Post your preferred method to remedy copper jacket shaving

[98s1lightning]

I just encountered jacket shaving with reloading 348 win and 284 win......

I haven't had this problem ever in the past. I always FL size die bumping shoulder back at least 0.003".

Someone suggested lyman "M" die. Though not available in 284 win it may be in 348 or maybe I can substitute with another close "caliber cousins" die.

I always chamfer mouth of case too.

What's your preferred method to remedy shaving copper????

 

[98s1lightning]

I end up with a copper dust deposit, real small burrs. Almost like a salt shaker puts out. Right around the top of the neck which is easily wiped away.

 

[TonyAngel]

Chamfer the case mouth a bit more maybe. I’ve just never had that problem. Is it something that just started happening with a new batch of brass?

 

[MEHavey]

Chamfer the case mouth [more]....

^^^^ THIS ^^^^

 

[forty_caliber]

The angle of your case trimmer might be at fault. My Lyman hand tool is about 30 degrees and I've seen this problem. The new Forster tool is set to just 14 degrees leaving a longer "slope" and I haven't had the problem since.

.40

 

[98s1lightning]

Ok I can try a different chamfer tool first.

I think the one I'm using is 45 degree.

 

[98s1lightning]

It's odd cuz I just had it happen on 284 with Sierra gameking bullet which is a boat tail.

 

[ballman6711]

I only load pistol, so my reply may not be appropriate for your question.

I did start to have some shavings loading 45acp jacketed bullets, and my problem was a combination of not chamfering new brass and too little flare before seating. I have since chamfered all new brass and set my expander a bit deeper and my brass/bullet shavings have stopped.

chris

 

[TonyAngel]

I do use a chamfering tool and do not rely on the trimmer to do the chamfering. I think the one I use is a Hornady and it looks like a little rocket.

 

[Texas10mm]

NOE makes a bunch of expanders that fit in a Lee Universal flare die. They are the bee's knees for things like this. I use them for loading lead bullets in 300 Blackout.

https://noebulletmolds.com/site/product-category/expanders/expander-plug-rifle

 

[98s1lightning]

Texas 10mm. NICE!!!!!!! I'll have to order me some of dem. Those do look nice and something I can afford!

 

[GW Staar]

Lyman "M" die expanders are the bee knees for me....but I don't know how many calibers they come in.

I noticed those NOE expanders have "M" style ledges too on some.

 

[edwardware]

I always chamfer mouth of case too.

Not enough. Guess how I know!

I suggest a 6x-10x loupe, doesn't have to be fancy. You'll see things you didn't know were there.

 

[GooseGestapo]

A bump of the case neck with a Lee Universal expander die will also work. Lyman doesn’t sell a cartridge specific M-die. Either a SHORT or LONG die body, and diameter specific (ie: 0.28”) expander. I’ve got both short and long bodies and .22, and .30cal expander plugs.
For 7-30Waters and 7x57Mauser I’ve used the Lee Universal Die.

 

[Walkalong]

Chamfered cases on the left, non chamfered on the right.

I suggest a 6x-10x loupe, doesn't have to be fancy. You'll see things you didn't know were there.

Yep.

From an old Projector (Showing my age)


An objective cut off an old scope

 

[FROGO207]

I use a VLD expander die. I also chamfer the inside of my necks when prepping brass as well.

 

[rg1]

All you need is a VLD 22 degree inside case neck deburr tool. It will remove all burrs left by the case trimmer. The standard 45 degree chamfer tool often just rolls the burr inward. No special dies needed. A dull deburr tool makes ir worse. Both Lyman and RCBS makes inexpensive VLD tools.
https://www.amazon.com/RCBS-VLD-Deburring-Tool-Handle/dp/B0083OG48W

 

[jmorris]

A chamber that doesn’t leave a burr usually does the trick, if it doesn’t you need a seat die that will seat the bullet straight. Only a crooked bullet can touch the sharp edge of the mouth, if the case is chamfered.

You shouldn’t need the over sized expanders if your not shooting cast bullets.

 

[Texas10mm]

Lyman "M" die expanders are the bee knees for me....but I don't know how many calibers they come in.

I noticed those NOE expanders have "M" style ledges too on some.

They all have them. It's a great system with a lot more flexibility than an M die.