Time to make the donuts....

[WSnyder]

This is the second batch of jackets I've received in this color.
Has anyone else received them like this?
I'm placing alongside some jackets in a normal color for comparison...

I could be remembering wrong but don't they look like some of the pictures of post production stress relieved/drawn back jackets by Randy R or someone that has been posted in this thread?

 

[jimmymac]

Yes

J4’s?

 

[Schippergreg]

Sierra jackets are pretty dark and dull compared to j4’s.

 

[JoeDuke]

I think back earlier in this string, Randy Robinett posted something about removing the tarnish from discolored jackets.

 

[liseo]

Sierra jackets are pretty dark and dull compared to j4’s.

I received .30 caliber Sierra and J4 jackets. Both in this caliber have the same color/appearance.(normal, not tarnish).

I think back earlier in this string, Randy Robinett posted something about removing the tarnish from discolored jackets.

Washing with a citric acid solution and detergent usually leaves then looking as usual

 

[RGRobinett]

This is the second batch of jackets I've received in this color.
Has anyone else received them like this?
I'm placing alongside some jackets in a normal color for comparison...

Liseo, get some powdered citric acid, and a large (ish) pot/kettle and fill with enough water to cover however many jackets you desire, but not cause over-flowing. Bring the water to boil and stir in 1 table spoon FULL of the citric acid, then add the jackets - less than a minute, they should look like new.
You can rinse then dry, or, submerse them in acetone, then separate from the acetone, spread on towel(s) and they'll dry pronto.

Presume those are Sierra jackets . . . maybe some Hines left-overs: needing to de-tarnish both
brands is not uncommon. RG

P.S. here's a short video link: < http://www.bibullets.com/bullet-making/ >
If this link doesn/t work, go to < http://www.bibullets.com > and way on the right hand side of the top menu, just to the right of photos/videos, click on the three dots, then click on bullet making.

 

[WSnyder]

P.S. here's a short video link: < http://www.bibullets.com/bullet-making/ >
If this link doesn/t work, go to < http://www.bibullets.com > and way on the right hand side of the top menu, just to the right of photos/videos, click on the three dots, then click on bullet making.

Ah yes, it was the video where I saw it Just re-watched and that was the picture I had stashed away in my head.

 

[jimmymac]

Finally got to a point where these appear to be worthy of testing. Want to thank @Tim Singleton ,@AlNyhus and @bichettereds for getting me this far. It is awesome that you all shared so freely with me. This is good stuff and I appreciate the coaching.

 

[AlNyhus]

Thanks, Jim. You've got a good approach to this and it will pay off nicely.

Once you get the package of prophylactics* for when (not if.. when ) you stick a bullet in the point die, you'll be ready to Rule The World.

Good shootin' -Al
* Don't carry them in your wallet.

 

[liseo]

The doubts and questions never end...

Is there a consensus on what diameter the jacket should be?
For .30 caliber, one manufacturer measures .3061X" and another, .3074X"

One more thing. Let's suppose you want to make a modification to the process (CS punch smaller or bigger, more or less pressure, etc.) and intend to test it by shooting. Do you let it rest between core seating and point up or do you perform the steps without resting between them?

 

[D Coots]

Liseo, get some powdered citric acid, and a large (ish) pot/kettle and fill with enough water to cover however many jackets you desire, but not cause over-flowing. Bring the water to boil and stir in 1 table spoon FULL of the citric acid, then add the jackets - less than a minute, they should look like new.
You can rinse then dry, or, submerse them in acetone, then separate from the acetone, spread on towel(s) and they'll dry pronto.

Presume those are Sierra jackets . . . maybe some Hines left-overs: needing to de-tarnish both
brands is not uncommon. RG

P.S. here's a short video link: < http://www.bibullets.com/bullet-making/ >
If this link doesn/t work, go to < http://www.bibullets.com > and way on the right hand side of the top menu, just to the right of photos/videos, click on the three dots, then click on bullet making.

Is the tarnished jacket just a visual issue?

 

[D Coots]

The doubts and questions never end...


One more thing. Let's suppose you want to make a modification to the process (CS punch smaller or bigger, more or less pressure, etc.) and intend to test it by shooting. Do you let it rest between core seating and point up or do you perform the steps without resting between them?

I stopped by a shooters place last month. A well known shooter. He tests bullets in his tunnel. Core seats, points up, and shoots them. If they shoot, he makes more right away.

When this guy talks, I listen.

Later

Dave

 

[rwj]

Thanks, Jim. You've got a good approach to this and it will pay off nicely.

