This is my method of making 2 piece strikers.
First pic, mark center of blank for drilling
Drill about 1" deep with 5/16" bit.
My mandrel, a 3/8" steel rod with one end turned to 5/16" and a drop off for sanding purposes. This can also be made out of aluminum or wood. Or a simple one can be made using a 5/16" bolt with the head cut off.
Blank mounted on mandrel.
Turn to shape. The live center end tip is parted off and the end sanded and then finished.
Finished striker with an acrylic rod.
Marvin