I posted not too long ago in the gunsmith section saying how I was having accuracy issues and saw that I had nicks in my sharp crown. Here are the accuracy results after I removed the barrel and recrowned/chamfered the muzzle.

These results were shot at 200 yards off the bench using a 20x scope. These results are showing that I have darn near 1/2 MOA of accuracy with two different bullets. This would be shots within a 1" diameter circle. 

I've also included a pic of the lube star on the muzzle which now shows a symmetrical shape. In my old post you can somewhat see the shadow of it not being symmetrical and kind of smudged at 6 oclock where I had the nicks.

Maybe I'll do a bit better now during competitions! No magic bullet here but lots of various things that were tweaked for the hoped for good results.

I would say you now have no excuses for missed shots.  Would take all the fun out of it for me, as I like to blame the gun, the load, conditions, etc.  It is never my poor performance! Great groups.  Oldwyo

JLouis wrote on Apr 8^th, 2022 at 6:20pm:


Thanks for the compliments John!

I removed about 0.030" off the face of the muzzle before it looked like I cleaned up all the nicks. I did the light chamfer after that and did not use fine grit paper or anything else touch it.

I really just take it slow with things and am real patient in getting things lined up the way I want them. I also practice on scrap before I attempt the real thing. I'm self taught and still learning. I try and get as much advice as possible and then I weigh and choose what I think will give the best results.

For redoing the chamfer on my Hepburn I think I might try what others have suggested, i.e., the chamfer cutting tools. I think the type that utilizes a tight fitting reamer pilot would be best. If I don't see an improvement I can always remove the barrel and cut it in the lathe.

Well done. I, too, have seen improvement(s) with a new crown on several rifles. 
It's the little things.