mk, i for one like your 2 cents worth

and
Quote:
states that in ninety nine percent of the cases the accident has been caused by an obstruction in the bore

So what happened in the other 1% of the cases?

If the 1% were due to steel failure the 1% of failures can be taken against the entire population which in this case is 800,000. Or 8000 guns that would statistically have the same issue.