Lee Loader

Ok - I'm a newbie and have ben reloading 9mm for 8-9 months(Pro 1000) and now I'm ready to start 40 S&W. Not really sure which auto disc for starters; but I think disc A and hole 40? any help and/or comments wil be greatly appreciated. Oops - using 165 grain round nose....
Thanks,
flip

flip1921 wrote:Ok - I'm a newbie and have ben reloading 9mm for 8-9 months(Pro 1000) and now I'm ready to start 40 S&W. Not really sure which auto disc for starters; but I think disc A and hole 40? any help and/or comments wil be greatly appreciated. Oops - using 165 grain round nose....
Thanks,
flip

More info and research needed. The powder makes a big difference.

Yeah flip, it is entirely dependent on the load data for the particular bullet and powder. The cavity is chosen by math or from a chart.

The instructions for all the Lee volume measures have a chart of powders against the cavities that reflect what charge should be expected and Lee' Modern Loading has a disk selection for the loading data. All of this is based on the Volume Measured Density of a powder, with these mentioned references using an estimate for the powder. I have always determined the exact VMD for a jug or bottle of powder and used that number with the simple math to determine the disk cavity that I will use.

And always ,always , always check it against a scale .

RBHarter wrote:And always ,always , always check it against a scale .

Make smoke, not shrapnel,

Thanks gentlemen - I check the 9mm by scale and will continue with every caliber. My son-in-law is the number cruncher and ran the formulas for the 9mm. I have the Lee Modern Reloading book and study it. Is there any other publications you would recommend?
Thanks again!

RBHarter wrote:And always ,always , always check it against a scale .

Gospel truth right there !!!!

flip1921 wrote:Thanks gentlemen - I check the 9mm by scale and will continue with every caliber. My son-in-law is the number cruncher and ran the formulas for the 9mm. I have the Lee Modern Reloading book and study it. Is there any other publications you would recommend?
Thanks again!

The Lyman manual is good and if you use Hodgdon powders their annual magazine/manual is almost a must as it's updated every year.

Make smoke,

I'll second the Lyman as well .
Any extra books are good though whether from powder or bullet makers , preferably of those your using . On line maker sources are available also ,and of course apps for your phone and pad are available .

Always check 2 sources ! Typos happen . I've seen data for the same components start a grain higher and max out a grain lower .

What bullets are you using? If Speer, then I would recommend a Speer Manual, if Hornady then a Hornady manual. Each manual that I have read has some tidbit of information that the others don't. I started with Speer bullets so I generally gravitate toward those. Within the last year or so I purchased 2 books, the Lee book and the Hornady (9th edition). The Hornady book has a section in "Reloading and Bullet Accuracy" called "Firing the Cartridge". After reading a couple paragraphs in the store I had to buy the book. It goes into great detail about bullet seating and pressures. How seating a bullet too close to the lands can cause a safe round to be dangerous because of high pressure.
Most reloading manuals have detailed step by step instructions on the process. This includes common mistakes, things to watch for and what to do if things don't go right.
As others have said, having a few manuals for reference is a good thing.