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6CM - Here's a picture

I have been following this whole thing from the beginning and have to agree with JB that there is a sense of secrecy and mystery about it. When Joe first mentioned his 6CM, more than a year ago now I think, shooters began asking for a photo or at least a description. Then a photo appeared, I believe on this Forum, that purpoted to show the cartridge. Then we were told, "No that's not it." Then we were told, "Yeah, that's it." The whole thing went away for a while until last week when Robert posted the new photo and my first reaction was, "whoa, ANOTHER photo?"

I can understand Joe's reluctance, at first, to give out any details since he was trying to promote his idea and didn't want to be pre-empted, even though he was told by several shooters, including me, that he had been pre-empted years ago. ,I even included photos of the older cartridges from my collection.) But that's all ancient history now that we have the final, certified, correct cartridge pictured here on this thread. I suppose we could go on and on with photos and counter-photos but for what purpose? More than once I've said that "I'm outa here" but I always come back for more. So I'll just say again, Nice looking cartridge Joe. Good luck with it.

Ray
 
Robert,
I don't want to hijack this thread but could your respond to my question for you on the reamer for your round?? Thanks!!!
 
jb1000br said:
Robert...it appears both photo's are yours due to backgrouod similarities, but it seems maybe Joe sent me the wrong picture initially, "way back when" before you even thought of posting about the 6 super x :confused:

JB

JB

I can say without a doubt that I took both of those photos. The first one,with the loaded cartridges) was a photo I took a while back when I was developing my 6mm Super X, and I also e-mailed it to Joe,who must have sent it on to you). The second,brass cases) I just took a day or so ago, and that was the first time I ever had posession of a 6CM case to show in comparison.

Robert Whitley
 
Raptor said:
Robert,
I don't want to hijack this thread but could your respond to my question for you on the reamer for your round?? Thanks!!!

Raptor

I am sorry to say, I'm drawing a blank on this - what was your question again? Too many e-mail, postings, etc.

Robert
 
Robert,
Look down further on this form for a message with your name as the title. I was wanting to know where you had the reamer made for your 6superx and what it cost you??? Also Would you send me the specs on it if I gave you my address??? I could not open the attachment you had in your original post. Thanks!!!!!!!
 
I'm still trying to figure this out??? Does the original picture in this thread contain a 6CM and if so which one is it? The cartridge on the left and the one in the middle appear to have the same neck length. At least the difference is not .1". So does the shoulder get pushed back before fireforming or not? It absolutely does not appear that way from the photo. The case appears to be a 243 improved with about a 30 degree shoulder. I'm not trying to cause trouble but I would like some clarification.
 
tightneck said:
I'm still trying to figure this out??? Does the original picture in this thread contain a 6CM and if so which one is it? The cartridge on the left and the one in the middle appear to have the same neck length. At least the difference is not .1". So does the shoulder get pushed back before fireforming or not? It absolutely does not appear that way from the photo. The case appears to be a 243 improved with about a 30 degree shoulder. I'm not trying to cause trouble but I would like some clarification.

Don't follow what JB was suggesting, he was apparently mis-informed and his information was incorrect. He apparently was thinking the picture of the 6mm Super X was the 6CM.

The original picture posted on this thread of the cases,not the loaded rounds) contains the 6CM in the center. The picture of the loaded rounds does not contain the 6CM,i.e. it has the 243Win on the left, the 6mm Super X in the center and the 6XC on the right).

Joe did not say .1, he supposedly said .01 longer neck of the 6CM vs the 243 Win,JB suggested .1 but his information is in error).

It seems like the more this is explained, the more confusing people become. Maybe I will start a new thread with only a picture of the 6CM vs the 243 Win

Robert Whitley

The 6mm Super X has a much longer neck than the 243 Win and the 6CM.
 
Raptor said:
Robert,
Look down further on this form for a message with your name as the title. I was wanting to know where you had the reamer made for your 6superx and what it cost you??? Also Would you send me the specs on it if I gave you my address??? I could not open the attachment you had in your original post. Thanks!!!!!!!

My e-mail address is rcw3@erols.com - send me an e-mail and I will send you a copy of a 6mm Super X reamer print. You will have to ask the reamer maker you select for a price. Most customs reamers I have had made up run somewhere between $135 - $230.

Robert Whitley
 
On 3/21/06, Joe posted the following response to the thread "6CM any new reports?":

-----------------------------------------------------------
The advantages of the 6CM over the straight 243 are:

1. Slightly Increase case volume 55.0 gr H20 vs 54.0 gr
2. Improved shoulder angle 31 deg vs 20 deg
3. Longer neck .264" vs .241"

The 6CM is designed so that when fire forming you have positive head space. Meaning that a part of the original shoulder on the 243 makes contact with the chamber.
-----------------------------------------------------------

Here's the link: http://www.websitetoolbox.com/tool/post/6mmbr/vpost?id=993323&trail=16
 
OK, so apparently Joe sent me the wrong picture from the very beginning...no wonder I was corn-fuzzed :confused:

Robert...what do YOU do about the shoulder material now in the base of your super-x case?

Jason
 
Jason

Joe sent you the wrong photo.

For the 6mm Super X, if you want to use Lapua brass, you need to neck turn because the shoulder material you form into the neck is thicker and there is a bulge on the neck at the junction of the neck and shoulder, but with Winchester brass, I have not noticed any such issues. It seems on Winchester 243 Win brass, the neck and shoulder material are the same thickness, so if you have a chamber with reasonable clearance you can run a "no neck turn" set up with Winchester brass, or you can skim neck turn it,or Lapua for that matter) to clean up nicely at .272" loaded. Attached is a revised long range reamer design throated for the 115's and a neck at .274" to use with brass neck turned to .272".

Robert Whitley
 

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