This is one I found on AT. I plan on building one like it in the spring.
build my target from 1" x48"x48" High Density Fiber Board
I cut them into 24" or 16" strips (target depth)
I just built this one
This is the 20 yd shot from my lower deck.
This is a close up of the target
This is what it looks like from inside my unfinished den (about 24 yds)
I just have to open the window to shoot (winter shooting)
I shoot ACE"s at 280+ and they penetrate no more than 8 to 10" on my 11 year old butts.
I buy this material from a wholesale supply house
It is called HDWF (High Density Wood Fiber)
It is actually a roofing insulation material
1" X 48" x 48" for $7.34 each
I t may come in 4x8 ?? I always get it 4x4
My 2 personal range targets have been in service for 11 years now and I haven"t had to restack, re-compress or anything. They are 24" deep.
I do spray them with insecticide every spring to keep the critters our.