Are the door breaching rounds with the ceramic pellets made kinda like that?
And since it's not rifled how do they get into stay accurate?
Funny you should bring that up.
Yesterday I picked up 4 boxes of breaching loads with the intent of cutting them open to see how it works.
I had even thought about making a load out of exhaust sealer because when it cures its nothing more than a ceramic chunk.
The goal here is to be able to carry one item with you in a BOB that you can make a load out of that dosn't require heat or electricity to be able to make it.
Many moons ago My Father and uncle went to a turkey shoot and got the bright idea to put STP oil treatment down the barrel of the shotgun to get the shot to stay together.
Result was, they blew the post in half and both of them were covered in burnt oil due to a loose breach on the gun.
They ended up with a new shade of skin and were disqualified without saying,lol