Now all you need is a good frame......and Essex is a good choice. That's what I used on mine.
DON'T attempt to polish the feed ramp area on the barrel until you get a frame.
When you get the frame, attach the link pin to the barrel and frame and clamp them both into the battery position. Then, veeeeeery carefully , polish and blend them both at the same time.
Take only enough metal off the barrel feed ramp to polish it.....and don't change the angle (otherwise you take support away from the bottom of the cartridge)!
Then........carefully polish the feed ramp of the frame until you have a smooth continuous feed right into the chamber.
If you're going to use the Dremel, use a very fine grit polish.....and work very, very slowly and carefully. Remember, you can always take more metal off......but you can't add it back on.
Good Luck, & Have Fun!