I normally suggest to new reloaders to get a couple (or 4 :wink: ) reloading manuals and study the load data. Then decide on a load, (bullet, powder, primer) before they buy any components. Many fewer headaches and waiting for questions to be answered. I usually suggest starting with jacketed bullets, fewer problems and reloading is straight forward, easiest.
One way to see if your chosen load will fit your gun now, before you buy components is find the length of the cylinder of your revolver (if you don't have the gun in front of you, you can find the dimensions on the manufacturer's website) and compare to the manual's suggested OAL for the particular bullet you want to use.
A little research goes a long way...
Go slow, double check everything, and most important, have fun..