I slugged some of my 9mm barrels, and they're about .356
It is hard to be sure because I am using calipers to measure the rough looking lead sinker after I pounded it through the barrel, but I think .356 is pretty close.
These Berry's double struck plated 125 grain HP bullets are consistently .357
So I'm wondering... How much room for measuring error do I have if I want to shoot a few test rounds in my 9mm Glocks, Berettas, and Hi Powers? What if the barrels are actually .355 and I try to stuff a .357 bullet in them?
It is hard to be sure because I am using calipers to measure the rough looking lead sinker after I pounded it through the barrel, but I think .356 is pretty close.
These Berry's double struck plated 125 grain HP bullets are consistently .357
So I'm wondering... How much room for measuring error do I have if I want to shoot a few test rounds in my 9mm Glocks, Berettas, and Hi Powers? What if the barrels are actually .355 and I try to stuff a .357 bullet in them?