My concern would be if the bullet doesn't stabilize and ends up spinning out of control nicking the edge of the can. It can happen with any bullet if the lead isn't adhered to the jacket. I make bullets from 22lr cases and if speed is over 3200 fps the jacket will open in mid flight. Cast bullet can have voids in them that may not be caught by the caster which will make the bullet end up being a different weight and I bet some deformation of the bullet when it is shot which will effect how the bullet exits the rifled part of the barrel.
Thanks for the specific answer. What is your opinion on using store bought coated lead such as bayou bullets through a can?