Parallax issues - SIG SAUER TANGO-MSR 1-10x26mm Rifle Scope, 34mm Tube, First Focal Plane (FFP)

I was wondering how anyone could make a 10x scope work with no parallax adjustment, and if this example is any indication, they can't. Even at 100 yards, which is supposed to be the pre-set parallax range, I can't get both the reticle and target in focus. At longer ranges it only gets worse. I do plan to contact Sig to see if they will take the scope back and see if there is a problem with mine, and if so and they can rectify the issue I will change my rating. As of now, though, this is easily the worst scope I own, and do own a few lower-end scopes (Vortex Strike Eagle, Bushnell AR Optics, Vortex Diamondback) so that is not saying much.