That may be the case, but likely an exception and one that I would not present as a good charge (IIRC 2-pellets) and bullet. The velocity and bullet energy drop off extremely fast and you may have around only 500fpe, maybe a slight more.
I shoot long range muzzleloaders to 500yds and rarely shoot anymore at 100yds, other than to zero the scope so I can dope the further ranges, or maybe when testing bullets.
I think that if you ever ran that charge and bullet through a chronograph, then placed the necessary data into a ballistics program, you might be surprised at how little energy your charge and bullet has at 282yds. However, good luck shoot'n.