I got a little bored the other night and since I am currently doing an online 10 meter pellet competition I needed a little bit better of a trap. I made this out of a 5 gallon bucket, a clip board, some screws and 5 pounds of duct seal. I have not tested it with .22 and I am sure it would require about 15 pounds of duct seal but the fact that it is made from a bucket makes for a lot of room for additional duct seal. For pellets it works just fine with 5 pounds. I shoot an 800 fps pellet rifle and the pellets do not even go in beyond the tail. Also it is pretty quiet. More putty will make it even quieter as the fact that it is bucket kind of makes it sound like a drum when the pellets hit.