New Brass prep service offering.

[jackieschmidt]

View attachment 1420424
This is 308 brass I turned straight out of the box. The picture actually makes it look rough. It is almost a mirror finish. That was done on cutter speed 3 with 1 being the slowest. All 100 pieces look the same way.

Here is the inside of a fresh conventional neck turned 220 Russian. It looks smooth, because it is smooth.

 

[Acyr]

Here is the inside of a fresh conventional neck turned 220 Russian. It looks smooth, because it is smooth.View attachment 1420490

Smooth as a Ken Doll

 

[Chris Edmondson]

Something to think about. The surface finish is only relevant for the first firing after turning. subsequent firings have carbon inside the neck and is smooth as a baby butt!!!

Personal experience indicates otherwise, I found the seating roughness got worse with subsequent firings. Smoothness and it's evil twin, roughness are quantifiable using a Profilometer, a quite expensive piece of equipment, even more so if one wants to go inside a hole. I'm not saying this is the case for AutoDod, just what I managed. Using an old-fashioned visual roughness gage and an endoscope, the best I could achieve is 60-70 micro-inch Ra. The picture posted by @Acyr looks better than anything I managed.

 

[Chris Edmondson]

Here is the inside of a fresh conventional neck turned 220 Russian. It looks smooth, because it is smooth.View attachment 1420490

I agree it looks smooth, other than the naked eye, how are you vouching for it's smoothness?

 

[Dusty Stevens]

I agree it looks smooth, other than the naked eye, how are you vouching for it's smoothness?

It was drawn over a mandrel in the same direction as bullet travel. Thats pretty smooth.

 

[Chris Edmondson]

It was drawn over a mandrel in the same direction as bullet travel. Thats pretty smooth.

Fair enough.

 

[wildcat3d]

I would like to thank everyone wishing me success on my business venture. I see that while doing my research I should have asked for ideas on what equipment would be ideal for the purpose of a neck turning business. Hind sight!

I started this thread to offer brass turning services using an AutoDod and it has been turned into a discussion on the shortcomings of the AutoDod. I understand where you are coming from and I don’t think you’re doing anything other than trying to enlighten the readers, however having that discussion on my thread has about guaranteed that my $3000 plus investment has been wasted (still a better record than my market investments).

Not everyone has or can afford a full-size lathe or have the knowledge and ability to manufacture their own tooling. Why mention that there are already systems out there that can be purchased at a reasonable cost that will do the job as you think it should be done and then not tell us what those systems are?

Since the purpose of this thread has died a horrible and bloody death, I’m dead serious in asking what system/systems are out there that properly turns necks? I would like my business to succeed and hopefully it’s not too late to ask for advice.

Thank you,
Chris

This is what I use, not fast but I can keep them better than + / - 1/10,000

 

[Ccrider]

This is what I use, not fast but I can keep them better than + / - 1/10,000

Funny. I wonder how much really matters in the target. Was at a match Saturday and @DJSBRS said something about picking rat poop out of black pepper. That’s all you end up with.

Never heard that one before but it seems to fit.

 

[wildcat3d]

Funny. I wonder how much really matters in the target. Was at a match Saturday and @DJSBRS said something about picking rat poop out of black pepper. That’s all you end up with.

Never heard that one before but it seems to fit.

I really don't know, but it sure makes me feel good knowing I'm doing the best that I can.

 

[Jayplace]

I really don't know, but it sure makes me feel good knowing I'm doing the best that I can.

I think along those same lines.

I do the best that I can, knowing there are things that I don't know.
It's along the line of, the more I learn, the more questions I have.

 

[Carden260]

Personal experience indicates otherwise, I found the seating roughness got worse with subsequent firings. Smoothness and it's evil twin, roughness are quantifiable using a Profilometer, a quite expensive piece of equipment, even more so if one wants to go inside a hole. I'm not saying this is the case for AutoDod, just what I managed. Using an old-fashioned visual roughness gage and an endoscope, the best I could achieve is 60-70 micro-inch Ra. The picture posted by @Acyr looks better than anything I managed.

chris,

the more firings the rougher it gets i have never looked. . If you brush with an ISSO brush the bullet seats like it's lubbed with butter. I dont know if it gets smoother or what happens but there is a direct cooralation to seating force of a brushed case and non brushed. I have measured this with an AMP press and its quite a big gap.

 

[jackieschmidt]

I have the Texas State VFS and the Louisiana State VFS coming up, so I thought I better blow out and turn some new cases for my 30BR for those two matches.

If you have a lathe, this is by far the easiest way to turn necks.

 

[boltfluter]

I have the Texas State VFS and the Louisiana State VFS coming up, so I thought I better blow out and turn some new cases for my 30BR for those two matches.

If you have a lathe, this is by far the easiest way to turn necks.View attachment 1422406View attachment 1422407

Exactly how I do it, and the last word in precision. This thread really needs to die now.
Paul

 

[sdean]

Because of my comments in this thread, I have acquired a new name. A member sent me a personal message calling me a “Keyboard Bully”.

Should I include that in my Avatar?

That's funny. Could start a new thread for Jackie's new Avatar. There are some creative people on this site. I am glad you post on this site. You have made me think .

 

[Chris Edmondson]

I have the Texas State VFS and the Louisiana State VFS coming up, so I thought I better blow out and turn some new cases for my 30BR for those two matches.

If you have a lathe, this is by far the easiest way to turn necks.View attachment 1422406View attachment 1422407

Very nice!

Question: Is the case head loose in the tailstock holder so it can spin freely? Doesn't look like a live center is why I ask.

 

[Dusty Stevens]

Very nice!

Question: Is the case head loose in the tailstock holder so it can spin freely? Doesn't look like a live center is why I ask.

Yes it spins. He uses the shellholder to pull it back off the mandrel

 

[redrockranger]

Actually decreasing the neck wall thickness is not the only reason to turn necks. Turning the inside of the neck should smooth out the bullet neck mating surface. This should make the bullet seating and release smoother and more consistent. A big part of precision reloading is being able to control consistency.

Your barking up the wrong tree....................

 

[Rick300]

This could be his new avatar

 

[jamesdmock]

Boring with an eccentric reamer like those in the old Lee Target set will uniform the necks while thinning them also. I don't know if Lee still makes those.

 

[Chris Edmondson]

chris,

the more firings the rougher it gets i have never looked. . If you brush with an ISSO brush the bullet seats like it's lubbed with butter. I dont know if it gets smoother or what happens but there is a direct cooralation to seating force of a brushed case and non brushed. I have measured this with an AMP press and its quite a big gap.

Jason, Agreed, I've noticed that most forms of brushing and various lubes do help with seating smoothness, I've confirmed it with my homegrown seating force gage.

Here's a picture showing my inside turning best-effort; the brass is on the left, the roughness 63 Ra comparator is on the right. This was captured with a Teslong borescope. 63 Ra is described thusly: "Good machine roughness/finish with its production under controlled conditions. It also involves fine feeds and relatively high speeds."



This next picture shows a piece of virgin Lapua 6.5 Creedmoor brass as seen with the borescope. It's darn near a mirror finish..




The picture below shows a borescope view of the roughness comparator's 16 Ra turn, that's a fine as it gets for this tool. 16 Ra is considered: "High-quality surface are often produced using emery buffing, lapping, or coarse honing. These finishes are therefore great options where smoothness is of high importance."




For me, I don't see how anything I do the inside of my necks is going to improve the original surface finish. Being a stubborn sort, that didn't stop me from trying, lol.

If I ever decide to revisit inside turning, I'll either hire the OP to do it for me, or sell my wife's dog in order to buy my own AutoDOD .