Once you get the package of prophylactics* for when (not if.. when ) you stick a bullet in the point die, you'll be ready to Rule The World.

Good shootin' -Al
* Don't carry them in your wallet.

Making bullets is several levels deeper then I plan to travel down the rabbit hole… but I’m still interested in the process. Perhaps just a lack of my understanding the terminology, but isn’t the process of closing the jacket after seating the core called “pointing” or is there another “pointing” step to form a smaller meplat?

 

[AlNyhus]

Making bullets is several levels deeper then I plan to travel down the rabbit hole… but I’m still interested in the process. Perhaps just a lack of my understanding the terminology, but isn’t the process of closing the jacket after seating the core called “pointing” or is there another “pointing” step to form a smaller meplat?

Yes, 'pointing' is done after the core is seated.

There is another process also called 'pointing' where already made bullets have the finished bullet tips reformed, primarily to uniform the B.C. of each bullet.

Hope this helps. -Al

 

[liseo]

I stopped by a shooters place last month. A well known shooter. He tests bullets in his tunnel. Core seats, points up, and shoots them. If they shoot, he makes more right away.

When this guy talks, I listen.

Later

Dave

Dave

I understand. But it seems to me that if it rests for a few days, the diameter of the bullet tends to decrease a little.
I believe that the degree of shrinkage is due to several factors, such as the hardness and thickness of the jacket.
With this in mind, wouldn't the behavior bullet change, if fired immediately after being produced compared to one that has rested for a few days?
Just hypothetically, for the sake of discussion.

 

[D Coots]

Right, it does shrink. As to bullet behavior changing.... from what he told me he makes a batch up RIGHT AWAY after they shoot in his tunnel.

When a HOF Shooter talks....I listen.

Later

Dave

 

[RGRobinett]

Is the tarnished jacket just a visual issue?

While primarily a cosmetic issue, it IS oxidation, therefore, somewhat abrasive - don't want that running through the dies. Perhaps George Ulrich will chime in here, with better assessment of potential wear on carbide dies. RG

 

[jackieschmidt]

The doubts and questions never end...

Is there a consensus on what diameter the jacket should be?
For .30 caliber, one manufacturer measures .3061X" and another, .3074X"

One more thing. Let's suppose you want to make a modification to the process (CS punch smaller or bigger, more or less pressure, etc.) and intend to test it by shooting. Do you let it rest between core seating and point up or do you perform the steps without resting between them?

Seating cores and pointing up bullets is a rather violent action considering the way the metal is being compressed and stretched. So We let them rest for at least 24 hours after the core seat for no other reason than some really knowledgeable bullet makers say it’s a good idea.

However, I have found that the pointed up bullet stays put. I have a “master” core seated jacket and pointed up bullet that I strive to duplicate each time, and Niether has changed in over a year.

Dave Coots does make an excellent point. Regardless of the various steps you take in making your bullets, the only thing that counts is how they shoot. And just as important, you have to be able to tell the difference between a really great shooting bullet and one that is just good.

I believe in the world of custom bullet making, there are no “bad bullets”. But just like everything else involved in the extreme accuracy Disciplines, we are all looking for that magic pill that, at least in our own mind, is a cut above.

 

[rwj]

Yes, 'pointing' is done after the core is seated.

There is another process also called 'pointing' where already made bullets have the finished bullet tips reformed, primarily to uniform the B.C. of each bullet.

Hope this helps. -Al

Thanks for the explanation! Do custom bullet makers commonly perform the second pointing operation?

 

[jackieschmidt]

Thanks for the explanation! Do custom bullet makers commonly perform the second pointing operation?

The realm of true custom bullets tend to be the province of Benchrest Shooters, I doubt there are any serious Short Range Shooters that do anything to the metplate, (tip), of their bullets after it comes out of the point up die.
The reason being, the purpose ofsecondary tipping of the bullet, or closing the metplate, is to increase the BC of the bullet. That is a non factor in Short Range Benchrest. In fact, I doubt any serious Short Range Shooters would want to do anything to what is basically a perfect bullet out of his dies.

Long Range might be a different thing. Bart Sauter makes some of the finest custom long range 6mm Benchrest Bullets you can buy. Whether shooters are repointing his, or any of the other customs, I do not know.

Longer ranges out past 600 yards is a different game.

Keep in mind, I am not talking about mass produced bullets such a Bergers, Sierras, Hornadys, etc. I know several F-Class shooters that do repoint the Sierra Match Kings and Berger Hybrids. My best friend is playing around with the David Tubb 115 6MM. I think Sierra makes them and they have definetly been repointed.
They shoot pretty darned good out of his Dasher.