The interesting thing is that powder particles will leave the barrel before the bullet does. My guess is they have enough energy to squirt around the bullet be

The interesting thing is that powder particles will leave the barrel before the bullet does. My guess is they have enough energy to squirt around the bullet before the rifling can deform it and create a seal. https://www.youtube.com/watch?v=BPwdlEgLn5Q https://www.youtube.com/watch?v=BPwdlEgLn5Q