Kynoch .30/06
I bought some .30/06 M2 ball cartridges at a gun show this morning. Boxes are marked: "BALL CALIBRE .30 M2 LOT/K1/81/54 Manufactured at the Kynoch Factories of Imperial Chemical Industries Limited, Metals Division Witton, Birmingham, England". They are headstamped K over 54. They are loaded with 53.5 gr. of an extruded powder, 151.5 gr. FMJ flat base bullet, and are berdan primed. Are they corrosive?
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It is a very safe bet 1950's vintage military Berdan primers
are corrosive. Be safe and follow a corrosive primer cleaning procedure.
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That's good advice and, of course, that's my policy with unknown priming. But that's the reason for my question--does anybody KNOW if they are corrosive or not. 0 -
If primer is made of copper / corrosive; made of brass / non-corrosive.
I checked several other forums and came up with up with quote:
Great Britain: Imperial Metal Industries (Kynoch) Ltd. Produced cartridges in several plants, marked Kynoch or K, with the date. Changeover from corrosive to noncorrosive primers was made gradually over a number of years, and dates are not available. As a general rule, their brass primers are nonmercuric and noncorrosive, and copper primers are corrosive and mercuric. This rule is not entirely reliable, however, as a few lots of having brass primers contained corrosive composition.
Still nothing concrete.
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