That would require a massive amount of Beskar. It's only found in two locations, and while technically found in larger quantities than vibranium, vibranium can technically be found in locations not on Earth, as it came from space.
But damn would it survive a lot of damage. Technically weaker than Gundamium, but better against lasers, blasters, which could include beam weapons if one classified them as lasers, or not if classified as particle weapons due to using different particles. But then blasters are a hybrid of lasers.. I gotta check my notes.
Beam weapons pretty much are lightsabers, so Beskar is better, slightly, than Gundamium, without the necessary anti beam coatings or fields
