Brownells has some kits you should look at.

Over time when you have actions in the shop It’s also a good thing to get the taps and dies for action screws because people doing self bedding jobs can get bedding material stuck to them and you need to clean them off / out by running a tap / die down them.

Get a good thread gauge so you can see if a screw is a 6-40 or 6-48... as well.

It’s fun when you have to buy both a bottom tap, and regular tap for most of your common work (scope base screws that Saddlesore mentioned).