6CM testing Results

[okcwby]

Where do i get a reamer and dies for the 6cm and how much work goes into case prep ?

 

[slurpin dog]

Where do i get a reamer and dies for the 6cm and how much work goes into case prep ?

Dave Bruno has the dies . He chambers barrels for Joe Hendricks, who is the designer of the 6cm. Size new .243 brass with .243 die, seat bullet into the lands, shoot it, size with 6cm die, trim case to .243 length. That is it.

Dave Bruno Precision Rifles, LLC
919 Kittanning Ave.
Dayton, PA 16222
Phone: (814) 257-8089
Email: davebrunorifles@windstream.net
(Shortrange BR, 1K, and X-Course rifles.)

Ron

 

[rcw3]

FWIW - Dick Egolf designed the 243 Eglof Imp. which Joe Hendricks then used and re-named the 6CM. As far as I know Joe was not the designer of the cartridge.
Robert

 

[Erik Cortina]

Hey guys
So after the cruel and unusual punishment of fire forming (mostly due to my fault) I took Dave Kiff's advice and load the bullets backwards. Believe it or not Hornady 95gr SST backwards with 46.5 H1000 gave me a 1.0" group at 100yds for 8 shots.


My rifle sits now:
Stolle Panda F-Class action
Kreiger 1-8, 1.25 straight finished at 28.25"
Robertson F-Class stock.
Chamber is a .270nk with a .100fb

Using a .265 bushing
49.0gr H1000 & 107 SMK = 3050fps (used a CED chronograph)

Does my velocity seem a bit slow? Or is it pretty spot on for the given amount of powder? Its very accurate!! But i want to speed it up a bit and see where the groups start to open at.

Do you mean with the boat tail out? And if so, why did you have to load them backwards?

 

[Nomad47]

I remember reading or hearing about shooting bullets backwards - but I sure can't remember the reason why.

 

[Erik Cortina]

If I had to put money on it I would think it's to reach the lands easier, but I'm not sure. Maybe by backwards he meant to load the front side towards the back! ;D

 

[tbeasley]

O'no I meant backwards, I loaded 95gr. hornady's backwards because I could not get enough neck tension. I have a .270nk which makes me trim the necks. However I do not have a redding bushing that's smaller than .264 that will hold the bullet while closing the bolt and getting a good jam in the lands so to speak.
I really need to order a .262 & .263 bushing so I can then at least practice against wind and other factors while fireforming.
Formed cases shoot very well.

 

[Erik Cortina]

So the idea of loading the bullet backwards is to get a compressed load, therefore allowing the bullet to jam?

I think you meant you have to turn necks, not trim.

 

[Dgd6mm]

FWIW, if anyone wants the TRUTH about the 6CM design, call Joe! Because I have read enough internet BULLCRAP, but Joe can set you straight, if it's that big of a deal to you! 2 things the cartridge SHOOTS WELL and so does Joe. There is 1 word here it's COLLABRATION! COLLABORATION, and I know what it means.

 

[rcw3]

FWIW, if anyone wants the TRUTH about the 6CM design, call Joe! Because I have read enough internet BULLCRAP, but Joe can set you straight, if it's that big of a deal to you! 2 things the cartridge SHOOTS WELL and so does Joe. There is 1 word here it's COLLABRATION!

I get the feeling you are bothered by some postings on this thread but I don't know why.

It's no secret that the 6CM was a re-name of the 243 Egolf Imp. When I received my 6CM re-size die from Joe originally and it said it was a "243 Egolf Imp." I called because that was a surprise, and Joe told me the story. Redding also has the cartridge by that name as well. I was told by Joe that Dick Egolf (who is now deceased) designed and made it for use mainly with Winchester brass and Joe like it and he used it and adopted it as the 6CM, so what's the big deal about that? I also have a reamer drawing for it too that also would suggest this is all correct.

I am not sure what you mean by "COLLABRATION" because there is not a word spelled that way, and I assume you meant to say either "corroboration" (i.e. to support with evidence and authority) or "collaboration" (i.e. to work together or jointly with others) and either one might fit depending on what you mean to say here.

I would agree there is nothing wrong with the 6CM as a cartridge and that it can certainly shoot very well and I did not find Joe to be anything other than straight up with what he told me above.

