I am waiting to see where a bore guide hurts the cleaning efforts. Peace of mind in a cheap and reusable tool. Sounds logical to me!
A friend reminded me of this. Gravity will drag the jag down. Then you're dragging it across the crown continuously. And with as pivotal as crown condition can be, it's another simple part of the equation to peace of mind.
I use rod-stops too. So the jag only needs to extend far enough to let the patch fall. Yes...another piece of the equation.
