Sorry for the belated reply I have been super busy.
Ok, I am no professional I just wonder then tinker and enjoy the process. Well I found Joe phone number on a website and ordered one of his 54 caliber coning tools after a nice chat with him. If the images appear this is the way the coning tool came.
The first thing I did was shoot my gun of the bench with no vice at 3 targets with 3 shots at each and I saved the best group which measured 1.492” pictured below.
Next I filed the muzzle of my gun to finish what someone attempted before me. Here is the before and after pictures.
After the file work I shot the gun again the same exact way with the best group being 1.39”. The accuracy stayed consistent but my point of impact changed as seen below.
Next I used Joe’s coning tool which was very easy to use and coned my rifle tight so I had to push hard with my thumb to seat the ball and headed to the range in the same way I had before with the group below being the best at .644”. I will mention that the point of impact not only changed again but almost back to where the rifle started, most likely due to my filing job.
Below is a picture of the coning before I shot it so you can see how deep it goes down the bore. The line you see part way down is a lube line were the ball stops with thumb pressure.
So it was mentioned by David58 about hard loading at the bottom of the cone and I experienced that as well , it was harder than normal and I can only think the recommended 400 grit sand paper finish was not as smooth as my old rifling, which gave my patches small cut marks like a new gun. I ran a scotch brite pad on a 50 cal jag down to smooth the cone and this helped but only for a short time before the patches would tare more with fouling on loading. Another thing I noticed was the patches were very dark all over and I think it is due to gas cutting by the patch in the cone but I do not know. The first picture below is a patch from my unaltered rifle, the second picture is three patches top to bottom first shots from cone, shots after scotch brite and heavy fouled shots at the end.
Over all I like the Joe Woods tool and the concept in its function but this is probably not for everyone.
Pete