I bought a bag of rubber mulch from Sam's for $7 or $8 & filled a 6 gallon bucket. I cut a square hole on the lid & put card board inside before I put the lid on to hold the rubber in. I hung it on the wall with a bracket & a bunji cord. I found the first 4 45 acp bullets 12 to 14 inches deep. I loaded these for target shooting, so they're kinda light. It was easy.