November 12, 2009, 10:43 PM | #1 |
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Priming Winchester Brass
Bought some new Winchester .243 brass and I am having serious problems seating the primers. Most of the time, they only go in about 2/3 of the way. Occasionally one will seat, but the majority won't. I'm using a Lee Autoprime with the large tray and the proper seating rod. I even bought a new Autoprime and still have the same problem. I don't have any problems seating Federal or Remington brass. Has anyone seen this before?
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November 12, 2009, 10:55 PM | #2 |
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You see it all the time in military brass which is once-fired, but has the remnants of a primer crimp that has to be removed. If this is new commercial brass, it sounds like a defect. I assume you are using the same primers you did in the other cases you mentioned?
The cure is likely to be the same as the military brass. You need either a primer pocket swager or a primer profile cutting tool. The best of the former is the Dillon Super Swage 600. It is faster than anything else and has plenty of compound leverage. RCBS makes a simple press adapter, but it is not as hardy. The other option is the profile cutter on the L.E. Wilson case trimmer. It will fix your issue with style. If you have a Wilson trimmer, it is just a cutter than replaces the trim cutter. The drawback is much slower speed and turning its knob is harder on fingers. Mine get sore from turning the knurling on it after a little while. But it cuts beautiful shiney profiles.
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November 12, 2009, 10:56 PM | #3 |
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Are they Wolf primers? I have had that problem with Wolf primers. I now only use Win. primers. Other than that I don't know, maybe a bad batch of brass.
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November 14, 2009, 09:01 AM | #4 |
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Loaded countless of all brands and types, the last lot of new 222 Rem brass were 50/50 some were very hard some were OK, you might have a dodgy lot, measure some up and check, if no good seek a refund or replacement lot of brass.
Win brass is normaly pretty easy to prime, and that's been in 7mm mag, 25:06, 222, 9mm, 45, 357, 44 amd 40m and many thousands of each and probably 80% were Win brass. Of course different primers can mean different thickness in the cups, check this too. |
November 14, 2009, 10:53 AM | #5 |
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Quote: "Bought some new Winchester .243 brass and I am having serious problems seating the primers."
What brand/type of primers are you using? New, unfired Win brass? Have you tried Win primers? Was the Federal and Remington brass also new, unfired or had it been fired?
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November 15, 2009, 07:14 AM | #6 |
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Uniforming the primer pockets will eliminate that as a variable you assign to the brass. There are several hand held uniformers on the market that do a good job. I have the EJS model for both primer pocket uniformer and flash hole uniformer. It accomodates both large and small primer pockets. The black rubber cap is concealing the large cutter in the photo. Both are a one time operation and well worth it for rifle loads.
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