How do you know bullet 2 hit first ? I'm not convinced. If it was a stub nose or hallow tip you wouldn't know, the whole window would shatter. I think there will be more cracks then that. Most windows are shatter proof so they shatter like small spider webs all around the window. Either that or it shatters completely. That is why when someone breaks into a car you can't use a bat you need something with a small tip. Small tips with a lot of force behind it will shatter a shatter proof window. Without shatter proof the whole thing would just shatter from anything no matter wide or narrow. So a bat would shatter the whole window.

Also recoil climbs and goes side ways. Bullet number 1 looks like it would hot first then the recoils starts to climb. Bullets never ever go top to bottom .