Technician1002 wrote:By nature, a QEV is an avalanche type valve. Expecting it to suddenly close before the chamber has mostly emptied is a pipe dream.
It's entirely possible. It's been done.
Take almost any of Brian the Brain's recent cannons. His Brass T-Bolt, Lupara, Bad to the bone... which all use hammer valve piloted QEVs for multiple shots from the same chamber.
Hotwired has also demonstrated a similar effect via a different method of partially venting the pilot volume. He can also get multiple shots from the same chamber.
I do generally have some idea of what I'm talking about.