Has anybody tried TRULOCK Special FEDHW #7 choke?

[ahfox16]

Looking for the Trulock choke in 870 for the Federal Heavyweights.  I've also got a big stock pile.  Have tried 3 different chokes and the best I can get is in the mid 120's.  Those chokes are the Remington SF,  The Longbeard XR choke (.568) and a Carlson's 575.

PS.  All the above shoot about the same.  They will certainly kill a gobbler at 40 yards.  However, my Nova with a Sumtoy .570 shooting the same Federal Shell gives me upper 150's.