I have taken a previously fired casing from my 30-30 Winchester, de-primed then checked for proper case lenght, cut two very thin slots partially down the neck, manually pushed in a new bullet knowing it was not far enough in, then chambered the round in my rifle to see how far the bullet would seat. After removing the cartridge from the rifle I can see quite a gap from the end of the casing to the crimp ring on the bullet. (See picture below) The oal of this seated sample is 2.570". This is using the Missouri Cast 135gr. RFNP. Should I be crimping at the crimp ring on the cast bullet or using the oal I get seating this dummy cartridge? All the reading I have done has me a bit confused. Any help appreciated. Thanks...