The barrel in the previous image is a .30-06 with a Swaro Z6i 2-12 X 50 on top.
I have a few additional barrels in .223, .243, .300 Wby and .375 Ruger (J. Sip & Sons barrel)
Just about have the hunting world covered with that range of calibers.
I can fit up to three barrels in the carry case. One barrel packs underneath.
I have to pack the third scope in my carry on if I take three calibers. The case is made by Evolution Gear over here in Australia and has wheels at one end and a handle at the other.
Overall length of the case is at 970mm (38") long and as pictured weight is at 13.8Kg (30.5lbs)