Before I get started, I want to make it clear (so that i don't get another warning or banned from the forums 
) that I AM NOT trying to propose a new idea for a homemade nerf gun. I am trying to do some research before building one and had a question but I can't seem to find an answer through google so here it is:
About how much psi is used to propel a single stock nerf bullet around 300 fps. Are there any ways I could calculate how much psi I would need to propel a stock nerf round at a given fps myself?
Any helpful answers will be appreciated. Thanks!