Ignoramus6213 wrote:
I was at a gun range today with a friend, shooting a 9mm hand gun.

When he was shooting, I was standing behind him, watching. After a few
shots, I realized that I may have seen a glimpse of the bullets as
they flew downrange.

I watched some more, and it did seem this way, although it was hard to
see them and the barrel flash did not clarify things.

I am wondering, if, perhaps, it is known that flying bullets of that
sort of size and speed can be actually seen.

i

If you are behind the shooter and in line or very close to the
centerline of his shots you can see the bullet as it travels.
Larger diameter is easier to see.

--
Steve W.