That board is a 1x6 for sure, actual thickness is 3/4".
I have a Raven .25, 1st pistol I ever bought. Paid $65 for it. Good only for close range, no more than 10 feet. If any of you have a Raven you plan to carry, make sure the slide safety works well. Mine was not properly ground & would click on by itself when pulling from IWB holster. I fixed this by filing the safety about 1/16" or so until it seated better on the little ball bearing in the frame. Worked well then.
I don't think I ever saw .25 HP on shelves. I have seen it online. FMJ is all I have seen in stores.
Remember the American heroes of Flight 93.