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Old 04-04-2011, 05:49 PM
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SAAMI cartridge chamber drawing list


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While I couldn't get it to copy and paste, SAAMI.org has a new page up, that has some really nice Cartridge/chamber drawings. I hope this source helps this forum answer a few questions. I used it today to get data for my newly named Boer 10.6MM wildcat. With these drawings, a sample case reloaded in my modified Lyman 416 Rigby die set, and a micrometer, I got it together, and ordered a F.L. Die Set, from the Hornady custom desk. They already have my Boer 8 data on file, so all I had to get was the new, larger neck, diameter, dead to rights, for good bullet tension. My measurements were spot right on for the 375 Ruger co- parent, but SAAMI.org, has the newer 416 Ruger on their list, as PENDING. So no help there. FWIW, the Hornady custom desk is 15 weeks behind their orders, so I felt I had to do it this way to be able to load for a rifle that should be ready by the end of May. Any design longer than 2.6 inches, costs an extra $15.00, and since I wanted a little longer F.L. die, I specified a 2.70 inch long case. This should keep my wildcat cases out of Factory Ruger rifle chambers. With Shipping to Idaho, I'm in for $178.00 for the New Dimension two die set. Hornady was losing money due to folks putting these charges on plastic and then canceling out, later. So, now they run your card right when you order your custom dies. The conservative approach, of sending them three fired cases, would have put me off until sometime in September. I credit this new SAAMI.org page as the needed resource, to make my neck design shortcut accurate enough to get properly re-sized ammunition early this Summer. SAAMI pairs max cartridge and min chambers on the same page. Pretty handy, IMO. Although Lyman and Hornady have differing ideas on the size to, and expand back, diameters, we kept to Lyman's old 416 Rigby .436" F.L. sizer value. Only the Hornady elliptical expander, and the generic New Dimension .416 sleeve seater die, will be slightly different.
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Old 04-07-2011, 02:48 PM
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I've posted links to those SAAMI docs in a thread before, but I think it might be useful to make a separate thread with them and making it a sticky in the Ballistics forum. They contain the cartridge, chamber and test barrel drawings, as well as technical information on pressure testing.
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