PepperfishkittyYou'll need a tf_weapon_scattergun.txt file in your scripts folder to disable the sparks. You can get the file from the vtf crosshair thread for example. Then in the file you need to change "TracerEffect" into something else, I've mine set to "bullet_shotgun_tracer01". Should result in something like this:
https://i.imgur.com/AersGxq.jpg
You're a godsend, thanks for the help. Also, will having multiple different copies of a weapon's config file in different script folders cause conflict errors?
error? no, conflict? yes. remove all but one and edit it to your needs