In regards to brittle metal and cold temps, this subject came up this last week, when we were doing the cold weather shoot.
My friend made a point to mention that AR-500 target steel, when shot in sub zero temps, at close range, is quite brittle and will shatter.
We were engaging steel rifle targets, but they were more than 100 yards out, and it was a non issue.
Your post reminded me of his admonition about brittle AR-500, so I figured I would comment about such and hopefully save someone an expensive target.
I don't have a listing for AR500, but high strength spring steels are generally recommended to not go much below 0°F. Nickel alloys and stainless can go much lower, but the hard stuff is really expensive.
Reminds me I owe Sandcritter for a steel target I shot with a .300 Weatherby. It bent it
