Don S., thanks for your comment on the lead and reference to my statement; "get the lead out". As indicated earlier in my post/comment I did indicate that the "shot" that I used was not a lead shot, but one of the commonly available alternatives. Many States now have laws about using lead shot and as a result, there are many alternative materials used for making shot. I think (hope) that most people are smart enough not to actually use lead but the commonly available alternative materials.
Bill, for you, I would suggest loading them. It is quick and easy to both do and undo. I think you will prefer the sound with loading. My experience was that it added to the musicality simply by delivering a more believable bass.