I had one built by Kirby that comes in at about 10 1/4 lbs with out the scope. The rifles has a # 5 Stalker barrel fluted with one of his muzzle breaks. The recoil is a bit with 300 grain bullets and I am not recoil shy, as I shoot a 416 Rem mag in Africa with out a break. If I had to do it all over, I would at the very least go with a #6 barrel fluted if weight is a concern. However, my next barrel will be a #7 fluted. The problem I have is after my shot, I lose the target or animal in my scope because of the recoil, so if you want to see the animal hit or fire a 2nd shot, it takes a few to get back on target. The rifle is not so bad with 225 bullets.
Having said that, I have made a 700 yard plus shot and took an oryx with this rifle. The rifle is very accurate.