mek613,
I have a 22" bull barrel 6 TCU Contender with a Bullberry stock with a 10.5" forend. It has a Simmons 3.5x14 scope with Weaver rings and base.
As best as I can weigh it on our bathroom scale it is 8 lbs. A larger caliber would weigh less because of less steel in the barrel, also any wood stock set would vary in weight. You could also save some weight with another scope.
I think that you could get right at 7 1/4 lbs. with the right setup.