Yes, some modern .303 rimjams unless you treat it properly

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As a followup to an earlier vid (link below) where I showed that milspec .303 doesn't actually suffer rimjams / rimlock due to the design of the rim, here's some commercial ammo (S&B) that suffers it badly. And how to deal with it. As demonstrated with a very nice 1915 dated Lee-Enfield SMLE Mk.III.

Earlier vid: https://www.youtube.com/watch?v=MOYTdoQkFrM