What are you trying to accomplish at 1000+ yds? Is it to spot your hits for normal target practice? Just ring still for a fun afternoon? Or are you honing your hunting skills to take game at 1000 yds?
I have seen a lot of videos with guys ringing steel at 1000 yds. The targets they are shooting appear to be very large. My goal is to hunt at 1000 plus yds, so my targets reflect the max size of the game I intend to hunt. I own four 12" square plates and two 16x24 inch rectangle plates that hang from a swingset-type of setup. All are AR500 steel. I tend to shoot at targets that are the same size or slightly smaller than the kill zone of the animal I tend to hunt (deer, sheep, antelope 12x12); (elk 16x24). When I can ring them consistently at a certain distance, then I feel comfortable taking the shot at live game.
jcvibby is a member on this site and he runs speciales every now and then:
***JC Steel Targets AR500 Holiday Group Buy***
Shipping is reasonable as he uses USPS pkgs (if it fits - it ships). This limits the size and number he can ship, but not the weight. Good man to deal with.