Mark et al: Remington was the defendant in a major lawsuit over this issue maybe 15 years ago, and lost. Prosecution was able to convince a jury that their metallurgy was deficient in, I think, their 870 barrels from the 60s and 70s. Their allegation involved the embrittlement issue. That is slightly different, in that it was not age related. This information I learned in a class that I took at our junior college in metallurgy, taught by a nuclear physicist who was the expert witness for the prosecution. I could not find my notes from the class so this is from recollection.
