I have some load data from Ramshot #3 showing load data for 40SW using Ramshot Enforcer (AA4100). The data has 165gr pills moving 1300+fps from a 4" barrel with a pressure of 31Kpsi (SAAMI 40SW MAP is 35Kpsi). I'm wondering what everyone thinks about running a 40SW that fast.
It depends on whether that particular model's barrel has a fully supported chamber and to a degree, its reputation for long term durability. I personally would consider a heavier than standard recoil spring, I'd start 1/2 grain below the max load and (you probably already know this) and would not load them in anything except new, probably Federal, brass.
Proceed with care and keep us posted.
