chamfering/deburing?

furtaker · March 7, 2009, 03:46 PM

Any suggestions or opinions on which to do first or does it really mater. Should you do it every time, or every so often? Does it need to be done to new brass? Thanks!

rwilson452 · March 7, 2009, 04:08 PM

When you chamfer a case you deburr it. Yes, I would chamfer new brass. For brass that you haven't trimmed I would still chamfer the inside edge. It's only truly needed when you trim brass. I always trim my rifle brass after each sizing to insure a square mouth.

Quote:

chamfering/deburing?
Any suggestions or opinions on which to do first or does it really mater. Should you do it every time, or every so often? Does it need to be done to new brass? Thanks!

rrp · March 7, 2009, 04:58 PM

debur the brass after trimming and then chamfer the inside to aid in seating the bullet.

Ruger4570 · March 7, 2009, 11:52 PM

I am like the above posters. If I trim the brass I "lightly" champher the mouth and even more gently, the outside of the neck. You are not trying to see how much brass you can get off, just enough to remove any that impinges on the neck from trimming. You are "deburring" not trying to remove a lot of metal.

furtaker · March 8, 2009, 10:23 AM

I'm probably taking off to much, I do the outside first and the inside last. To the first reply I thought you debured the outside and chamfered the inside,I guess I misunderstood in my readings. Thanks!

dardascastbullets · March 8, 2009, 12:16 PM

Chamfering and deburring as far as cases are concerned carry the same function - that is to remove the burr that is created after manufacturing or trimming to length. The operation only needs to be performed on new brass or when you have trimmed to length.

You can check your chamfering/deburring operation to see if you have indeed removed all of the burr by gently running a dental pick along the inside/outside neck surface. The dental pick should glide effortlessly without any interruption. If the dental pick stops then there is still a burr remaining which indicates that your tool needs to be either reset (if it is mounted and you are feeding cases automatically) or you need to apply more force (for manual operation).

I trust that this will help you.

furtaker · March 8, 2009, 11:10 PM

Thanks!

March 7, 2009, 03:46 PM	#1
furtaker Senior Member Join Date: February 27, 2009 Posts: 117	chamfering/deburing? Any suggestions or opinions on which to do first or does it really mater. Should you do it every time, or every so often? Does it need to be done to new brass? Thanks!

March 8, 2009, 12:16 PM	#6
dardascastbullets Senior Member Join Date: July 20, 2008 Location: Essexville, MI Posts: 153	Chamfering and deburring as far as cases are concerned carry the same function - that is to remove the burr that is created after manufacturing or trimming to length. The operation only needs to be performed on new brass or when you have trimmed to length. You can check your chamfering/deburring operation to see if you have indeed removed all of the burr by gently running a dental pick along the inside/outside neck surface. The dental pick should glide effortlessly without any interruption. If the dental pick stops then there is still a burr remaining which indicates that your tool needs to be either reset (if it is mounted and you are feeding cases automatically) or you need to apply more force (for manual operation). I trust that this will help you. __________________ Matt Dardas Dardas Cast Bullets www.dardascastbullets.com

March 7, 2009, 04:58 PM	#3
rrp Senior Member Join Date: February 18, 2006 Location: west central Wi Posts: 297	debur the brass after trimming and then chamfer the inside to aid in seating the bullet.

March 7, 2009, 11:52 PM	#4
Ruger4570 Senior Member Join Date: April 3, 2005 Location: Rochester, New York Posts: 2,136	I am like the above posters. If I trim the brass I "lightly" champher the mouth and even more gently, the outside of the neck. You are not trying to see how much brass you can get off, just enough to remove any that impinges on the neck from trimming. You are "deburring" not trying to remove a lot of metal.

March 8, 2009, 10:23 AM	#5
furtaker Senior Member Join Date: February 27, 2009 Posts: 117	I'm probably taking off to much, I do the outside first and the inside last. To the first reply I thought you debured the outside and chamfered the inside,I guess I misunderstood in my readings. Thanks!

March 8, 2009, 11:10 PM	#7
furtaker Senior Member Join Date: February 27, 2009 Posts: 117	Thanks!