What I'm objecting to is they way in which you arrived at "likely", which was basically via the use of the Lottery paradox:
https://en.wikipedia.org/wiki/Lottery_paradox
Any specific position on the curb that you pick for a possible bullet strike is equally likely or unlikely, just as any combination of lottery numbers in a fair lottery is equally likely to win, even 1-2-3-4-5-6.
All results are equally likely in a lottery. But not in a bullet strike on a curb.
With a bullet or a bullet fragment travelling at a shallow angle, under 45 degrees relative to the horizon, a strike on the vertical face of the curb is the most likely result. The second most probable result is a strike to the top of the curb. The least likely result is a strike right on the corner of the curb.
With a lead smear being caused by a lead balancing weight mounted on the rim of a tire, it would be common for the lead smear to appear on the corner of the curb, because the rim of the tire would guide it there. It might end up strike the vertical face of the curb, if weight happened to be near the 6 o’clock position when the tire first brushed against the curb. But likely it would occur on the edge of the curb.
But we actually do know that bullets were fired and that Tague saw something hit that spot.
Tague did not see something hit that spot. He felt the sting of the fragment on his cheek and someone else noticed blood. Only then did a search for a bullet strike occur. Whatever they found, they were incline to interpret the find as a bullet strike, if at all plausible. People often spot what they expect to find.
We don't actually know that any of these "thousands of cars" rubbed the portion of its tire rim with a lead balancing weight on that particular spot.
That's an appeal to ignorance: "You can't explain what caused these marks, therefore they were caused by car tires."
That sounds like confirmation bias.
We don’t know if a car left the lead smear. But we do know that tire rims brushed against that curb. We can see the marks left on the side of the curb. And one of those marks, a curved line, points right at the lead smear.
One must not ignore those marks, even though you prefer to ignore them and simply assume that these marks have nothing to do with the lead smear, even though one of these marks points right to it.
Question: Why is the assumption that these other marks on the curb have nothing to do with the lead smear the correct assumption?
Question: Place in the order of likelihood, most probable first, the odds of the bullet striking:
• The vertical face of the curb
• The horizontal face of the curb
• The edge of the curb.
This is a simple question. Don’t try to dodge it.