Sand or Lead shot

HI everyone I'am building a audio stand out of Alum.sq.tubing for all my componets and I'am wondering what to to fill the hollow vertical tubes with sand or a combination of sand and lead shot??? does anyone have any experience with different materials.......thanks ken
Ken- Check out Star Sound products. They have a product, MicroFil (sp?), that I had very good results in my turntable stand. I had been using sand, but MicroFil did improve image focus and dynamics. Good luck.
Due to its toxicity, I wouldn't mess around with raw lead.
I've heard about coated lead or maybe it was brass shot. In any case, no sonic benifit is worth the risk of dealing with raw lead.
Using sand should suffice for audio stands. For speaker stands l would use both materials, albeit shots of various materials can and will become very costly. I don't think there will be significant improvements using shots for an audio stand. Use the money for isolation platforms or component footers. Good luck with the stand!
I agree with, and second what Jcbtubes said. I use the Micro-Bearings with great results and highly recommend them. A bit pricey but worth it. “One bearing, thinner than a human hair and smaller than a grain of sand (.0087 millimeters each), multiplied by many billions provide additional conductive mass. This increased density improves the audible(and inaudible) sound quality and performance of any equipment rack and/or loudspeaker stand by reducing detrimental vibrations.
One quart of Micro-Bearing Conductive Steel weighs in at approximately 9 pounds. Being round in shape, coupled with the extremely small size, permits the mass to become uniform in grain structure with no air pockets positioned between the bearings”.
I’m in no way associated with this product, I simply find that it works very well.
Unless you have cement sub floors, I would not bother with lead shot (even in a mix). Silica sand is a very good all-rounder and it is inexpensive. Even though it's sand you should still wear a mask or kerchief when working with it in the open.

Be certain to purchase sterile/dry "Silica" sand.
I haven't seen lead shot available in stores. Only steel shot. This is what I have used for quite some time. I think it works very well. It's not as messy as sand. Don't have to worry about it collecting moisture like sand can.
To my knowledge, all lead shot sold in the U.S. is plated with Bismuth. The risk of toxicity is minimal. Lead is most toxic when it is part of compound that can easily be absorbed by the body, such as tetraethyl lead that was once used in gasoline. The metallic form is very poorly absorbed by the body, but be cautious not to inhale any powder or fumes from molten metal. You should get the smallest size shot you can. Buy it at a gun store that sells reloading supplies.
A few comments: Sand doesn't collect moisture if it starts out dry and is in a sealed enclosure. Lead is not a health hazard unless ingested. IMO, though, sand is just fine for most damping applications. The only benefit of lead or steel is increased mass, which can be helpful but isn't always.
I endorse the use of the microfil from star sound. I have their sistrum stands with this and it makes quite a difference.
For speaker stands, it is not that critical, but for component stands, using a non-magnetic material would be a better choice. Magnetic steel has caused some strange reactions for me with my VAC 30/30 Mk. V Signature tube amp.
I purchased an attractive, manufactured steel posted stand
a while ago, and after placing my amp on the bottom shelf and listening to the system, I was shocked to hear how horrible things sounded. I had changed nothing but the stand, and it suddenly sounded worse than I could ever imagine...VERY muddy and ill-defined! I had to re-assure what I was hearing was real, so I invited several others to confirm...They agreed it sounded horrible. I then removed the rack and tried again. Back to normal like it should be!
To be on the safe side, use stainless steel, aluminum, or wood for your support pillars on stands, especially if they are close to the transformers.
Don't use either. You don't want to absorb resonance, but transfer them to the floor. I agree with all the guys who recommended Starsound's Micro-Bearnings. The difference is amazing. Call Robert over there and he'll give you the sonic scoop to what is actually (scientifically) going on. You'll be amazed. They are on to some really cutting edge things over there. I'm not a salesman. Just a very happy customer. Good luck.

I've no doubt that you are pleased with Starsound's "micro-bearing" fill but the claims made for its functional properties as something other than a damping/mass sink mechanism is complete bollocks.
A number of the conceptual theories touted in their promotions simply undermines the credibility of an otherwise well considered and effective resonance control product line.
Micro-bearing steel was chosen for the specific application of transfering resonant energy to ground. Again Sistrum was designed as a high speed transfer agent not as a slow speed blurred focus, time signature distorted ,dynamic dampening device. My advice is to try these specific devices in your own system. I have been using them for almost 3 years now and have decided this science works and will not be replaced.
Tiny amounts of lead paint dust tracked into your home from shoe soles can cause severe health problems to children.