Nothing on the clothing. No gun powder on the clothing and from what I gather the police didn't either.
And this is an entry wound from the front, the upper arm is, you've been told about the anatomical position, the imaginary anatomic position that medical examiners' use. In autopsies, body, palms forward at attention, all measurements are done that way.
It is very rare that victims are that cooperative, so you can tell exactly what happened because the body is mobile and in this situation, if this is front anterior, the bullet came in near the top and came out the back, that's a front. In and out gunshot wound of the upper arm. This is a graze wound and I think the next one shows the controversial one.