At some point a chronograph will be needed, especially with a new cartridge like the 6 ARC. I like magnetospeed but if your budget allows, LabRadar might be worth it over the long haul.
Many reloaders use something to clean the brass, either a vibratory or wet tumbler.
Case lube, wrenches for the dies, powder funnel, a bench to put it all on, shelves and bins.
Johnny's Reloading Bench on twitch just unpacked a RCBS Rebel kit, you can see all that came with it.
JRB, Bolt action reloading and Gavintube Ultimate reloader all have good content, tests and reviews of different equipment.
Many reloaders use something to clean the brass, either a vibratory or wet tumbler.
Case lube, wrenches for the dies, powder funnel, a bench to put it all on, shelves and bins.
Johnny's Reloading Bench on twitch just unpacked a RCBS Rebel kit, you can see all that came with it.
JRB, Bolt action reloading and Gavintube Ultimate reloader all have good content, tests and reviews of different equipment.