PDA

View Full Version : polishing the inside of the necks



max.burgess
04-25-2013, 05:52 AM
Do any of the shooters , long range & short range polish the inside of the case necks ?
Thanks Max

John Kielly
04-25-2013, 06:18 AM
I clean my long range case necks with 0000 steel wool on a chamber calibre bronze brush driven by a cordless screwdriver in low speed. I'm comfortable that the seating feel is more consistent that way, suggesting that the quantity & type of detritus left behind might lead to irregular performance outcomes.

bill larson
04-25-2013, 08:05 AM
I use a bronze brush on a RCBS 5 position brass prep machine.It..deburrs neck o.d/i.d...cleans primer pockets...brush neck i.d.....lube neck for bullet seating.....takes about 3 seconds total.....

abintx
04-25-2013, 10:28 AM
Do any of the shooters, long range & short range polish the inside of the case necks? Thanks Max

Polish? No. Clean? Yes. As a short range shooter I run a nylon brush, chucked in a portable drill, in and out of the neck a couple times. It only takes a few seconds.

Some shooters will polish if they weren't careful and imparted scratches by using a carbide cutting pilot when turning necks: http://www.kmshooting.com/catalog/neck-turner-tools/carbide-cutting-pilot.html . The tips are very sharp. Click on the picture for a magnified view.

I had Roger Miller at K&M Shooting remove the cutting edges on my carbide pilots for that very reason. Because of the close tolerances, it didn't take much to scratch the inside of the neck.

I just spoke with Roger on the phone and he is now offering carbide pilots without the cutting edges. They're so new, he hasn't had a chance to post the product to the site. In the past you didn't have that option if you wanted a plain carbide pilot.

Boyd Allen
04-25-2013, 02:16 PM
I know a short range Hall of Fame shooter who does not clean his necks at all. Years back he did an experiment that showed better results that way. He continues to win. I admire his practical approach.

Andy Cross
04-25-2013, 06:27 PM
Normally I just run a nylon brush in and out the neck a couple of times to clean the carbon off so that when I seat the bullet I can't feel the bullet scraping down the sides of the neck. That might not be a problem but I can't imagine it helps things either.

About every 5 to 6 reloads I immerse the cases for a couple of minutes in a solvent I have mentioned previously which freaked out many readers so I won't mention it again. But that leaves the brass looking like new inside and out darn near polished.

Andy.

max.burgess
04-26-2013, 06:06 AM
Andy Cross
I did a sirch and couldnt find any thing about your Solvent.
Thanks Max

Pete Wass
04-26-2013, 05:17 PM
If one jams their bullets and finds tune with their powder charge then cleaning necks is not important, I don't think. If one establishes their tune by exact seating depth, polishing the insides of their necks will give one a more precise seating depth, all else being equal, from my experience. It's all a question of what degree of accuracy one wants to achieve. If one wants the ultimate it comes from all those little extra things, IMHO. If one is only interested in their Agg then perhaps the extra work isn't worth doing. I often wonder just how much better the great condition readers might do with perfect ammo.

Andy Cross
04-27-2013, 05:06 AM
Andy Cross
I did a sirch and couldnt find any thing about your Solvent.
Thanks Max

They probably deleted it. I use CTC or carbon tetrachloride. It is a true solvent for carbon. Hard to get these days because it is ozone depleting but other derivatives can be used.
Andy.

Dwight
05-01-2013, 10:07 AM
Soaking in a solution of water, dawn and lemi-shine cleans them inside and out in about 3 minutes. Easy and safe.

Boyd Allen
05-01-2013, 10:24 AM
http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0CDEQFjAA&url=http%3A%2F%2Fwww.mathesongas.com%2Fpdfs%2Fmsds %2FMAT04310.pdf&ei=WyWBUeDDJsisiAL1uYHwBw&usg=AFQjCNFxGQyRbf1kQ7c7ULU0g5y-tVqwHg&sig2=QOR-sYS0FN1uG6Dpu4u5Jw&bvm=bv.45921128,d.cGE

SGJennings
05-01-2013, 12:28 PM
Polishing and cleaning are two different things.

Dan H
05-01-2013, 02:28 PM
Must be snowing in the Buckeye state today;-)

Personally I use a nylon brush attached to a cordless drill, run it in and out a couple of times = all done. No steelwool inside my case necks.

Dan

Andy Cross
05-02-2013, 06:36 PM
Polishing and cleaning are two different things.

True. Polishing means aligning the sutface molecules or polarizing the surface usually by a repeated grinding action. Cleaning is just the removal of a surface deposit from the matrix of the material.
Andy.

SGJennings
05-02-2013, 07:29 PM
Thank you, Andy. I appreciate the precision in your posts.

Larry Wilkins
05-03-2013, 06:57 PM
Start off, in that I shoot long Range and most cases are shot 18-20 times before they give up. But be that as may, I bend the last 1/4 inch of a bronze brush at a 45 deg. and insert and clean the neck, and at the same time clean down the side walls of the case. Try it and catch the burnt power inside. When looking for chrone numbers, anything might help
Great thread by all

Cheers
Larry