Targets

[Rick500]

check out what a 270 mag did to my SASS practice gong!

[ArizonaGunOwners.com]

[SP0One]

How thick is the plate?

[coelacanth]

What range?  What steel? 

[delta6]

Most all SASS targets are T1 plate. It is much cheaper ($) than AR500, about 1/2 the Brinell of AR500 and is only suitable for standard velocity handguns and lead shot shells. Most magnum handgun and most rifle cartridges, if they do not punch a hole, will generally create a fairly large dimple or crater.
T1 is easy to weld, so you can weld up the hole, but relegate the target to standard handgun cartridges (velocities) only.

[ArizonaGunOwners.com]