"Perhaps Oswald didn't know he was going to use the irons until after he fired the first shot while looking through the scope."
Really Billy Boob??...You really don't know how utterly stupid this proposed theory is??
Do you know ANYTHING about firing a rifle??
If Lee had been a sniper he would have had his rifle sighted in and on target before ever setting out on a mission....No sane person ever goes into the field on a fire mission ( be it sport hunting or military ) without knowing where the bullet will impact at a given range ( commonly 100 yards)
That's the crux of your ignorance....do you now understand?
You're assuming Oswald was both a "sniper" and "sane".
I say again, since you failed the first time... Don't simply state that I'm a dumbass. Explain how so.