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Posted: 9/5/2010 6:00:32 AM EDT
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im loading the vmax 55gr for my 223, and i do not need to trim, my question is... is it necessary to chamfer the cases to seat the bullet? i forgot to get a deburr tool at the gun shop yesterday... my concern is that it will not seat easily and damage the brass.
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If he's not trimming, there's no burr there to remove.
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Quoted:
I don't debur or chamfer - the brass coming off my Dillon RapidTrim has a really nice clean mouth, so the post-trim tumbling is adequate. I do, however, use a Lee Universal Flare die to open up the case mouth a tad to ease bullet entry. This makes for inconsistent neck tension, do not flair the case mouth of a rifle case even if you use a crimp because the tension will still be uneven. Even with a perfectly smooth case mouth like I get from my Hornady Nitride cutter you still need to chamfer the case mouth or it will shave metal on bullets like the 70 & 62gr Barnes TSX(and others I suppose), I tried seating them with just a smooth(no burr inside or out, just a smooth straight cut) and there where tiny flakes of copper around the case mouth when seating the TSX bullets so I got on the Trim Mate and real quick put a VLD chamfer on all the rest of the cases and no more flakes of copper when seating. |
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