|
Two Separate Issues
First, you need to look at your seater plug. My set has a plug for round nose and one for hollow point or flat point bullets. Make sure you are using the correct seater plug for your bullet. Also you may find that if you seat in one operation and crimp in another, the ring (dent in bullet) will not appear. You can search the forum and find many examples of specifics on the setup.
Second, proper crimping techniques and when to crimp are learned with experience. I am not an expert by any stretch, but I know what works for me. For my 9mm Glock, (I am shooting a plated bullet) I like to just iron out the bell - a taper crimp. A lead bullet may need a roll crimp applied (especially larger caliber pistols to prevent bullet creep).
Hopefully you can do a little research and find the relationship between overcrimping and excess pressure.
|