Hi guys, i'm presenting to you my new project : a hybride canon that will shoot 16mm glass BBs (kids toys ones), at 10 bars pre-pressure (~150PSI) for the first tests, and eventually, up to 300PSI Chamber will be made in steel, with a welded plug, canon will be a copper tube, 3 points flash ignitor,...

Hi guys! does anybody still have a valid link to HGDT calculator? or could put it back online? Many thanks in advance! I'm currently building an hybrid which will shoot 16mm glass bbs (kids toys ones) between mix 8 and mix 16, and I would like to have simulations of the max pressure of the chamber, ...