Excuse my ignorance, but my question is, how much room inside the case of a HV .22LR can accommodate extra powder?
The reason I ask this because I know CCI has to use a longer case with shorter bullet to increase powder charge in their Stinger. Seems there's not enough room to double charge a HV .22LR.
Assuming there's enough room to take a double charge, what's the chamber pressure range of a "double" charged .22LR?