Guns stores locally are your best source. They receive large shipments by truck and that's the cheapest type of shipping. Not to worry about lead either as it is coated. Steel shot is also a viable option. Too much lead may suck the life out of an analog system.
where to find lead shot?
I'm looking for lead shot to fill my Lovan rack. Is a gun shop the best source? Sand blasting maybe? How about online? Where do you get your lead shot?