Brass growing?

rci2950

rci2950

BANNED
CGN frequent flyer
EE REVOKED
EE Expired
Rating - 98.1%
52   1   0
I just came back from a session of shooting my 7mm Rem magnum, Savage 111 this evening. After i got home and cleaned up i decided to size/deprime my fired brass. I had also picked up 6 brass cases someone else fired and left on the ground. My brass is Hornady and theirs is Federal. anyway when all the brass was resized and i was at the trimming stage, i noticed my
hornady brass needed a fair amount trimmed off. Where the Federal brass needed nothing trimmed off. This is the second firing on these Hornady cases. I cant remember how much i trimmed off them the last time but i always run them though. I am using the Lee Trimmer guide and shell holder thingy. I do them by hand. Anyway why do you think my brass would need trimming and the ones i picked up off the ground didn't? Could my headspace be opened up? Is it Federal brass maybe harder? Could it be that their rifle had a tighter chamber? I am just curious.
 
Why not? said:
Because you have your resizing die set so that the shoulder of your brass is being set back slightly every time you load it. Se your die slightly higher in the press.

Ted
Click to expand...

Sorry I missed that. Good thought. It never occurred to me because I collet neck size until 4-6 firings.
 
My brass typically "grows" .003"-.005" each time it's fired, though that's not always the case. Plus, you don't know how long their brass was before they fired it the last time. It may have been shorter than what's considered "normal". I've stopped picking up brass at the range since I started reloading rifle ammunition. I don't know what it's been through, how many firing cycles, half-assed annealing, etc.
Your mileage may vary, as always.
 
It all depend on brass alloy used by manufacturer.That's one of the reasons so many of us use brass from the same lot of the same maker.Nothing strange or alarming about it.
 
You must log in or register to reply here.
Back
Top Bottom