-32 rebuild articles from the Krieghoff website: <I>Part 1</i> and <I>Part 2</I>
Most of the blown ones I see are easily put back in service with a new barrel..and forend.. If you read my other thread about Perazzi steel being softer...The Krieghoff steel seems to be harder.. Perazzi has.. and always will double proof to higher PSI ratings.. same with Kolar.. I really like Kolar steel.. plus.. its built like a tank.. While it's heavier..like a Ljutic.. I don't think in 10 lifetimes you'll wear one beyond being able to easily rebuild it..
As American shooters demanded long barrels.. to keep the dynamics..some gun manufacturers went to thinner barrels.. Remember the Sterlingworth???Excellent field gun.. but blown barrels were quite common.. Many people got into trouble backboring some of the earlier barrels.. They shot fine.. but removing any steel in a already thin barrel was not always the best idea..
Hopefully.. in years to come.. higher grades of steel will be used in barrels.. Perazzi bores from solid stock each and every blank..and test steel and barrels all along the barrel making process.. Seitz and Kolar buy the highest quality barrel steel.. and also constantly test for quality and imperfections.. The Alferman brothers are also masters at steel quality as was Bill Cole..and not to leave out Bruce Bowen.. Not only a master.. but a gentleman who has my highest respect..
But.. the bottom line is.. quality cost money.. While I've never seen a Beretta O/U blown by barrel fault.. I can't say the same for a 391.. Remington and Mossberg both had issues when barrels were made in Mexico.. (short lived)..trying to save a few dollars..
i'm sorry to see Hastings go out..They made really fine barrels of excellent steel.. Anyway.. All Good.. Mike
I plan to try to wear mine out but I may not live long enough if what I have read af the longevity of a K-80. I also have a 1884 Springfield that is a shooter. I believe the Revolutionary War started in 1775 and ended Around 1783. Neil