Greenjoytj
54 Cal.
Has a maximum velocity been tested for that would cause a PRB to loose its grip in the rifling grooves and start to skid across the lands, call it Vmax.
No doubt that a tight or loose fit of the PRB to the bore will change the potential Vmax slip point in the same barrel and rifling twist rate.
Not sure how a person would run such an experiment to test for Vmax. Maybe look at the velocity the group on target starts to show flyers or just balloons abnormally large or maybe the recovered fired patches appear more damaged or shredded than usual.
No doubt that a tight or loose fit of the PRB to the bore will change the potential Vmax slip point in the same barrel and rifling twist rate.
Not sure how a person would run such an experiment to test for Vmax. Maybe look at the velocity the group on target starts to show flyers or just balloons abnormally large or maybe the recovered fired patches appear more damaged or shredded than usual.