Thanks for the thumbs up. I will give that a try. I'm new to 22 target shooting as you can tell. I just used to load up and shoot. My 512 did just fine and was pretty accurate with the HV ammo I was feeding it.
Here's a crown that needs touching. The one on the right.
And one that has been touched. There seemed to be crown damage going in a bit hence the deep crown. I actually thought I was going to need to counter-bore it but in my assessment this looks OK.
This is the before.