Yes, that is correct. I have tried dry cores both pure lead and hood cores (1%? antimony), and I can't get them to work with my dies. The jackets shrink and I can't get them to come off the c.s. punch no matter how much pressure I put on them. If the cores are freshly cleaned with coleman fuel then they will come off the punch, but the stretch is less than .001 or sometimes shrinking .001-2.
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Bullet making jacket stretch
- Thread starter savet06
- Start date
I don't have that much experience, but if you reduce the amount of lube in the jackets, doesn't that help release from the C.S. punch?Yes, that is correct. I have tried dry cores both pure lead and hood cores (1%? antimony), and I can't get them to work with my dies. The jackets shrink and I can't get them to come off the c.s. punch no matter how much pressure I put on them. If the cores are freshly cleaned with coleman fuel then they will come off the punch, but the stretch is less than .001 or sometimes shrinking .001-2.
What he said.....I don't have that much experience, but if you reduce the amount of lube in the jackets, doesn't that help release from the C.S. punch?
I use .08gn of lanolin and castor oil/500 jackets. Tumble for 5 min.
Lanolin and Vaseline caused the jacket to get stuck on point up. Not really stuck. But, created a good suction and bullet would go back in die... That was when the humidity got below 30%. About January at my house.
I've read something about it. But what would be the purpose? Degrease?Mike. So you don't boil your jackets in TSP? For 10 min.
But if you suggest it, I intend to test it.
That was done.Take your point up die apart an clean the extractor pin it most likely has lube inside it sounds like it hydraulic inside
Lead oxidation. Helps the lead and copper bond. I was told by a famous bullet maker. That after he started this, his bullets took off. He got that advise from another famous bullet maker. That's what I remember....I've read something about it. But what would be the purpose? Degrease?
But if you suggest it, I intend to test it.
But, I took a bullet chucked it up. Used hack saw to cut it. Then it took 2 pairs of vise grips to split the jacket. To pull the point and seat of jacket apart. 2 soft metals were really stuck together. I was surprised. The lead core stretched a little. Waste of a good bullet. but, interesting....
Boil the jackets in TSP???????Mike. So you don't boil your jackets in TSP? For 10 min.
Oopps. Lead cores.Boil the jackets in TSP???????
I have tried everything from 0.5gr/1000 to 2.2gr/1000 of Gary Conaway's lube, and it seems that: if I have dry cores (cleaned with acetone or coleman fuel or boiling or whatever) the jackets will shrink .003 up to .001 with increasing core seat pressure, and they will not come off the punch with sizes from .2104 to .2112 up to .015 off of initial release - I would get 1 or 2 to come off the punch and then the 3rd would stick. Cleaned the c.s. die and same issue. My good friend and HOF shooter has had a similar experience with his own set of dies and pure lead or hood cores - It was somewhat vindicating when it happened to him after I spent a ton of time trying to troubleshoot this problem.I don't have that much experience, but if you reduce the amount of lube in the jackets, doesn't that help release from the C.S. punch?
I have spent a stupid amount of time and components figuring all this stuff out and, though I value experience tremendously, I would much rather have not needed to learn this lesson! My dies need lubed cores (very lightly) to get any amount of stretch.
I apologize for not including the names of the other bullet makers, but I am not sure if they would be ok with me mentioning them associated with this stuff - why would they? Not sure, but I don't want to put them out there to get associated with a problem they have never had before.
Mike
Further update: received my new dies of the same maker (1st dies were used) and with the exact same formula of jacket lube and core lube they easily stretch .004-6! The boat tail on the new bullet is visually longer and I wonder if that is part of the equation. The boat tail and lead line numbers are virtually the same as the other dies and the same punches work for the same lot of jackets and cores.
Does stretch matter? Still not completely sure, but I am going to find out!
Mike
Does stretch matter? Still not completely sure, but I am going to find out!
Mike
I was told BT stretch is .004-.006. And they should come off punch. FB base get shorter.
What you just explained seems correct. To me.
Not sure, why all the confusion from the beginning of post.....????????? Maybe, I need to re-read it....
How many bullets did you make off of the first dies????
Lowell told me, his famous dies, from around 2008. Made 10 M bullets. I still have some.......The year he retired. He made 495,000. 6 mos of still working night shift.....
What you just explained seems correct. To me.
Not sure, why all the confusion from the beginning of post.....????????? Maybe, I need to re-read it....
How many bullets did you make off of the first dies????
Lowell told me, his famous dies, from around 2008. Made 10 M bullets. I still have some.......The year he retired. He made 495,000. 6 mos of still working night shift.....
TimI was told BT stretch is .004-.006. And they should come off punch. FB base get shorter.
What you just explained seems correct. To me.
Not sure, why all the confusion from the beginning of post.....????????? Maybe, I need to re-read it....
How many bullets did you make off of the first dies????
Lowell told me, his famous dies, from around 2008. Made 10 M bullets. I still have some.......The year he retired. He made 495,000. 6 mos of still working night shift.....
Wouldn't that depend on the angle and depth of the boat tail? Or are you referring to your specific die?
Just asking, as I said, I don't have enough experience.
Could be. But, that is what I was told. And that was the range at which the jacket comes off the punch. Stretch more and you might pop a jacket. And crack a carbide die.Tim
Wouldn't that depend on the angle and depth of the boat tail? Or are you referring to your specific die?
Just asking, as I said, I don't have enough experience.
As you might have noticed some bullet makers git on here and try to help. Call a couple.
Thought we were typing about overall stretch start to finish?I just set up my core seater for 6bt there are 790 Stamoly jackets the are coming of the punch at 799 an no stretch at the lead line
Lead line. I was told to make sure a very small amount of bleed by. And to make sure it's even. That way you know the lead is concentric in jacket. And the jacket self centered. 10X loupe.
Now I hear no bleed by. How can you see if it is self centering???
I have gotten bullets before I made my own. Could not get these to shoot. 6-8" group. I started looking at them with a loupe and measuring everything. Found a little lead poking out the hole. Not everyone. Just a few. So either the punch was too small or jacket did not self center. 1000 bad bullets.