As the other responder mentioned, you need to dig out your trusty ole calculator since the amount of powder is dependent upon the type and the load recipe you use. Then there is the question of how much you want on hand for replinishing what you are shooting.
This is a tremendous amount of reloading unless you have a very capable progressive press. If you are using a single stage or turret press, you are in for hours and hours of fun. I will caution anyone with a large reloading task to be careful. After hours of it, you are subject to becoming lax in your attention to details and also may not do as much double checking loads as you should. It can be similar to what happens to you while driving long distance. Take breaks and stay alert.
