Fireforming 338 LM Improved Brass

[BigKev]

I've fireformed hundred's of pieces of brass for my 6-Dasher before using the COW method but I have a new challenge at hand. I'm picking up my new 338 LM "Improved" this weekend and I wanted to fireform some brass using a small amount of pistol powder and cream of wheat with a tissue plug like I've done before, my question is has anyone done this with a "Magnum" caliber and if so how many grains of powder did you use to start things off. I realize that this could also be done with just loading bullets and shooting them but my custom dies won't be ready for several weeks and I want to get a jump on fireforming the brass. Any suggestions would be greatly appreciated.

Kevin M. King, Sr.

 

[expiper]

well....I cant giv it to you in Culver st points ...but I use aprox 55% of what the case will hold when full of Universal Clays or unique....and a plug of toilet paper ...NO cream of wheat or wax or BULLET!!!,,,Roger

 

[lynn]

Big Kev
Start out with 20 grains of unique/red dot/700X on one case only.If that doesn't work and it won't go up in 3 grain increments on a different case each time until your shoulders come out crisp.
When your all done run a stiff wire around the shoulder area on the inside of the case.The pistol powder will jam it into the corner of the shoulder and it will clump up there.
Lynn

P.S. Hey Roger good save on the Culver clicks