Has anyone used both the RCBS neck expander die and the Lyman M Die? I want to know which is better.
The RCBS plugs act like a mandrel and expands the neck to .001" in some cases and puts a slight flare at the the mouth.
The Lyman M Die acts like a double mandrel and expands the case neck to a certain diameter and then then expands a segment of the mouth further so the bullet will seat in it and direct the bullet straight into the case. My concern is that a cast bullet can be swaged more than desired compared to the RCBS expander plugs.
Has anyone used both and compared the groups?
The RCBS plugs act like a mandrel and expands the neck to .001" in some cases and puts a slight flare at the the mouth.
The Lyman M Die acts like a double mandrel and expands the case neck to a certain diameter and then then expands a segment of the mouth further so the bullet will seat in it and direct the bullet straight into the case. My concern is that a cast bullet can be swaged more than desired compared to the RCBS expander plugs.
Has anyone used both and compared the groups?