Go straight to 11:53 and play back at 1.5 speed.
This free program distribute a mesh along a circle and you can specify:
1: The number of duplicates.
2: The scale of the duplicates. [In this video it shows how that could be used to bring the meshes together].
Currently, as far as I know the way to do that in Blender is:
1: Take a gun and load the bullets.
2: Create an empty and move the pivot of that which you want to duplicate in a circle to the empty.
3: Apply Array to the object to be duplicated.
4: Change the type from relative offset to constant offset.
5: Think in your mind how many copies you want to duplicate because you have to set the rotation of the empty manually to match up 360/number of duplicates…[retarded…]
6: Set the array count to the number of duplicates.
7: rotate the empty to the calculated angle to match.
8: Shoot yourself in the head because of the terribleness of this workflow.