22 wmr is higher pressure, which means higher velocity and stopping power than regular 22lr
they are plenty of reliable pistols under $300 you can throw in your glovebox/keep in your vehicle
the lifecard is really just a novelty and i would urge anyone buying it to treat it as such
you don’t want to bet your life on it. i wouldn’t bet my life on any rimfired round - they just aren’t reliable enough