is there any rimmed .308 cartridge that will clean up a 30-06 chamber????... without setting the barrel back???... secret project going on here....

well... i read this and thought you were asking if there was a rimmed .308 NATO .. which, of course is the 307 ...

i haven't heard of a 3006r, but that doesnt mean it wasn't done

maybe; but you've gotta know more than I do (and have better google skills)

I think if you blew this case out and necked it up it could work.

7x65R

i want to clean up a 30-06 chamber, without setting the barrel back, keep the barrel .308... but have a rimmed case....

Will the H&H Super 30 or Flanged magnum do it . Is that not just a 300H&H flanged. Didn't check the dimensions but thought they used to just rechamber a 06 for it.

quote:

Originally posted by jimatcat:
is there any rimmed .308 cartridge that will clean up a 30-06 chamber????... without setting the barrel back???... secret project going on here....

I don't think so. But one could be made by using a .30/06 Ackley Improved or even a .30 Gibbs reamer then making the rim cut as a separate step.

Brass could be made from the 7X65R case. I use this case for 8X60RS brass. Opening it up to hold a .308" bullet and trimming off 1mm would be an easy conversion..

jimatcat

That is a tough one.

You want a case that is easy to get.

A 375Flanged case would probably work.

Guys here that have extraction problems with 30/06 in cheaper doubles do exactly what El Deguello mentioned. They modify chamber and extractor to take the 7x65 rimmed case and then form 30/06 cases out of that brass. Seems to work OK.

Joe

Check the dimensions of the .30 Blaser.

Carcano

I see the problem...you can't just run a 8x57R through a 30-06 sizer as it is too short. Hmm! I also suspect that 7x65R is going to be too "slim" at the bottom end of the case.

I'd look at some of the older straight blackpowder cartridges and see if modern brass is available for them and run it through a sizer.

Is 375 Winchester too short?

Otherwise I would urge a "radical" solution of using a belted case and seeing if the extractor will work off that or turn off the belt to give a semi-rimmed case.

Would 220 Swift or 225 Winchester also give that semi-rimmed result? Or the Japanese 7.7mm? I suppose that Norma still produces them?

Okay. The .30 R Blaser is 68 mms long, and a 8x57 IRS fits into the chamber, so reaming the .30-06 chamber out for this cartridge seems indeed a viable option! And it's a modern factory cartridge, too, no obscure British first-quarter-of-the-century contraption.

Carcano

i looked in "cartridges of the world" last night.... the .30 flanged might do it.... anybody got a couple of loaded cases i can buy???...

Those 30 Flanged cases are made of unobtanium. I'd go with the 30 Blaser too.

Having also looked at "Cartridges of the World" I'd suggest 444 Marlin and hope that in re-sizing it it "grows" that extra length OR 9.3x74R and hope that the .005" difference in case base diameter won't be an issue what with "makers' tolerances" etc., etc.

the 444 marlin is necked down to 308 as the 308 bellm but i think the shoulder will be to far back to clean up an 06 chamber

you could try swaging a rim onto a 30-06 case. then cut the rim to the same size as a 45-70 or a 7.62x54r. you could use standard 30-06 loading dies with the 45-70 or 7.62x54r shell holder.
swaging rims to unrimmed brass

Or....
You could simply make a rimmed 30-06. Take .400-350 NE brass trim to 2.5" full length resize in 30-06 dies. Fire form, trim to 2.490, load and enjoy. Of course this plan relies on ones ability to find .400-350 NE Brass. One might just find some at http://www.huntingtons.com/cases_bertram.html
As for the chamber, All you have to do is cut a .532 dia X .050 deep rim cut.

The .300 H&H will do it, I shoot an original and its a great round. Brass by Horneber and Bertram. Loads are easy too.
Steve

quote:

Originally posted by skb:
The .300 H&H will do it, I shoot an original and its a great round. Brass by Horneber and Bertram. Loads are easy too.
Steve

Steve,
He'se looking for a flannged 30-06 .. not belted...

How about taking a 45/120 and passing it through a 30-06 die... we can work from there. We'll call it the SPR-FLanged

jeffeosso
IMOP the 45-120 is not a good canidate for the rimmed 30-06. The base dia of the 45-120 is .5095 too big for the 06. A better choice might be 9.3 x 74R brass.

Like Carcano already mentioned, the .30 R Blaser is the ideal approach, this cartridge was so designed that both .308 and 30/06 chambers could be reamed.

jeffeosso
Heres another thought, If jimatcat needs to totaly remove the 06 chamber he could rechamber it with a .300 Dakota reamer. Add a rim cut, and then form the brass out of .450-.400 NE brass. This would be a very interesting cartridge.

DUK
Have to agree with you, the 30R Blaser would be the easiest. But it would take some of the fun out it.

I shoot an original FLANGED 300 H&H, also known as the super .30. Its a Great round. Here is the rifle.

quote:

Originally posted by jimatcat:
is there any rimmed .308 cartridge that will clean up a 30-06 chamber????... without setting the barrel back???... secret project going on here....

The man clearly ask for a flanged cartricge with .308 bullets that will clean up a .30-06 chamber without setting barrel back.
The only factory cartridge that will do that( 300H&HFl. will NOT), is -as Carcano told us - the .30 Blaser. And its larger volume produces .30-06 velocities with lower preassures, fit for a break-open gun.

OR, as H2Oboy suggested, make rimmed .30-06 cases of .400-350 cases, trim to length and fl-size. If you can get the cases, this is easy and cheap.

Going Wildcat, easiest and cheapest would probably be to cleaning chamber with a .300 WinMag to the belt, trim a rim in the lathe, then use shorthened .300 H&H Flanged cases. FL size in shorthened .300 win mag die.

.30 Blaser is sooo much easier and cheaper, cases easy to come by.

I just measured 2 cases and it looks to me that the .300 H&H flanged will clean up an 06 chamber nicely. Am I missing something Bent? The shoulder of the 06 round was my only worry and it looks as that will be fine. Where is the problem?

WOW,
Thanks SKB!
For some reason I have made wrong measurements.
The .300 H&H Fl. WILL clean up the .30-06 chamber. My bad!

Still, the .30 Blaser is less work and cheaper brass.

Ok I thought I was slipping.......

Here's a visual comparison between the 30 Blaser Rimmed and the venerable '06...



Or, you could always take a .416Rigby case and wildcat it into something that would do the job, as I am "thinkering" with right now. I am deciding between calling it the 30-416 or the 300 Nevada Desert Magnum (300NDM for short). It is the same length as a .30-06 so I can use my Lee case trimmer on it. The neck is .405 long to reduce throat erosion and to allow the use of bullets with a long ogive. The shoulder is higher by a bit to completely wipe out the present 300WSM chamber. It will require the boltface to be opened from .532 to .590, but I'm told this can be done on a .700-inch bolt. This case is purely theoretical at this point; it exists only as this sketch. I need to figure out who can make dies and a reamer for it...

Cartridge Creator is from ammoguide.com

You could take a Sharps .45-120/125 straight-wall case and neck that to fit your needs. This case is 3.25 inches long, has a .608-inch rim diameter and is .506 at the base of the body. The rim is .070 thick. You'll have so much to work with, you won't know how to act...