Chamber issue causing clickers?

[Phys86]

Doesn’t have to be tight, you want it loose. The centrifugal force will spin the sandpaper outward “honing” the chamber walls evenly.

This chamber was cut by Clay Spencer and trust me, I would never touched it had I not had a VERY prominent gunsmith explaining how to achieve the results I wanted. (Lapua brass)

I've got a few additional questions if you don't mind answering them:

Does rpm matter?
Do you need to put any different finish on after the 320 grit?
How far into the chamber do you go? Would measuring with standard calipers be sufficient to measure progress?

 

[ckaberna]

I've got a few additional questions if you don't mind answering them:

Does rpm matter?
Do you need to put any different finish on after the 320 grit?
How far into the chamber do you go? Would measuring with standard calipers be sufficient to measure progress?

I used setting 2 on a dewalt cordless drill I can try to get rpms but I wouldn’t think it’s that critical.
I didn’t go a finer finish 320 produced a good crosshatch pattern I was after
I probably got the rear 1/2 of chamber but didn’t get close to throat area. Main thing is while tool is rotating keep it moving back and forth so you don’t create a step. It takes more than you think with this grit.
im not sure on the calipers, I assume you could but I used Starrett small hole gauges and a micrometer.
This is a crude method compared to normal chambering but absent of rechambering not sure how else to do it. Worked for me on this rifle.

 

[INTJ]

Must be difficult to keep even pressure on the entire circumference no? I'm very handy with a cordless drill, but this is something I could see being easy to oblong the chamber by favoring a side too much.

It's better done in a lathe, though you can still take out too much

 

[Field_2_Fork]

Some great info here, thanks everyone. You've given me a few things to think about. I've done a lot of reading about clickers, and don't ever remember seeing the dowel/sand paper trick.