RX7 in Lyman Cast Bullet Manual No. 4

[DonMountain]

What powder does RX7 refer to in Lyman Cast Bullet Manual No. 4? Is this Hercules Reloader No. 7? Or Alliant Reloader No. 7? Or something else altogether? I couldn't find any references to what RX7 powder was, but they list it in a lot of their cartridges with cast projectiles.

[tobywan45]

What powder does RX7 refer to in Lyman Cast Bullet Manual No. 4? Is this Hercules Reloader No. 7? Or Alliant Reloader No. 7? Or something else altogether? I couldn't find any references to what RX7 powder was, but they list it in a lot of their cartridges with cast projectiles.

It is Alliant Reloader 7.
They show it in the data powders as Rx7

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[JonB_in_Glencoe]

it is Reloder 7

https://www.alliantpowder.com/produc.../reloder7.aspx

[4060MAY]

Keep in mind there ar two flavors of Reloder 7 AKA RX7
the early powder has brown specks in it and supposedly less Nitroglycerin than the newer powder made in Sweden

[DonMountain]

It is Alliant Reloader 7.
They show it in the data powders as Rx7

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Could you give me a manual number and page for the list? I am working out of Lyman's Cast Bullet manual No. 4, and see the loadings listed for the cartridges using RX7, and then no references that give me the statement that RX7 = Allient Reloader 7. And I don't want to guess that is what they mean since there are a few more powders that have a number 7 in their designations. The only other reference in Lyman's manual that shows me Allient Reloader 7 is in the burn rate chart in the back of the book, but here again they don't list RX7. But they never say anywhere that RX7 is Alliant Reloader 7.

[tobywan45]

If you turn to page 151 and read the information on 30-06 then turn the page to the heavier bullets it shows the data for RX7 ( Reloader 7 )

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[tobywan45]

Also if you have Lymans 49 Edition
Page 67 under the Reloader 7 description states Reloader 7 is abbreviated as Rx7 in our data. Also used for Alliant Reloader series
10,15,19,22 and 25

By the way. Good Question

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[DonMountain]

If you turn to page 151 and read the information on 30-06 then turn the page to the heavier bullets it shows the data for RX7 ( Reloader 7 )

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Finally, I found my answer and very much appreciate everyone's help on this matter. Now I know why I have an "older" cardboard container of Hercules Reloader 7 in my powder cabinet. And a Lyman 311299 mold. And an O3A3 in the cabinet. As I recall now, that combination shoots very well in that gun. And I used to deer hunt very successfully with that combination before I moved on to newer antique rifles and IMR-4895 for about all of them. I think I need to get that combination back out and use up some of that old powder, of course, reloaded in weights according to my Lyman Cast Bullet Manual Number 3. Or was it Lyman Cast Bullet Manual Number 2? I will also look at the Lymans 49 Edition.