Your friend is talking about the 16 ga.Society reloading forum.A number of the people on that site are under the impression that the data is arrived at by using computers and not through actual testing.I have a copy of the manual and my only complaint is that about 90% of the loads are in either the Multi hull,which they sell,or the Fiocchi hulls.I have had very good results w/ Fiocchi hull/primer,sg-16 wad,19.5 Unique,7/8 oz # 8's.I've been using this 2 years,year round, and getting a solid 10 reloads out of the Fiocchi 16gt hull and I shoot over 4000 a year of these.
