We just went through this. Please, please, please, don't spread this urban legend or nonsense or ignorance anymore.

It's in a thread on this forum somewhere. The manuals most refer to are the older Speer. Folks try to malign them because they didn't post pressure data in them. Of course the picture of pressure equipment in their lab means nothing. Or it means that they were confused and spent money on equipment that they never used.

I called Speer and spoke to someone that had been fed the company line and was told to spread it to folks that called. When confronted with the Speer #6 with pressure data in it, he was faced with a personal dilemma, believe the company line (while having logical evidence to prove it wrong) or do some investigation and find the truth. Being a man of some integrity, he chose the latter and found that yes, the testing equipment was used for all of the load testing.

Don't believe me though, call Speer and talk to Coy in technical service. Ask specifically about the Speer #6 and his opinion (read knowledge) about subsequent manuals.