Crowning a worn muzzle

[ewall]

[QUOTE=painter777;493256]IS the front edge of the Crown dinged up ? If so how badly ?
I'm having a hard time following your description.

As stated above it really takes shooting @ 100 yards to measure the effect of outer crown damage.

Pictures would help.
I've seen complete Counter Bores that made no or very little impact.

I have a S'G' shooter with a BA Blue Sky barrel that swallows a M2 round to the brass.
The following are the results from our very first outing together.

https://www.milsurps.com/images/impo...kvdwbybd-1.jpg

Using this board as an example of my sight picture and my first hold:

https://www.milsurps.com/images/impo...ipnaozp0-1.jpg

Results with that hold at 25 yrd at a 8" plate with 2" bullseye:

https://www.milsurps.com/images/impo...e509zha9-1.jpg

50 yrds @ a 8" plate but now a 3" bullseye. On the last target #3 (left one) I lowered my hold:

https://www.milsurps.com/images/impo...l8ojeos3-1.jpg

For my last hold position for target 3- far left one, I had the Black diamond just setting on top of the sight blade. The ole golf ball on the tee position. A few weeks later after swapping recoil plates, getting a better barrel hang and a little lower hold, along with a windage click or two I was able to tighten it up by maybe 30%. Getting 8-9 of 15 in the 3" bull from 50 yards. Never tried 100 yrds, but I'm happy with it for a $400 purchase sight unseen. More below about that day:

https://www.milsurps.com/showthread.php?t=61219

Good Luck ewall [/QUOTE

The wear seems to be from the steel cleaning rods. The rifling at the crown is visibly worn.