I know that there are a lot of members on this forum that have a vast warehouse of knowledge in their heads and I'm hoping one can help me out. I have a few shell holders stamped MU-#, like MU-5, MU-9 and MU-11. Without knowing the company that made the shell holder, I don't know the caliber. I've sold off a lot of my brass, so I can't test the fit with a shell casing. If you can ID the 5, 9, and 11, it would be great. Thanks in advance.
Do you still have a caliper? You might be able to measure the "groove" diameters and make a guess based on those.
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Not familiar with MU, but good cross reference charts; https://duckduckgo.com/?q=MU+shell+h...=v314-1&ia=web
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I have several Marked "MU". I was told They are Bonanza manufacture.weather that is correct or not . another source said they were very early Redding
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I dug out my Herter's catalog, and it appears that they match up with Herter brand shell holders. Issue resolved. Thanks to all for your input.
I keep my 1968 Herter's Catalog in my bookcase just for this type of thing ... Herter's shell holder numbers are unique to Herter's and no others ...they also have screw in and snap in shell holders ...Originally Posted by gwozdz
and for I.D.ing Herter Presses and the gazillion other products they sold ...it's invaluable .
Gary
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