Ignoramus7288 wrote:

I have a junk steel plate approximately 1 1/4 inch thick, 40x40 inches
in size.

It is junk because it is warped, I would say, it is about 1/2 inch out
of flat. So I cannot, in good conscience, weld it to a base and call
it a welding table.

So, I thought for a while, what can I do with it?

Yesterday, I made a portable gun target plate on wheels for myself from
another steel plate. This one is 3/4 inch thick and appx. 40x40
inches, and it works great for rimfire rifles.

It made me think about this and I thought, how about I make and sell a
portable gnu target from the big plate, by welding a base on casters
underneath.

The question and concern is, what sort of liability can I potentially
be exposed to if something goes wrong. Say, a bullet ricochets and
kills a kitten a mile away, or whatever. Any comments are welcome.

Nobody will buy a target assy on casters, your market will be dirt
ranges so casters won't be of use. I recall someone here had a design
for a spring loaded popper target, perhaps plans are in the dropbox. I
recall it was made of 500AR plate, not sure your plate will hold up to
higher power rounds.