In my opinion there is much evidence to come. Take bullets for example. Indeed, a firearm's extractor, which is a claw shaped steel piece that grabs the casing, and it's ejector, which actually forces the casing out of the firearm, both put marks on a casing. You can google and look at pictures for examples. And the firing pin also hits the primer at the bottom of the casing and leaves a ding there too.
The other things are this....Winchester Supreme Elite ammo is kind of specific, and analysis could be done on the bullet found at the scene, and compared to the bullets in the magazines at RA's home, detailed to possibly even include type of powder and number of grains used per round....possibly even prove the bullet at the scene came from the same box as the bullets retrieved in the search.
Often a box of hollow point concealed carry ammo will hold 20 rounds, so I expect, and yeah, it's speculative, an argument might ensue thusly...9 rounds in one mag, 8 rounds in another mag, one round snatched from a box on a dresser, one round in the gun, and the final round at the scene = 20. Check out the first page of the linky
"Sealed plastic bag containing two magazines, one filled with nine .40 caiiber cartridges and one with eight.40 caiiber cartridges."
"Sealed plastic bag containing one .40 caliber S&W cartridge found inside Sig Sauer P226 handgun"
"Sealed piastic bag containing one .40 caiiber S&W cartridge found in wooden keepsake box ondresser between both closets in master bedroom."
"Sealed paper bag containing one Winchester Supreme Elite empty ammo box."
Plus the bullet found at the scene.
https://www.wishtv.com/wp-content/u...3915-FFC47C07-5DAF-414E-9879-66EEBA100263.pdf