You can get Ballistic Gelatine from [b]Kind & Knox[/b] or from [b]The Vyse Gelatin Co.[/b]. The Vyse gelatin is 66% cheaper, but according to Firearmstactical.com its not as clear. ([url]http://www.firearmstactical.com/tacticalbriefs/volume4/number2/toc.htm[/url]).
Here is how to Mix the Vyse Gelatine:
[url]http://www.vyse.com/gelatin_for_ballistic_testing.htm[/url]
Here is a simplified procedure for the Knox product:[url]http://www.firearmstactical.com/tacticalbriefs/volume3/number2/article1.htm[/url]
About halfway down this page is the procedure to calibrate the Gelatine:
[url]http://www.firearmstactical.com/briefs9.htm[/url]
Here is the FBI handgun round test procedure:
[url]http://www.vyse.com/FBI%20PENETRATION%20TESTING.htm[/url]
After reading this you will get a real appreciation for the time, money, and effort that Tatjana and Brouhaha put in to do their tests for the board.
Dr. Roberts has indicated on other boards you can use water to conduct tests onrounds for penetration and expansion. Though the expansion would be 'optimal' and now what you would really expect. IIRC in water you would get 2x what the real penetration would be.
Ok I looked up the Dr Roberts quotes:
Water is a good test medium to assess bullet upset; many crime labs use water recovery tanks for that purpose. Be aware that water generally reveals the maximum upset which can occur to a projectile in soft tissue—your actual result in living tissue may be somewhat less. ....
Remember that the bullets will penetrate up to 2 times farther in water, so make sure your recovery tank is has sufficient length to capture the bullet you intend to shoot. ....
Typically results are 1.6 to 2 times as far in water as in tissue or 10% gelatin.
View Quote
BTW if you look at the briefs on FirearmsTactical.com you will find one for testing handgun bullets using water filled paper milk cartons (IIRC they mention you'll need about 30). There is also an old SWAT magazine article on building a 'Fackler Box' to test handgun rounds in water - you can download the back issue from the website (www.swatmag.com) for $5 (I did - it should make a good summer project).