Why did Oswald go get his revolver?

[John Corbett]

Where I believe these little thought exercises are useful is not that we're going to figure out exactly what Oswald was thinking but that they do tend to eliminate some possibilities.

One of the more popular theories is that Oswald was heading to a rendezvous - at Jack Ruby's, at a safe house in Oak Cliff, at the Texas Theater, at the Redbird Airport. To me, it is inconceivable that "a pit stop at Beckley to grab his revolver" would have been part of any such plan. It simply makes no sense. Those who favor rendezvous theories are stuck with this scenario, but it simply makes no sense.

He realized he was a patsy and went home to get his gun for protection: OK. Far-fetched for a host of reasons, but at least not irrational.

He was astounded to find himself outside the TSBD, had no plan at all, his mind was racing, and he went home to get his revolver because it might come in handy for whatever the hell might happen next: Yes, fits pretty well, it seems to me.

The first two paragraphs imply he had accomplices for which the is zero credible evidence. The third paragraph makes perfect sense. It involves no one else.