Robert

 

[tbeasley]

Thanks I meant to say turn not trim.
Here's the deal. If I had a standard neck (no turn) then I'm sure a simply pass through the .243 FL die and load shoot. But since I turned my brass and didn't have a bushing smaller than .264, I had to refer to the backward bullet method. This puts more bullet bearing surface in the case which grips better and works for. I'm ordering some bushinging tonight so I can shoot the 107smk's the usual way and practice.

 

[racesnake]

Isn't the 6mm AI performance about the same as the 6CM??

 

[Steve Blair]

No, the 6mm AI is a heavyweight and can do things the 6 CM and 6 SLR cannot. Like, drive 115 grain bullets over 3300 fps and burn up a barrel in 800 rounds.

 

[Gundog64]

Thanks I meant to say turn not trim.
Here's the deal. If I had a standard neck (no turn) then I'm sure a simply pass through the .243 FL die and load shoot. But since I turned my brass and didn't have a bushing smaller than .264, I had to refer to the backward bullet method. This puts more bullet bearing surface in the case which grips better and works for. I'm ordering some bushinging tonight so I can shoot the 107smk's the usual way and practice.

Thanks, now I understand.

 

[tbeasley]

This may be a little off subject, but i'm looking for loads that deal with a 1-8 twist barrel and I have a .100 free-bore. Alot of the guys I see loads for are using 1-7.5 barrels. I wish i would of waited for a 7.5-7.8 twist barrel but got to anxious.
Anyways, may velocities reflect what others are posting.. but my formed loads aren't producing the best groups. I need to start playing with seating depths where as i see alot jump the SMK's.

any appreciated..

 

[Brad from ND]

I just shot mine last weekend. I thought my Bartlein was a 5r but it is a 4 groove. My Bartlein I put on my 300wm is a 5r. I did a ladder test at 600 yds. I was shooting 115 Dtac's over H-1000 and BR-2 primers in Lapua cases. I am very pleased with the results. 48 grains of H-1000 gave me only an inch of vertical in a 10 shot string at 600yds at 3020 fps. I run them up to 49 grains but ended up with about 4 inches of vertical. No sticky bolt. All loads were .005 jam into the lands to ensure safe pressure once loaded off the lands. Now I get to try new seating depths. I'm excited.

 

[tbeasley]

Brad
Is you 6CM barrel a 7.5 twist?

Anybody shooting a 8 twist? And what groups you getting with what bullets

 

[Brad from ND]

Yessir, 7.5 twist. Ive got some 115 bergers to shoot tonight. Im not planning on using these for f- class but had a box so i figured I'll shoot them to fireform.

 

[Nodak7mm]

Now I get to try new seating depths. I'm excited.

Considering how many deer you mount Brad and the above post, I am not sure I want to ride back and forth to Elk River with you for the wind clinic.....

Rod


Couldn't resist, just couldnt.......... ;D

 

[olympian]

FWIW, if anyone wants the TRUTH about the 6CM design, call Joe! Because I have read enough internet BULLCRAP, but Joe can set you straight, if it's that big of a deal to you! 2 things the cartridge SHOOTS WELL and so does Joe. There is 1 word here it's COLLABRATION!

I get the feeling you are bothered by some postings on this thread but I don't know why.

It's no secret that the 6CM was a re-name of the 243 Egolf Imp. When I received my 6CM re-size die from Joe originally and it said it was a "243 Egolf Imp." I called because that was a surprise, and Joe told me the story. Redding also has the cartridge by that name as well. I was told by Joe that Dick Egolf (who is now deceased) designed and made it for use mainly with Winchester brass and Joe like it and he used it and adopted it as the 6CM, so what's the big deal about that? I also have a reamer drawing for it too that also would suggest this is all correct.

I am not sure what you mean by "COLLABRATION" because there is not a word spelled that way, and I assume you meant to say either "corroboration" (i.e. to support with evidence and authority) or "collaboration" (i.e. to work together or jointly with others) and either one might fit depending on what you mean to say here.

I would agree there is nothing wrong with the 6CM as a cartridge and that it can certainly shoot very well and I did not find Joe to be anything other than straight up with what he told me above.

Robert