Calverton does have backer boards, which are replaced weekly (?).
Trouble is, if you show up at the end of the cycle, before they are replaced, they are pretty ragged, so I'd plan on having some bike shop card board along.
(I keep two big pieces, sourced from bicycle shops, as 'bed liners' in the storage area of my wagon- if they aren't used as backers, they get used up pretty regularly as ground covers, sunshades, kindling, whatever)
you will need a stapler, tape or push pins (push pins are sold in the shed), Targets (also sold in the shed) and I'd advise binoculars or a spotting scope.
On a weekeday, you can likely put targets up on multiple backers so you can get more rounds down range between cease fires.
REMEMBER! Adjusting your sights is handling the rifle, and is a no-no during a cease fire.
