I don't know why you should have much shot falling out as that is not a normal part of the operation. If you put your loader inside of a tray, I use the top of a plastic bin, it usually keeps powder, shot, etc.contained. Also good if you are working on a loader and drop something.............I agree with Springmom, loading is a solitary job, ..........to tell the truth, it may be one of the reason I reload.
...................ck