The round 6" steel target is a  challenge.
 
We use a water bath precision plasma cutter to cut all of our metal targets. The handgun target mounting holes are designed for 5/16 inch carriage bolts. 

Our holder for this target plate is our plate rack. It takes six plates to fully populate the rack. Other rack plate styles are available such as bowling pins, octagons,, squares and pepper poppers.

Other target product information can be found on the 'Handgun Target - Homepage'