There's not much of anything to take a pic of, it's just a matter of taking just enough metal off the surface of the extractor post that's against the breech face so it's thin enough to hold the case against the breech face, it will be too thick if you don't and the extractor can't hold the rim back far enough to eliminate the excess headspace, then add a shim on the front side of the post that keeps the extractor from going too far forward so it traps the case against the breech face.
For a temp shim to experiment with this idea, I used aluminum furnace tape, but bore cleaner or oil will remove the adhesive and the shim can fall out of place, but a dab of cured epoxy on the front of the post, then filed just thin enough makes a permanent shim with no changes to the barrel. If you mess an extractor up, a new one can be bought from H&R, that's why I didn't put the epoxy in the extractor notch, although it could be removed with a file. I also wanted to see how well this new barrel shot, didn't want to return a good shooting barrel with the possibility of getting a replacement that didn't shoot as well, and I was right, it's a good shooter and I didn't have to ship it back to H&R.
Bear in mind that rim thickness varies between brass some and adjusting the shim may be necessary for different brass.
Tim
