Reloading the .50AE


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cbmax
February 10, 2013, 09:49 PM
Hi,

Does anyone here reload this cartridge. When you reload a 325 grain bullet, what measurement to you get right at the top of the brass? I am trying to determine if I have enough crimp.

Thanks!

CB

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gamestalker
February 11, 2013, 12:23 PM
I don't load the 50 AE, but if it's a rimless cartridge like 9mm, 40 cal., 45 acp, ect. than all you need for crimp is just enough to remove any belling that was used during seating, no more than that. It's for this very reason that I even hate using the word crimp when referring to rimless cartridges, because crimping is not what one should be doing. These type cases head space off the mouth, do not attain any neck tension at all from the crimp, and more crimp than is necessary to bring the mouth back to resized spec only decreases neck tension.

I don't use any mouth bell or crimp when loading rimless cartridges, never have. But I also only load with jacketed bullets, so I can get away with it by chamfering the inside of the mouth evenly to assure proper allignment and no bullet shaving during seating.

GS

cbmax
February 11, 2013, 04:46 PM
Thanks for the reply Gamestalker. I only put the smallest about of bell on the case to seat the bullet. The case walls appear straight after "crimping", however when we are talking about such small measurements, I thought I would ask others for a case mouth measurement. This can vary a little depending on the manufacturer of the brass and the bullets being used, but I thought some comparison was better than no comparison.

CB

RB98SS
February 11, 2013, 05:15 PM
I'm getting ~ .526 with 3 different cases. Starline, IMI, and nickel Speer. These are with Rainier plated 335's.

gamestalker
February 11, 2013, 05:53 PM
If you measure the case just above the base of the seated bullet, or just below the case mouth bell, that is what your case mouth should measure after closing the bell, I just can't bring myself to use the word crimp.

GS

cbmax
February 11, 2013, 08:40 PM
I also get .526 to .527. I hate the RCBS dies because you have the adjust the same die to seat as you do to crimp. Just find it very difficult to make the seating adjustment without disrupting the crimp.

CB

gamestalker
February 11, 2013, 11:14 PM
Actually you shouldn't have to disrupt the crimp setting at all on the die to change your seating depth, if that was what you were implying? And if it's the other way around, all you have to do is loosen the seating plug hold down / lock down nut, and then hold the plug in place while you thread the die in, or out more.

GS

bluetopper
February 11, 2013, 11:33 PM
Just crimp it enough so the cartridge falls freely into the chamber. Use the chamber as a cartridge guage.

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