i have taken it to about 35 psi at the max but i want to pressure test it to 6o to see if it can take it. i will be very care ful some other ammo i have used it tiny nails they work well and pen cartrigedes act as paint balls they explode with ink evey where when they hit !!!!
also i want to make the same type of thing with a tomato sauce twist top bottle they look like they are a bit thicker plastic.
P.S. i made this type of cannon because i could not seem to get the combustion minis to work the right air fuel mix and all that.
