I got one now but it's small I put blocks around it so it won't tip over.How much does the 30 cal can hold?Hey Rick! I used an ammo can (30 cal.) for quite a while and then found a metal tube with a flange base - which I consider safer. I'm not putting ammo cans down by any means but just be careful about hitting the lid and causing it to tip over. I think I remember someone buying a second hand slow cooker or large coffee pot and using that. Of course ammo cans are much cooler.