IMHO the fear of exploding tubular magazines is way over blown, much like rimfire unreliability but that's another story. A few years ago (20+?) Shooters Bible, Guns Digest or some such did a story of trying to get a tubular mag, to explode. I won't try to share any info from it as I don't have it available and due to age and faulty memory. As I recall very informative and worth the effort of finding if you love lever actions. Much of caution of expolding mag tubes come from the days of people loading 30-40 Kreg bullets into 30-30 cases. Defiantly more recoil from a 30-30 than 9X19.
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In today's "let's sue em till the cow come home" world, especially in the firearms industry, if Tayor's not worried about it then I'm not. I would still pay attention to what bullets I used for reloads, but then what to hell do I know.