Re: My new free target I built
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: KYS338</div><div class="ubbcode-body">Hitting it with 308 out past 200 you will be ok but it will dent pretty bad. 3/8 inch mild steel won't last long.
Cold rolled 1/2 inch would be as thin as I would go. Even in AR500 I like to go 1/2 or 3/4 inch thick </div></div>
Since hardness of steel seems to be worthy of note on this thread, it would serve to clear up a common misconception. "mild steel" and "cold rolled" are generic terms. Common "cold rolled" steel is no harder than "mild steel". The differentiation is in how it's manufactured. Common "mild steel" plate is actually hot rolled and the dimensions of the finished product are to a much more forgiving tolerance. "Cold rolled" steel is "hot rolled" steel formed to a final dimension by using pressure and dies in a non heated process to reach a tighter dimensional tolerance. For example, 1/2" hot rolled plate will vary in thickness and have a heavy scale on the surface. Cold rolled 1/2" plate won't have any scale and will measure exactly 1/2". Hot rolled has it's purpous where dimensional tolerance isn't that critical. Cold rolled is used where tolerance is more demanding. Hot rolled is fairly inexpensive, cold rolled due to the extra step in manufacture is more costly.
Niether one, in "mild steel", is a good choice for rifle targets unless you have access to a lot of it cheap and the ability to R&R the plates......