I think you did good.
If he had assualted you ,you would have been good to shoot,"IMHO"!
Mag. capacity is usually not a big concern. When lead flies, cowards run.
Have you ever looked at a gun from the wrong end?
They would have said he had a .50........
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"Democracy is two wolves and a lamb voting on what is for lunch. Liberty is a well armed lamb contesting the vote" Benjamin Franklin
"Those who would give up essential liberty to purchase a little temporary safety deserve neither liberty nor safety" Benjamin Franklin