In that case, the BP self confines but I don't think it is capable of anything other then propagation, in the sense that it's a deflagerent, it burns and doesn't detonate. It may burn fast, displace air and even make a shockwave, but it's not even close to being a high explosive. It's simply a fuel / oxidizer mix.....
"It was mentioned BP will not explode unless confined but that is incorrect. BP has a critical mass of just over 500 pounds which means it will explode and create a shock wave with a tremendous BOOM with no confinement at all!"
"It was mentioned BP will not explode unless confined but that is incorrect. BP has a critical mass of just over 500 pounds which means it will explode and create a shock wave with a tremendous BOOM with no confinement at all!"