Strong as any other action out there. A co-worker had a 'friend' work up a load for his 308. At the range he fired two shots, on the second the bolt shroud flew off and hit him. Action pretty much locked up. Got it open and the case was slightly bulged, primer smeared flat and extractor marks on the case head. Two pieces fell out of the bottom when we opened the floor plate.
I took the rest of the ammo home and pulled it. Found out that of the 18 remaining loaded rounds, 3 more had half the correct amount of powder in them. Powder on the correctly loaded rounds was 42.5 gr +/- and on the 3 others was around 34 grains.
I have never heard of one giving up the ghost on a bad reload or whatever. Solid actions that quite a number of folks have built custom rifles off of.
