I just wanted to do a follow up on this thread after going through the target selection process. I ended up with three 10" round, Steel Challenge types of targets and two 2/3 IPSC style targets. All of the targets that I bought are made from 3/8" AR500. I have a favorites folder now titled AR500 and it has 9 links in it for vendors of targets.
After all of the research and study I ended up buying from Arntzen Targets out of Rockford, IL. They are not a Johny come lately and have been in the target business since 1989. The pricing was very competitive and the product is top notch. Check out the website if you like:
http://www.arntzentargets.com/index.htm Please note, that I have no business relationship with this company besides being a satisfied customer. I spoke to the owner and felt very comfortable working with Arntzen targets. They have some cool videos on YouTube.
If you are just starting your search for places to buy quality steel there are many out there: Action Target, Arntzen Targets, Grizzly, JC Steel Targets, MGM, Redstitch and Shoot Steel are some of the places that I investigated. Google these other sites since there is much to learn. I think that they all have some thing valuable to bring to the table.
I didn't buy target stands and am now working on my own. More to follow on these. I also did a nice search on what paint to use. Bottom line on the paint was the cheapest isn't a value since it's so thin that it runs and you have to use more of it. Ended up buying Rust-Oleum 2X Ultra Cover in Primer for the first coats and White Flat for touch ups.
Any other steel target information that you would like to share, feel free to post it here.
Thanks