Where can one purchase lead shot for speakers?

Hi,

I'm putting together a new system and just purchased a pair of Von Schweikert VR4jrs. They will arrive in about a week so I am trying to prepare everything for their arrival. This is the first pair of speakers that I will own that take lead shot to improve their bass. I have no idea where to even start looking for a place to purchase the shot. Can anybody tell me where I might find some? I live on the Big Island of Hawaii and I'm really hoping to be able to buy it locally as opposed to having it shipped in since it would be very costly to do so.

Thanks,

Bill