hoytaddict
Active Member
I had to pull some bullets today, but I have a question. Do I need to resize the case mouth before I try to seat another bullet?
Question: case prep after pulling bullets???
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hoytaddict
Active Member
Thanks. I used a kinetic puller (you know, the plastic hammer) so all should be good then!
Mikecr
Well-Known Member
Just check & make sure none of the mouths were dinged by a bullet whipping back up into it.
I used to get this with hammer pulling, till I got good at it.
I used to get this with hammer pulling, till I got good at it.
alf
Well-Known Member
Yes you do.
You do not have to, except if you want the cases to be uniform.
If that matters start over.
If that matters start over.
Mikecr
Well-Known Member
I don't see any value in resizing.
Tension amounts to neck springback from the expansion of bullet seating. When he pulled bullets the necks simply sprung back. And when he re-seats, the springback will grip bullets as it already had been.
What he'll notice is that re-seating force is lower, but actual bullet grip is unchanged. He could do this 100 times and nothing will change about it, because there is no further sizing in this.
Tension amounts to neck springback from the expansion of bullet seating. When he pulled bullets the necks simply sprung back. And when he re-seats, the springback will grip bullets as it already had been.
What he'll notice is that re-seating force is lower, but actual bullet grip is unchanged. He could do this 100 times and nothing will change about it, because there is no further sizing in this.
Tikkamike
Well-Known Member
It depends, was the ammo factory or your hand loads?, were the cases crimped?
I have tried shooting without re-sizing and found accuracy to be erratic. You are introducing variable neck tensions into the bullet release. Seating a bullet increases neck diameter, and pulling it does not induce enough spring back to return it to the sizer die neck diameter. For that reason, it needs to be run thru again. Re-seating without re-sizing will always feel like less tension is applied on the press.
Tikkamike
Well-Known Member
I agree. When metal is moved there is not 100% spring back, although there is enough to still hold the bullet firmly if you are using a standard die with a sizing button and not bushings
hoytaddict
Active Member
Yes I have the standard rcbs dies with the sizing plug. And the rounds in question were my loads (not factory) without a crimp
Tikkamike
Well-Known Member
Then it depends on how picky you are about neck tension. You do not HAVE to but it will more than likely yield better results to go ahead and run the through the die again. When reloading keep this rule of thumb in mind "Consistency is key, keep variables to a minimum within your control" there are about 15 billion practices you can adopt and I dont know if anyone does them all. just pick the ones you want to do as you see fit and try to do it the same every time.
Mikecr
Well-Known Member
No you guys need to do a little test;
Measure a sized neck
Measure a seated neck
Pull a bullet
Measure the neck
What you'll find is regardless of your sizing, and you can use different bushings for the test, the necks will springback no more than a few thou. That is a few thou providing your actual tension.
From there, you can re-seat bullets, pull them again, and the necks will springback exactly the same every time. Same tension.
This won't change until you actually size the necks again(either with a die, or firing).
Measure a sized neck
Measure a seated neck
Pull a bullet
Measure the neck
What you'll find is regardless of your sizing, and you can use different bushings for the test, the necks will springback no more than a few thou. That is a few thou providing your actual tension.
From there, you can re-seat bullets, pull them again, and the necks will springback exactly the same every time. Same tension.
This won't change until you actually size the necks again(either with a die, or firing).
