Checking run-out of once fired 7WSM load

Desert Fox

Handloader
Aug 14, 2006
1,965
3
I have only 10 rounds of once fired WW brass for my 7 WSM from my last trip to the range. As you all know I'm still in a load development stage for this cartridge. Besides, I want to check the consistency of the Winchester brass, so I decided to re-load all 10.

I did the usual brass prep by running the brass through RCBS full length sizer die, trimmed the brass, turned neck to removed high spot, primed and charged the case with powder. I seated the bullet using Wilson die and my K&M Arbor press. I measured the first two round using my Holland concentricity gauge. The third round were from a batch of virgin brass to be fire-formed. I inserted it just for comparison sake. Most of these load measured between .003-.005. The fourth one, although measured around .003, was the worst of the 10. The rest measured between .001 - .002. Sorry for the camera movement, it was hard to hold the camera while turning the round at the same time. Enjoy!

http://www.youtube.com/watch?v=W5rVxBEmRSE
 
That is pretty impressive. Good consistency, and that is good to see in a "cheaper" brass.
 
DrMike":25ypkdch said:
That is pretty impressive. Good consistency, and that is good to see in a "cheaper" brass.
I did have to clean the neck quite a bit.

DSC01577.jpg

DSC01578.jpg
 
Good to see those "cheap" WW cases are decent DF. I am pretty sure that is what I will be using for the 7WSM once it gets here. Scotty
 
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