Looking for some published load data for large bore AR cartridges

[jamesp81]

Specifically 450 Bushmaster, 458 SOCOM, and 50 Beowulf.

I'd like to put one together, and I'll probably choose the one that has some actual published load data using cast boolits. I have not been able to find any as of yet, does anyone know of a source?

[Misery-Whip]

Lyman has a reloading handbook for the Ar-10, and Ar-15. I think it was about $12.

Has all the calibers you mention and more, j-word data and some cast data for each caliber.

Of the 3 you mention I like the 450.

[jamesp81]

Good info. What about the 450 do you prefer to the others?

[trapper9260]

I was going to say also about the Lyman AR reloading manual also I use it for my 308 Win. and my gunsmith is the one that got it for me and did not seen one and ask to look at it and look he was going to get one himself

[dbosman]

Western has load data for the .458 Socom. Both sub and super sonic.
The have data for the Bushmaster too.