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Are you sure you mean "key travel"? That is how deep you can press a key, in total.
I believe the Boba U4T has slightly less key travel than the norm. You could try installing O-rings under the keycaps on the keyboard with Boba U4T and see if that makes any difference, and if you like it. Bottoming out would be much softer though.
Very broadly speaking, there are three main classes of "tactile" mechanical switches:
* Highly tactile, early bump: Boba U4T, Zealio V2, Holy Panda, ...
* Highly tactile, more rounded bump: Durock T1, Cherry MX Clear (scratchy and heavy), Zealio V1 (rare these days), ...
* Slightly tactile, tiny short bump: All "Brown" switches.
Brown switches are sometimes called "scratchy linear" by people who don't think they are tactile enough.. so you are not alone there.