That's also consistent with shooting something after it's already dead. The blood has already started to coagulate and thicken which would explain no large splatter.
There is no blood pressure in the veins or arteries to to bleed off which again is constant with the reports.
You're right, the small trickle of blood is consistent with a .22 and even with that it doesn't sound like the muzzle was pressed against the skin.
Even the pressure from a .22 shell along with blood pressure of a live person, will cause blood vessels to burst and the pressure will be forced out somewhere.
You might recall there was a report he was found in his car in the WH parking lot, then the story changed.
More than likely somebody walked by his car and popped him with a .22, then the body was moved, or possibly the body was moved twice.
Popped somewhere else, moved to the WH parking lot, then moved a second time the Ft Marcy Park.
That’s how it looked to me back then.