Scratching my head on bushing die!?

[Josh11]

I have a 6x47 bushing die that I am using with my 6.5x47 round. I am using a .288 bushing. My loaded rounds are .290. When I size my cases with the bushing die, I do get the proper shoulder bump but my case neck measures .275. What am I doing wrong? Do I need a different bushing or should I change my primer punch pin holder?

 

[Sheldon N]

My wild guess would be that the shoulder portion of the die extends too far inward to use it for 6.5x47 sizing. No way that the bushing itself is causing that, you are likely sizing the neck with the shoulder of the die.

 

[Josh11]

If that were the case, could I check that by removing the bushing and decap rod and run a case through the die? Therefore making the neck changed?

 

[Brians356]

If that were the case, could I check that by removing the bushing and decap rod and run a case through the die? Therefore making the neck changed?

Yes. Or just measure the neck opening of the die. It probably measure close to .275".

What brand die? FWIW my Redding 6mm body die has a neck opening of .282", and their Type S die would have the same size opening beneath the bushing. Your make of die may be cut tighter. It's a bit hard to imagine as tight as .275', as it needs to clear a fired 6mm neck.
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[Josh11]

It's a Redding type s.

 

[Patch700]

First course of action if you do not have a means to properly measure the neck opening where the bushing sits is to size a case without a bushing... If it comes out at .275" then i guess you have your answer..

 

[Patch700]

I should add to this that one has to remember that even though there is only .5 of a mm difference between the two calibers , that is still .020" ... Some dies have that much slop and some don't.

In example : Certain body dies for the 6.5x284 will not size a straight 284 without touching the neck and some still have clearance to spare.

 

[Shaggy357]

+1 for sizing a case without the bushing. I have a Redding 6BR S-Bushing die and I use it for 6, 6.5, and 7BR. Mine works fine with each of the bushings for caliber. You may have to remove a little material to get your bushing to activate.

Steve

 

[Brians356]

Any 6mm Type S die should be identical to my 6mm Redding Body Die WRT neck opening, or so I have been led to believe. But it's possible I suppose they are not, or that there could be variation or change in design over the years (doubtful).

But it occurs to me my body die is 6mm Rem, but this Type S is 6x47, so there could be some inexplicable difference.

You don't really have to size a case w/o a bushing, just remove the entire bushing stack (as if changing bushings) then drop a fired case into the die and see if it is stopped short when the case mouth encounters the neck opening. The case head would still be hanging out of the die an extra 1/4 inch or so, and be obvious.

If the body's neck opening is "sizing" the neck, it should be relatively rough, leaving faint streaks on the neck, compared to what the ultra-smooth bushing leaves behind.

I suppose another (remote) possibility is that your bushing is stamped wrong! Even just using a dial caliper, you should be able to measure the bushing ID and see if it is closer to .275 than to .288. I measure mine with pin gages, but that accuracy is not required here.
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[swd]

My wild guess would be that the shoulder portion of the die extends too far inward to use it for 6.5x47 sizing. No way that the bushing itself is causing that, you are likely sizing the neck with the shoulder of the die.

This^^ They are hard as hell, you can take it to a shop and have it opened up with a carbide boring bar. I would only go a few thou over what you need. If you use it for a 6mm also it may or may not leave a small un bumped part of the shoulder where it meets the neck. If your not also loading 6x47 no worries..

 

[Josh11]

Just ran a piece of brass through the die without a bushing. It did size the case neck to .275.

 

[normmatzen]

Save some money and trouble, get a LEE custom collet neck sizing die with a couple custom mandrels to control seating force and take the guts out of the bushing die and use it for a body die. Now you're good to go!

 

[barefooter56]

Just ran a piece of brass through the die without a bushing. It did size the case neck to .275.

Josh11,
If you call Redding they will probably tell you that you should be using the 6.5x47 FL die. The neck opening is larger in diameter. You could use the 6.5x47 die on brass sized down to 6x47 But it dosen't work the other way.

 

[XTR]

My bushing die experience has been that they size the brass to several thousandths less than the number on the bushing. (like a .332 that gives me ~.328) Don't know why, don't care. I think I have 5 or six different bushings for my 308 dies. I can't tell you which is in there right now, but it is the one that gives me .002 neck tension.

 

[Mozella]

My bushing die experience has been that they size the brass to several thousandths less than the number on the bushing. ... snip.............

To add another data point without trying to be argumentative I'll say that the bushing dies I use on my .223 and 6mm BR cases hit the stamped number almost exactly. Keep in mind that measuring a case neck is something of a crap shoot because they often have some degree of taper and aren't all perfectly round, so it depends on exactly how and where on the neck you take a measurement. But for the most part, the stamped number on my dies match the measured case neck OD. Note that I anneal every time.

 

[XTR]

not considered argumentative (and I've got some from Forster what work just like that). My point is find the one that gives you what you want, note which one it is and get on with reloading and don't worry about what is stamped on the side.