I have seen that and it is the best documentation that a metallurgical report comparing the 870 and the H&R Pardner Protector was ever done.
I am trying to verify that such a test exists other than in the mind of the author of that "article". A few things about it.
I followed the link and could not get the article.
That exact post was placed by MAX100 on several gun boards.
MAX100's credibility has been brought in doubt by some allegations. See
http://glocktalk.com/forums/showthread.php?p=15929254
- Because he both sold Pardner Pumps AND manufactured and sold magazine extensions for them he had everything to gain financially from the guns promotion.
- Allegations found on Glocktalk and elsewhere amount to claims that MAX100 scammed many. He took the money for extensions, kept it, and didn't provide the product. There was some talk about contacting local law enforcement regarding this but I don't know if that ever happened or if any crime was involved.
I have been unable to confirm the existence of the "Stahl family" mentioned in the "article".