i remember during my hoarding stage about 10 yrs ago'ish I bought two 100-pack deals or something crazy. And I rarely shoot the ole 91. Having a shitpile of mags does come in useful for mg shoots though - pre load those suckers and GTG.
Nothing warms my frigid heart like boxes of full -up mags being hauled out to my line spot. Esp if it requires a dolly.