Redding Bushing Diameters

[Brians356]

Methinks you just want to argue. I don't know why you are hung up on intelligence.

You introduced the term into the conversation, I only responded to you.

Having been in the carbide bushing business I started my Deltronic pin inventory. They are in .0001 increments and I also have them for each bore size for the bores that I chamber. I have 25 pins each for every caliber"bore size" that I chamber. My 25 pin barrel sets are in .0001 increments. Say a 6mm barrel has a .237 target bore. My 25 pins are in tenths 12 sizes smaller and 12 larger. Do you understand where I'm coming from?
Why would anybody pour a little cerrosafe in a bushing and then wait 30 minutes to measure it?

Those Deltronic gages seem to run about $6 apiece, or about $175 per set of 25 (counting shipping).

For a 6mm gun, you have 25 pin gages suitable for measuring the rifle bore, if I understand you correctly. If you had similar sets for, say 6.5mm, 25-cal, and 22 cal, that would be 100 individual gages in total. Of those 100, how many of them could serve a secondary purpose to measure the IDs of any neck bushings associated with those 4 calibers?

Pending your answer, I'm going to guess 90+ additional gages would be required to measure just 4 neck bushings, i.e. a single bushing size applicable to each caliber. I'm also going to guess, conservatively, that very cheap Chinese pin gages in the .0001" class, cost at least $2 apiece.

Even if a fellow only cared about a single 6mm chambering, presumably he might want to measure at least 2 or 3 bushings, in .001" increments, applicable to that chambering. There is a bit of overlap, but for 3 bushings I reckon 32 or so .0001" pin gages required to apply your method. Conservatively, that's $64 to purchase the gages.

A half pound of Cerrosafe costs $15, never wears out, and can be used to measure every neck bushing I and all my acquaintances own. Heck, even an unintelligent piker like me has managed to collect thirty-odd neck bushings, from 22 up to 270 caliber.
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[butchlambert]

Brian,
You have a PM.
Yes, I have 9 sets of 25 for chambering and 30ea for the 30 sizes of carbide bushings that I sold, that is 30 sizes. They were diamond lapped to size. If they didn't pin they were returned to be reworked. They were spot on and were kinda expensive at about $25 ea. 20 years ago. They did not have a taper either. I had them in 6 sizes in 22, 9 sizes in 6mm, 4 sizes in 6.5, and 11 sizes in 308 on .0005 increments.

 

[fguffey]

Kinda funny quote-pin gauges give go or no go??
If my pin gauges are in .0001 increments, what does that mean?

Before the Internet my gages were stamped go, not go; one end of the holder held the go and the other end held the 'not go'.

F. Guffey

 

[hogpatrol]

Time for more popcorn!

 

[ireload2]

Except that Cerrosafe is not the real object to be measured and Cerrosafe is not accurate to millionths.

Pin gages only give "go / no- go" accuracy but they're what I use.

It just occurred to me that Cerrosafe would work well, and then you can get a .0001" micrometer in play.
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[butchlambert]

Before the Internet my gages were stamped go, not go; one end of the holder held the go and the other end held the 'not go'.

F. Guffey

Actually before and after the internet you could buy a pin holder and install any size pin that you wanted. You could say-have a .2433 on one end and a .2884 on the other or a .2433 on one side and a .2434 on the other.
hogspatrol, is that caramel popcorn?

 

[fguffey]

Actually before and after the internet you could buy a pin holder and install any size pin that you wanted

Yes, the holders had set screws. Before the Internet the term was 'will not go' and shortened to 'not go'. And there were pins that were ground with two different diameters. And somewhere in there they made tapered gages. I was going to offer for sale a machine that grinds/makes pilots, tapered gages, grinds angles and butt cuts for length, problem; it seemed more than a few members could not handle it.

F. Guffey

 

[jerseyjoe]

$11.60 from Zoro, or you can buy name brand for a little more.

Covers .125in - .500in, well within the reloader's realm of use.

As for Cerro safe, I was a tool and die maker for Cerro Metals/Cerro Fabricated products for 11 years and used it to check forge die cavities we could not directly measure or couldn't fit on the CMM.

