Thread: Action strengths

I don't really know how to ask but here goes

So lets say Bob has 2 .308's ones a Marlin the others a custom rifle. Actions a Barnard or something like that

So Bob has a load in his marlin that'll blow primers and so on, if he shot that same load through his more expensive action, will the primers still blow and what not?

I guess I'm asking does the action actually stop the pressure or not? Whats makes for a strong action and does it help with anything other than not blowing up in your face where as another rifle would with too much pressure?