Barrel Slug Diameters

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Re: Barrel Slug Diameters

Postby massmanute » 20 Oct 2013 19

Ranch Dog,

Thanks for the info. I had thought that the groove diameter specified for 9mm was smaller than the groove diameter for .357. However, from the info on your drawing (9.02mm for .357) and the Wikipedia information (9.02mm for 9mm) it looks like they have the same specification, at least if the specification in Wikipedia is correct.

massmanute

P.S. How to we post a "Thank you?"
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Re: Barrel Slug Diameters

Postby Ranch Dog » 21 Oct 2013 07

massmanute wrote:Thanks for the info. I had thought that the groove diameter specified for 9mm was smaller than the groove diameter for .357. However, from the info on your drawing (9.02mm for .357) and the Wikipedia information (9.02mm for 9mm) it looks like they have the same specification, at least if the specification in Wikipedia is correct.

Yeap, they do!

massmanute wrote:P.S. How to we post a "Thank you?"

Just click on the "thumbs up" icon in the appropriate post that you wish to thank. It is in the top right of the individual post view. Notice that the thumb does not appear in your posts, only in that of others.

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Re: Barrel Slug Diameters

Postby massmanute » 25 Oct 2013 02

Now I am wondering, if the groove diameter specification is the same for 9mm and .357 then why are the cast bullet diameters different?

Thanks.

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Re: Barrel Slug Diameters

Postby Ranch Dog » 25 Oct 2013 07

massmanute wrote:Now I am wondering, if the groove diameter specification is the same for 9mm and .357 then why are the cast bullet diameters different?

They aren't for me, I shoot .357" bullets for out of my PT111. Here is the SAAMI drawing...

9mm_luger.jpg

There are two huge mistakes most bullet casters make when selecting a cast bullet for the 9mm Luger; they use a .355 or .356 bullet, and/or they use a plain base bullet.
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