I've read Remington's product description for their "managed recoil" target loads. They claim up to 40% reduced recoil compared to other target loads. Do doubt, as others have stated, reduced recoil would come from reduced payload and velocity. Improbable, but entirely possible, that such could be achieved with average peak pressures actually being higher than heavier recoiling loads in their line. Nowhere in their product description do they mention pressure.

This company, on the other hand, does use the term "low pressure" to describe some of their product line. Can't swear to it, but I'm pretty sure I've heard they've quoted pressure averages in reponse to customer's inquiries.

http://www.rstshells.com/rst_classic_shotshells_shotshells.htm