A good way to get an idea?
Of the size of what a cartridge would be.
After shooting 80, 90, and 100 grain loads the last coouple of days I am impressed of the kick of what I thought was a "small/moderate" load. Then last night I was looking at my powder measurer, the inside diameter is .50 so it's about the size of what a .50 caliber shell would be, a bit bigger cause the plastic is thicker than brass would be but you get the idea.
Set a PowerBelt ontop of the measurer and hold it at the bottom at 100 grns. so everything above your thumb is cartridge, thats one helluva cartridge! Now increase to 150 grns. Thats a big son-of-a-b
I was kinda worried 80-90 grns. wouldn't be enough for thick skinned pigs, not anymore, even if not, 100-110-120 should knock'em on their azzez!