I have been loading a large batch of 10mm brass, most of which was fired in a Glock 20. I am resizing using a Dillon sizing die. I would estimate about 1 out of every 100 pieces of brass do not fit into an L.E. Wilson case gage after being sized. Curiously, if a piece of brass does not fit into the Wilson case gage, it will fit into a Dillon case gage about 25 percent of the time.
Even if I run these pieces of brass through the sizing die a 2nd time with the sizing die about a half turn lower, they still won't pass into the gage.
I have run some of them through Lee and Hornady sizing dies, and still they won't fit the gage.
So why would a piece of brass sized through a couple of different sizing dies still not be able to fit the case gage?
Even if I run these pieces of brass through the sizing die a 2nd time with the sizing die about a half turn lower, they still won't pass into the gage.
I have run some of them through Lee and Hornady sizing dies, and still they won't fit the gage.
So why would a piece of brass sized through a couple of different sizing dies still not be able to fit the case gage?