Don't know about the detach mag stocks, never had one. But look at the action spacing and look at stock makers.
The weight question nobody can answer, except you.
Personally, I can't see weight being an issue for anyone who is not somehow disabled, and wants to be outdoors. I walk sections(1 square mile) at a time hunting in this country, I carry my 308 with me. That rifle is 19.6#. Empirically it is heavy, but I don't see it as a "problem" to pack it around the hills at those distances. That may or may not align with your sensibilities, but like recoil; it's individual.
Boyds stocks are very durable. B&C Duramaxx stocks are durable and light, if you don't mind plastic.
Best wishes
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