Kolpin or any other brand cases for modern rifles

[yeti12]

Hello all, Looking to see if anyone has experience with the kolpin cases for atv/utv and what size rifles will fit in them. I know a traditional stock rifle will fit but I'm wondering if there is any cases out there that can fit a prs sized rifle (24" barrel).

Or if none will fit that, if any will fit a 18" barrel rokstok tikka with a large turret modern scope.

Wanting to mount one on my adventure bike so I can ride it to go shooting if I want.