I'm afraid we've got that 'speaking a different (pressure) language' problem again. Rio ammo is manufactured in Spain
http://www.rioammo.com/articles.htm and the pressures reported are very likely CIP (B&P confirmed in an e-mail that the pressures they report 'have nothing to do with SAAMI')
SO it would be wise to add 400-1000 psi to the numbers they publish (pending pressure testing by someone like Armbrust) For comparison, the Winchester AA Xtra-Lite 1 oz WAAL12 at 1189 fps runs 8000 psi (by actual testing.)
BTW: the same thing applies to Fiocchi's numbers although much of their ammo is manufactured in Ozark, MO.
