Seating and copper shavings...

Jerykho

Jerykho

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Hey Guys,

I very new to the art of reloading and was wondering if it is normal to have a small amount of copper shavings around the neck of the case after seating the bullet. I'm currently reloading Accubond for 7mm-08.

My worry is that having the bullet seated this tightly might cause a dangerous increase in pressure when firing.

Hopefully I sound like a complete newbie and have nothing to worry about. :)

Thanks in advance for any advice or feedback you may have.
 
tiriaq said:
Did you chamfer the inner edge of the case before seating?
Click to expand...

x2. By chamfering, you are removing of the sharp inside edge of the finished casing. It gives it a bit of a beveled surface to which the bullet slides neatly into upon seating.
 
Jerykho said:
Hey Guys,

I very new to the art of reloading and was wondering if it is normal to have a small amount of copper shavings around the neck of the case after seating the bullet. I'm currently reloading Accubond for 7mm-08.

My worry is that having the bullet seated this tightly might cause a dangerous increase in pressure when firing.

Hopefully I sound like a complete newbie and have nothing to worry about. :)

Thanks in advance for any advice or feedback you may have.
Click to expand...

The felows have told you about chamfering. This just means to trim out the inside of the neck a little, so the bullet will slide in easier.
An average jack knife will do to ream the neck with, until you get something better.
And quit worrying about severe pressure the way you are doing it.
 
Best hand tool for the job of chmafering is the lyman inside neck tool. It's got a more gradual angle, usually eliminates shaving. Not sure if shaving makes a huge differenc,e but I don't like it anyway...;)
 
Shaving gilding metal from the base of a bullet will not increase pressure, but it always reduces accuracy because the material is never taken off evenly around the base.

Ted
 
Why not? said:
Shaving gilding metal from the base of a bullet will not increase pressure, but it always reduces accuracy because the material is never taken off evenly around the base.

Ted
Click to expand...

X2 - exactly right, and that's from personal experience. A hand chamfer tool costs less than a 6-pack of cheap beer. Get one. I've graduated to the RCBS case prep station - what a way to cut the time off case prep!
 
Thanks Guys!
I did chamfer the edges but obviously not enough.:) I used the Lee chamfer tool. I will look into the Lymann and RCBS.
Also, from the feedback it sounds like this is not going to cause any danger wrt pressure. the next load I do, I will be sure to chamfer the edges further.
 
the only time you have to chamfer your shells is after trimming them, because this leaves really sharp edges...
I am surprised that the brass shells shave the copper bullets, this should not happen...both metals are about the same hardness...
are you sure you are not using steel sheels?
the easiest fix is to switch to boattail bullets...
 
Case neck thickness is maybe a little high. Measure your neck outside diameter after seating bullets, compare to spec, or factory cartridge.

This usually only happens after several reloading cycles, but is worth checking.
There are so many variables when reloading that a fella can have great fun while driving himself righ stark raving bonkers trying to analyze all factors!
 
A few days ago I reloaded about 50 rounds and I got the "shaving" thing too for a few rounds when I begun - I had forgotten to chamfer my cases. Doh! 5 minutes later the chamfering was done and the reloading resumed uneventfully.

Lou
 
Modern Reloading Second Edition
get a copy... explains very plainly about neck tension and bullet pull...
but like everyone else say's... chamfer away :)
 
Chamfering after trimming is a must to ensure uniform pressure.

I find that shaving is a very common event when seating TSX bullets where Barnes, Nosler and Hornday bullets rarely do.
 
I used the Lee chanfer tool with great success at stopping those copper shavings. Problem is it did very poorly at beveling the outside edge. I just bought the RCBS tool .. looking forward to testing it out tonight!
 
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