Interesting looking rifles that i am sure are as rugged as it gets. I'd say what with the short barrel and 8 pound weight .30-06 is about max you'd want for calibre in one, probably perfect indeed. (They offer it in both .375 and .416 Ruger which i can only imagine being an absolute nightmare to shoot based on both physics and the real-world reviews i've read of Ruger's heavier calibre offerings.)
High quality no doubt, but not high end. The only high end laminates i'm personally aware of are from these folks:
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