Now, compare the 5/35 to the 22-250. Here the difference is significantly more dramatic because the 5/35 does a far better job of trapping propellant in the case – the 22-250 has a relatively shallow shoulder angle while the 5/35 has a relatively steep shoulder angle (the elliptical design is also a better trap than the conical design, even when average angle is similar). Also, with the 5/35, the propellant plug that shears out from the unignited propellant mass and thereafter begins to push the bullet into the bore is far shorter (it contains less mass) simply because the 5/35 case is far shorter than the 22-250 case. Finally, other patented characteristics of the SMc design contribute to early ignition and rapid combustion of the entire charge mass – this both improves performance and reduces amount of unburned propellant that is accelerated into the bore. As has been independently demonstrated in ballistics laboratories, the SMc is an idealized design; the superior performance shown here is a solid demonstration of this fact!