The target is called a "Crazy Ivan" or officialy known as a Fig.11. the mottled pattern makes it tough to see at all ranges and re-enforces the need to call ones shots.
You can scale it by the rifles on either side.
It's the same type of target that the Army uses in thier EIC matches. There is also a Fig. 12, that is half as large and is a "head and shoulders".that's not in the picture.
The scope is my trusty KOWA on the stock in trade Freeland stand, the camo jacket is a padded USMC shooting coat. We used them as a base garment for sniper smocks in Desert Storm. I had never seen desert pattern before or since, they are always OD green.
We wallpaper paste the targets to cardboard and then use washered screws to attach them to stakes and just drive them into the ground. Instant rifle range on any bit of prairie.