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Old 04-26-2008 | 11:26 AM
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eldeguello
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Default RE: RCBS sizer die, Bad or the Brass?

ORIGINAL: Hotburn76

I just bought a few dies from RCBS, a deprimer and neck sizer die. I have been using a lee die set and have been using a Redding body die to bump the shoulder and then the FL sizer set up just a tad to just do the neck. I have 100 rounds of Hornady brass, the same brass that I made a post about a while back about getting some loose primer pockets. Well I deprime, then bump all my shoulders and then I start to neck size. I noticed right away their was not much drag at all. Took a bullet and I could shove it in the case by hand. Took the RCBS die out and put in the LEE die and it sized it fine, meaning I could not push bullet in by hand. I pulled both the sizer pins and they both measured .202 with a caliper. The hornady brass has been neck turned and I have been told that Lee dies over work brass compared to most dies. Could the Lee die have a smaller inside bore on the neck part smashing it down more then the RCBS, and the thinner necks are problem? I did notice that after I neck turned the cases they did not size near as hard. Before I turned the necks the lee die was real hard to work, even with alot of lube. Or could I have a bad RCBS die? I also bought 100 Winchester brass and neck sized a few of them. I could not push the bullet in with them, but the necks are also way out of round, they looked ok after sizing, but they must take them out of the presses with pliers, or scoop them up with coal shovels cause all the necks are bent pretty good on all of them. Sorry so long, just confused on this.
Could the Lee die have a smaller inside bore on the neck part smashing it down more then the RCBS, and the thinner necks are problem?

Could be!! Try your RCBS neck-sizing die with cases that have NOT had their necks turned. It is possible that the ones you turned are now too thin to work correctly in a sizing die that does not reduce them as much as the Lee die does...... Obviously, the problem is NOT the expander plufgs, if both are the exact same size (.202").
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