Today my son discovered what happens to a 5.56 AR-15 when you inadvertently add a .300 Blackout round in a magazine mixed in with your 5.56 ammo.

Fortunately no one was hurt...except for my son's ego!

Good news is that my recently refinished/cleaned-up 1896 sporter shot like a champ... even with the dreaded nasty dark bore.

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