My point was more being on the receiving end of a directed explosion is uncomfortable, be it airbags, rocketry or firearms. Anything between you and the propel

My point was more being on the receiving end of a directed explosion is uncomfortable, be it airbags, rocketry or firearms. Anything between you and the propellant becomes a bullet. See also that couple who tried to DIY pink-or-blue fireworks for their baby shower but inadvertently maimed attendees with a gender-neutral pipe bomb. Thanks for the additional context though, I didn't know blank rounds required that much diligence.