Our accepted tolerance using the fresh clean check metal was +0.00 / - .001"

 

[hogpatrol]

Actually before and after the internet you could buy a pin holder and install any size pin that you wanted. You could say-have a .2433 on one end and a .2884 on the other or a .2433 on one side and a .2434 on the other.
hogspatrol, is that caramel popcorn?

Butch, Yeah, with cashews. I get it at an Amish run booth at the farmer's market. It sticks in my teeth and I eat too much but what the heck. You only live once.

 

[hogpatrol]

View attachment 999209

$11.60 from Zoro, or you can buy name brand for a little more.

Covers .125in - .500in, well within the reloader's realm of use.

As for Cerro safe, I was a tool and maker for Cerro Metals/Cerro Fabricated products for 11 years and used it to check forge die cavities we could not directly measure or couldn't fit on the CMM.

Our accepted tolerance using the fresh clean check metal was +0.00 / - .001"

It takes some experience to get the proper size reading using those but most rookies use a mike like it was a C clamp.

 

[jerseyjoe]

It takes some experience to get the proper size reading using those but most rookies use a mike like it was a C clamp.

Truer words were never spoken

 

[Sheldon N]

 

[Cool Tool]

View attachment 999209

$11.60 from Zoro, or you can buy name brand for a little more.

Covers .125in - .500in, well within the reloader's realm of use.

As for Cerro safe, I was a tool and die maker for Cerro Metals/Cerro Fabricated products for 11 years and used it to check forge die cavities we could not directly measure or couldn't fit on the CMM.

Our accepted tolerance using the fresh clean check metal was +0.00 / - .001"

Well you could buy a really good set for a little more money.

 

[jerseyjoe]

Poor Mitutoyo mic, looks like it even has a calibration sticker on it .

Back to the QA lab with it

 

[Cool Tool]

Well gentleman I have read this post from one end to the other if you are trying to achieve what you want in accuracy of a load don't worry about what the bushing size actually is load an measure neck tension what the case gives you in accuracy mr. lambert is first class in what we do when it comes to loading for accuracy about half you posters don't have a clue about accuracy an I hope hog control does not end up with cholesterol problems he eats a hell of a lot of popcorn.

 

[hogpatrol]

That's OK, a dremel will do a good job of removing any splatter.

 

[fguffey]

don't worry about what the bushing size actually is load an measure neck tension what the case gives you in accuracy

George Tanner, very good? Now tell me; how do you measure neck tension, I have tension gages, problem none of my tension gages are calibrated in tensions. For some strange reason my tension gages measure in pounds or thousandths of deflection. I can not measure the effort required to seat a bullet in tensions; no matter what, when I want to know I have to go straight to pounds.

F. Guffey

 

[hogpatrol]

Yep, this thread has gone there.

 

[butchlambert]

George Tanner, very good? Now tell me; how do you measure neck tension, I have tension gages, problem none of my tension gages are calibrated in tensions. For some strange reason my tension gages measure in pounds or thousandths of deflection. I can not measure the effort required to seat a bullet in tensions; no matter what, when I want to know I have to go straight to pounds.

F. Guffey

Frank, Frank, So you take that to the range and measure your loaded rounds? What do you do when it ain't in spec? How many rounds of brass do you take to a match. Do you use a different bushing for each round to uniform your pressure reading? Give me a lesson.

Got lots to do, will revisit this later today.

 

[fguffey]

if you are trying to achieve what you want in accuracy of a load don't worry about what the bushing size actually is load an measure neck tension what the case gives you in accuracy

Butchlambert, I was going to take his advise and not not worry the bushing size and then he went into measuring neck tension. And I ask; "How do you do that?" I am aware of a hydraulic press that measures bullet seating in pounds but in their video there is at least a 20lb spread between the first two bullets seated. I also understand they do not use a conversion from pounds to tensions. All of this leaves me with bullet hold, that is where I started and then everyone started using tension with no way to measure it; except lots of tension and little to no tension.

F. Guffey