Novice reloader, loading about a year now, i was working on load development for my 7MM RM, was on low end of charge and 1 round developed 3 wrinkles just below case neck, brass was of name brand, this was the 3rd time it had been loaded, i was clocking the rounds and it was in range of the 6 rounds i speed checked, can anyone tell me why only this one case did this.
Novice reloader looking for help
- Thread starter cbk57
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cornshank
Well-Known Member
I probably would be guessing ,so I won't, but if you can post a couple of good pics , someone will probably know .
How much lube you put on that fella? Also the vent hole in your die could be plugged.
epags
Well-Known Member
Never had that happen to me so I am following this thread.
Basically zero. I tumble brass every time for that reason so it is very clean and I wipe case clean before I resize. I have shot 20 rounds after this with no problems
Oops I thought this was during resizing. My bad,
epags
Well-Known Member
I think I see a case separation crack at your thumb area. What is that black ring?
crashlanding
Well-Known Member
Something in the chamber and is it on every fired case?
crashlanding
Well-Known Member
Sorry, I reread, it was only on that case, that is very unusual
I see what you are referring to, but it is just a scratch on the case
there does not appear to be any case damage at all
This can be caused by a lack of seal at the neck and shoulder . Was this a low charge weight load? Cause because the case isn't sealing gas from the chamber, neck could also be too hard to expand all the way
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It was Hornady 162 ELDX with 7828 SSC I was halfway up the Hornady recommendation the bullets we're running at 2730
Weird stuff like this happens, especially in magnums. I usually stick to the higher end of load data, I usually take the max load reduce by 2 grains and start there and then go up above until I reach pressure. I never start at the bottom. Seems like a waste of components.
