It's been called "cannonballing", but the gauge is a little light for that. Since a musket ball is closer to the right size, I think "musketballing" seems apropos for a wad of tobacco.
The Frank Method comes close, with its final, big, packed chunk crammed into the bowl. I've heard of musket/cannonballing ribbon, but it hasn't worked for me very well -- I only musketball flakes.
Musketballing leaves an air pocket beneath the tobacco ball and the draught hole, which seems to be an advantage of some sort, although that observation seems ripe for contention. As I see it, the ember progresses and successive tamps push it down by degrees. The wad does arrive at the bottom of the chamber toward the end, but in a drier state than if it had started out touching the bottom. The last of the tobacco burns clean and dry as a result, and dries and chars the heel so well that the pipe can be smoked again as soon as it cools.
Unlike a fold and stuff, which implies right angles, possibly with strands end-on-end, the musketball is round. (Folding and stuffing LTF is almost musketballing, because the flake strands are somewhat disorganized already.) Basically, the same thing is happening in both methods, i.e., the tobacco strands are separated to some degree and yet kept in a cohesive bundle. A musketball is fairly well broken up, more in the direction of a fully rubbed out flake, but not quite there; it's a fold and stuff run amok without quite demolishing the flake completely.
How much to use depends on the size of the flake and diameter of the chamber. Take enough to make a ball slightly larger than the chamber width; a little experimentation and practice makes estimating this pretty easy and there is no damage done if the ball is to big. It's a lot easier to start over with a musketball than a 3-stage pack and I take a mulligan a half the time. Force the ball into the chamber until it's even with the rim, pushing it down from the side ala Frank. If the draw is too tight (it's amazing how tight the musketball can be and still have a very easy draw), most times it's enough to pull some tobacco out of the center. The fit of the musketball must be fairly snug.
Another advantage to the musketball lies in its ability to hold together loose cuts, depending on whether you think mixing tobaccos is a good thing or a bad thing. Some purists want straight up, no nonsense IF. I'll take half an IF flake, a quarter of a VCF, then use those strands to wad up some 5100. The strands of a flake are like a pyromaniac's dream, a beautiful latticework that can greatly improve the burning qualities of loose cuts mixed into the bundle. For those few adventurous souls out there, an Erinmore flake, one strand of Ennerdale and some PA is a nice load.
With a little trial and error, anybody can quickly get pretty good at musketballing I would think.