The capability of systematically tuning electronic properties of strongly correlated electron systems is key to unraveling the mechanisms underlying the observed physics. Sr3Ru2O7 has been widely studied due to a highly correlated zero field ground state dominated by magnetic interactions giving rise to a quantum phase transition and formation of an unconventional high-field phase. Its structure consists of bilayers of RuO6 octahedra separated by SrO layers offering an ideal test case for the control of physical properties by purely structural means: isovalent Ba substitution of Sr allows for control of the RuO6 octahedra arrangements without directly affecting the electronic structure in the bilayers. Having synthesized and characterised a range of Ba doped Sr3Ru2O7 samples we require high resolution HRPD data to directly relate the physical properties to the detailed crystal structure.