Thanks, BoomLover!
The 4th of July and much more. These little barrels perform very well. Years ago, a good Customer asked me to cut a 1/16 diameter fuse hole in an M-BPFC (firecracker launcher) for him. He took pictures at night of 2 identical barrels, only one with 1/8 hole and the one with 1/16 hole. The differance was amazing. The energy coming out the 1/6 hole was a mere fraction. Since then, all of our smaller barrels have had reduced vent hole diameters.
Michael