If you just have to become an exhibition shooter, send a gun to Bob Mundun to have him re-work and properly setup the timing etc, then practice with the gun empty until you can hold the barrel still while you are fanning. This will take 4-5 years of constant work and two or three worn out revolvers; each being re-timed several times until the frame is too battered to let the lockwork function anymore. Then you can move on to using blanks to pop ballons until you can quickly pop 5 ballons in succession from 10-12 feet. Now you can start giving exhibitions; should only take about a decade of constant practice. Now you can actually control the gun well enough so you can move on to actually firing single shots until you can get used to the recoil of actually firing a bullet this way.