Powder Measure
The amount of powder you put into a cartridge demands critical attention. Make a shelf over your reloading bench on which you can mount your powder scale at eye level. This will also give you a convenient place to mount your powder measure and store your reference books.
Case Cleaning
Brass cases must be cleaned and decapped before reloading. Take a small electric motor that you can mount to the workbench, add an inexpensive drill chuck and a brass bore brush. Clean the inside of the cartridge as you press it on the brush. Let it spin while you clean the outside with a soft cloth and mild buffing compound. Don't use a product with ammonia because it can weaken the brass.
Chamber Casting
If a reloaded cartridge does not fit well, you might have to make a cast of the chamber to determine the problem. If you heat the barrel with hot water before pouring in the casting material, it will slow the curing process and allow air bubbles to dissipate. Tightly patch a cleaning rod and insert it all the way to the chamber. Now you just tap the end of the rod to release the cast.