I am having a little problem with the case scrapping the bullet when I seat it. I'm using 55gr vmax moly coated hornady bullets. I have redding dies. I used the RCBS deburring tool on the inside and outside of the case mouth and it still seems to scrape. what can I do?

It's going to scrape some, can't help it, but some guys polish the inside of the case neck w/ fine steel wool on an old bore brush.

Instead of just deburring the inside of the case mouth, make a visible bevel on the inside of the case mouth with your deburring tool. This should take care of most of your problem, but as fredj338 stated, you'll have a scraped bullet once in awhile.

Use a VLD chamfering tool.

I suppose a "Moly" coated bullet will scrape in any normaly sized neck. A slight bell to the case mouth, as done with lead bullets would help.

I second the VLD tool suggestion. I had the same problem with my .338wm and Partitions. Solved it by investing in a Lyman VLD tool, but I also polish bolth the outside of the case mouth and inside of the entire case neck with a nylon .338 bore brush wraped in 0000 steel wool.
The Lyman tool is available OTC at any Cabelas for under $20. You can also mail order it from any of the reloading suply stores like Midway, NSS, and the like.

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Use a VLD chamfering tool.

+1

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Originally posted by swheeler:

quote:

Use a VLD chamfering tool.

+1

+2

The regular 45 degree chamfering tools still leave a sharp enough "shoulder" on the inside of the case neck to sometimes peel off a thin layer of jacket material. The 22.5 degree VLD tool will solve this problem.

(Hint: Unscrew it from the wooden handle it comes mounted on and chuck it in a drill press. You can chamfer much more quickly and accurately this way and it doesn't wear out your wrists twisting the handle.)