I just had this bug hit me, and I am sure almost everything as been done or tried before, so here goes? Anyone know of any info on a 30-06 case necked down to 6mm? I can't find a record of it being done, but I am almost sure it has.

John

240 Hawk

www.z-hat.com

It is essentially the same as a 240 weatherby, without the belt. I have the latter and like it a lot for antelope and coyotes.

There's also the 240 Gibbs.

Again, essentially an unbelted 240wby.

AD

The 6-06 is one of the older wildcats, going back to the 1930s. It was originally called the 240 Super Varminter. In my collection I have versions with 17, 25, 28, and 40 degree shoulders. There are a couple of long range (1000 yard) Benchrest shooters who still use the original version in competition.

An unbelted 240 WBY has a smaller diameter case body and, therefore, less case capacity.

Ray

quote:

Originally posted by Cheechako:
The 6-06 is one of the older wildcats, going back to the 1930s. It was originally called the 240 Super Varminter. In my collection I have versions with 17, 25, 28, and 40 degree shoulders. There are a couple of long range (1000 yard) Benchrest shooters who still use the original version in competition.

An unbelted 240 WBY has a smaller diameter case body and, therefore, less case capacity.

Ray

Surprisingly case head and length of the 240 wby is suprisingly close to the 30-06. At current, I have only found one person listing load data for a 6-06. I have the urge to build one, but 240 wby data is definatley more accessable. After putting together a 243 win for the wife, I may put together a 6-06, or a 220 swift...

John

quote:

Originally posted by Cheechako:
The 6-06 is one of the older wildcats, going back to the 1930s. It was originally called the 240 Super Varminter. In my collection I have versions with 17, 25, 28, and 40 degree shoulders. There are a couple of long range (1000 yard) Benchrest shooters who still use the original version in competition.

An unbelted 240 WBY has a smaller diameter case body and, therefore, less case capacity.

Ray

an 06, necked down to 17???

That ought to be a weird round to see... also talk about a barrel burner and barrel fowler...

quote:

Anyone know of any info on a 30-06 case necked down to 6mm?

I have a .243 superrockchucker (a 6mm-06 with a 25 deg shoulder)

It's a fine varmint rifle but in all seriousness very little better than a 6MM Remington.

I now have two 6MM Rems in process in '98 Mausers an they are awesome varmint and deer combo cartridges and more offers very little in the end result.....I'd never build another 6MM on anything larger than the 6MM Rem case unless some breakthru in powders allowed for another 300'/sec adavntage over current powders and then it's purely a varminter.

Be your own judge but the 6MM Remington is a very fine and hard to beat case!

with the right bullets (110 to 115 gr. Barnes' originals) my 6mm X.270 IMP was a fantastic mule deer killer. With common or standard hunting bullets of that day (1967) it was a worthless crippler of deer.

I'm glad I did it but in truth I have to align myself with Vapo Dog's phiosophy in regard to it compared to the fine .244 (6mm). roger

quote:

Originally posted by vapodog:

quote:

Anyone know of any info on a 30-06 case necked down to 6mm?

I have a .243 superrockchucker (a 6mm-06 with a 25 deg shoulder)

It's a fine varmint rifle but in all seriousness very little better than a 6MM Remington.

I now have two 6MM Rems in process in '98 Mausers an they are awesome varmint and deer combo cartridges and more offers very little in the end result.....I'd never build another 6MM on anything larger than the 6MM Rem case unless some breakthru in powders allowed for another 300'/sec adavntage over current powders and then it's purely a varminter.

Be your own judge but the 6MM Remington is a very fine and hard to beat case!

Truthfully, the 243 and 6mm are hard to beat for efficiency and handiness. I was looking at the 6-06 as I may have a lead on a rem 700 LA Std face that I am not sure what to do with. The practical side says build a 35 Whelen. The goofy side says go fast, barrel burning fast, and keep Dan in business. Truthfully, from what I gather so far in my internet search is that the 6mm-06 would be similar in performance to a 240 Wby w/o the expense of belted brass.

Besides, nothing is more fun than watching light 6mm bullet at 3600 fps or more touching squirrels. Wind drift would be less than issue, and the occasional coyote can be terminated with impunity. Of course, my 375 H&H does the same thing, but at more of a cost.

John

Here you go, from Jarrett and Jim Carmichael and you can buy the loaded ammo from Jarrett's site at this link. I've thought about doing one of these for a long time, but always built something else. Let us know how it works out if you do it.

http://www.jarrettrifles.com/petcalibers.aspx

.243 Catbird

68-70 gr. Bullet.................4100fps
85 gr. Bullet......................3800 fps
95 gr. Nosler Partition........3500fps

The .243 Catbird was originally conceived to be an ultra-long range 6mm varmint round, but will work quite well for a deer cartridge also. It is a .270 Winchester case necked down to .243 and blown out with a 35 degree shoulder. This case is delivering some impressive velocities. Our original goal was to get 4000 fps with a 68-70 grain bullet. However, we surpassed this goal with 4100 fps. This cartridge will pack plenty of punch for either long range varmint hunting or medium range deer hunting. Cases for this chambering are quite easy to form. You simply run a .270 Win. case through a Catbird full length sizing die, load it with a reduced load and fire-form it by simply shooting it through your gun. There are two versions of this cartridge. One of them has a tight neck and the other has a standard neck. The cases for the tight necked version must be neck turned before they can be loaded and fired. Once cases have been fire-formed for either version they can be simply reloaded as any other cartridge. While this cartridge may not be for everybody, many people will love the high velocity and the accompanying flat trajectories that can be achieved. This round is quite possibly the fastest 6mm cartridge ever developed. Of course, you have to give something to get something. She is a “barrel eater†expect about 1500 rounds of good accuracy.

quote:

an 06, necked down to 17???

That ought to be a weird round to see... also talk about a barrel burner and barrel fowler..

Read it again.

quote:

Originally posted by Ted68:
She is a “barrel eater†expect about 1500 rounds of good accuracy.

That's about what I would expect from a hot loaded 243..... wouldn't 750 be nearer the mark?

I can sure go for cheaper brass than the Weatherby stuff I need for my .240 Wby. As for the 6mm-06, isn't it also very much the same as the 6x62mm Freres?

LLS