4070 SS

[ken s]

ken: Two things

first have you slugged the barrel, and if so what is the groove diameter
it could be anywhere from .403 to .406 groove diameter

second can you take a fired case and slide the bullet in the mouth of the case easily after deburring the mouth of the case....if not you need a bullet the diameter that will slide in the mouth of the case easily

That is what I have. I use a .410 sizer for the 410 Brooks mold. 330 RN grooved.
I expand the case to 410 and slide the bullet in. The expansion is very very small.
It just permits the bullet to go in the case, then a factory crimp die VERY slight crimp and I'm done.
For the PP, 330 Brooks mold too, I do the same, expand to 410, then slide the bullet in and crimp slightly.
The PP is patched smaller to 404 , or a little bigger with the 55W paper.
All these slide in the cleaned chamber, and eject well. I find the new chamber cleaner I bought that uses the 410 shotgun swab works very well.
Cleaning the chamber after wiping, really helped the ejecting /sticking problem
Ken