Neither the savage or the marlin are a semi auto, both are bolt actions. You don't have very many choices if you want a semi auto.

Volquartsen custom, remington 597, or a ruger 10/17. You can also convert a 10/22 mag to 17hmr. I believe the Volquartsen guns are custom built rugers. I won't say for sure, but that is what they look like.

I might be missing one, but I think that is about it of auto's in 17HMR. I doubt any of them are that cheap.

You could get a savage or marlin in plain wood and heavy barrel for around 200 bucks though minus a scope. And pretty soon the savage will be out with the accutrigger. From what I understand they are not much more.

Paul