Blue Brick
Member
Is there really a difference in performance or is the only difference, the label on the box?
It could be the powder is optimized to burn more completely out of short barrels to provide the velocity trick bullets need to expand, and/or perhaps develop pressures needed to operate abbreviated slides reliably?
In compact 9mms I run 115 gr, in full-size I run 147 gr. (The difference probably isn't that dramatic.)
Would ammo designed for compact handguns have sub par performance from full size handguns or carbines? Since they hit max pressure so quickly would the longer barrels have a big drag on velocity?