I've long wanted to do a Ruger #1, but one of the criteria I have is a rimmed case. I know, doesn't really matter nor is it really needed, but one of the those wierd preferences.

As I get older, milder chamberings are more enjoyable, and might as well have a gun that is enjoyable to shoot. So I was thinking the 444 is a good candidate for a rimmed case and 6mm rem is just about the performance level I'd be after.

I have a 6mm 303 in a martini and a 6mm bullberry in a contender rifle. Both appear to fit your needs, though the 6/303 would seem to be a better fit in a Ruger.

There is a 6mm-303 Epps Imp and the 6mm-3040 Ackley Imp. I have a 25-303 Epps Imp and it is very similar to the 257 Roberts.

The 6mm-303 was marketed here as the 6mm Musgrave.

How about necking up a 5.6x57R as an alternative?

Just to be different you could neck down a 7-30 Waters.

quote:

Originally posted by Paul H:
I've long wanted to do a Ruger #1, but one of the criteria I have is a rimmed case. I know, doesn't really matter nor is it really needed, but one of the those wierd preferences.

As I get older, milder chamberings are more enjoyable, and might as well have a gun that is enjoyable to shoot. So I was thinking the 444 is a good candidate for a rimmed case and 6mm rem is just about the performance level I'd be after.

What you are looking for and your approach sounds good to me!

Let see 6mm Halger mag is off 444 marlin case,6mm JDJ #2 off the 225, 6mm KragAI 6mm swift,6mm/30-30

I think that the 6mm Rem is based off the 7mm Mauser, is it not? The 7mm Mauser Rimmed was/is a popular chambering in European single shots. There should be plenty of good quality 7mm Mauser Rimmed brass available. You should be able to use a standard 6mm Rem reamer and then cut the rim recess as needed. Personally, I would set it up to headspace on the shoulder to avoid issues with different rim thickness between brands. Standard 6mm Rem dies and the right shell holder and just run the parent case into the FL die to neck it down and you should be good to go with a true 6mm Rem Rimmed.

Absolute best choice......6x70R

Mike Bellm, bellmtcs.com, has a series of cartridges on the .444 Marlin Brass. You use the .308 family of dies and a 444 Marlin shell holder to load. focus is on TC rifles. Don't recall a .243, but why not. Might want to check it out for simplicity, if that is your thing. Luck. Happy trails.

can save all the expense of a cat by using a 7x57r .. heck, there's a 7x65r, too

but, if i was dead set on 6mm, i'd call dave manson and tell him i would be using the 7x57 as the basis...

of course a 30-40 necked and improved wouldn't be a bad thing.. lower pressure for that performance level

quote:

Originally posted by Paul H:
I've long wanted to do a Ruger #1, but one of the criteria I have is a rimmed case. I know, doesn't really matter nor is it really needed, but one of the those wierd preferences.

As I get older, milder chamberings are more enjoyable, and might as well have a gun that is enjoyable to shoot. So I was thinking the 444 is a good candidate for a rimmed case and 6mm rem is just about the performance level I'd be after.

My bud has one on an old p14.I made brass for him from 307 winchester so basically a slightly improved rimmed 243.I have a 6 mil Brit which is a mild improved 6-303.

If you are set on the 6mm then plenty good suggestions above, but if it's a high velocity rimmed small bore that's wanted then the 25-303 matches the 243 for velocity at lower pressure. In short, the 25 cal makes a cartridge of that size more efficient. Just a thought.

6mm Navy Lee. That is what the 220 swift is necked down from. So you could neck 220 swift cases back up to 6mm.

quote:

Personally, I would set it up to headspace on the shoulder to avoid issues with different rim thickness between brands.

I wouldn't do that because rimmed cases might tend to be all over the place on the shoulder. I'd head-space on the rim for the fire-forming then use the shoulder. I do that for my Lee Enfields.

quote:

Originally posted by dakor:
6mm Navy Lee. That is what the 220 swift is necked down from. So you could neck 220 swift cases back up to 6mm.

That's sure the easiest of the lot, and nice strong brass too.

This French site offers reloading tools, etc. for the 6x57R Mauser which came to be back about 1895. They also have a link where you can ask questions about this and/or other cartridges.

As most European businesses have someone on hand who can read/write English, I'd try asking them. From their web-site it also appears their dies are made by RCBS...what a surprise eh?

Might not help, but it couldn't hurt to ask them.

http://www.naturabuy.fr/JEU-D-...EUF-item-722709.html

Yes Iv'd done this in 6mm + 25 cal using theMartini
Henry action When rebearalling using the the 303 variety there is NO change in the bolt face.Use P.O Ackley's # 1 as reference

quote:

... but one of the criteria I have is a rimmed case.

A man after my own heart! For me it has to be rimmed too. In fact, I only have rimmed cartridge rifles - 22 hornet, 303 Brit and 25-303.

The 6mm Lee Navy was/is a semi-rimmed cartridge. The rimmed version would be the 6mm Musgrave / 6mm-303. Check out Steve's Pages, http://stevespages.com/page8d.htm and see that they are almost the same case. Not surprising since Lee designed both rifles and cartridges.

But for a 6mm Remington, simply use the 6x57R or neck down 7x57R cases which might be more readily available. The 6mm Remington should theoretically still work in it.

You could make a rimmed 243 using 307 Winchester (a rimmed 308).

6mm-30-30 is an old wildcat, with common parent brass. Even easier to reform with 7-30 or 25-35 brass.

The 6mm Navy has little or no rim. Drawings differ, but I can't see one in photos. The 220 swift necked up will be about 0.15 short.

http://ammoguide.com/?catid=25

http://en.valka.cz/viewtopic.php/t/21792

Bruce

Mmmm ... calling the 6mm Lee Navy 'semi-rimmed' may be stretching it a bit. But it's there - sort of. It's the 220 Swift that is semi-rimmed. That's only to suite the 308 family of actions.

6mm Swift


6mm-303


The 6mm Lee Navy seems to have little or no 'rim'.

Check companies that sell or rent reamers. I will bet that the 6mm/30-30 or the 6mm/40-40 krag has been done.

quote:

You could make a rimmed 243 using 307 Winchester (a rimmed 308).

This thought should be considered seriously before going forward with the project.... One might even get away with using a standard .243 loading die set and a standard .243 chambering reamer.

That said the brass isn't as readily available as .303 British....so if one goes this route he might be well advised to order a lifetime supply of brass.

It might look squirrelly but

The 6mm PPC can be made from .303 brass.
It is a very accurate round
The dies, chamber reamers and brass abound.
Making the cases would be a PIA. You could always have two different extractors if you change your mind about the rim.

My current rim fling is with a Dutch 6.5X53R Mannlicher. The carbine was made by Steyr in 1900 and is the finest piece of workmanship I have every owned.
I make cases out of Winchester .303 brass. The case is such a good fit to the chamber that I expect that case life maybe almost infinite with care. Certainly the cases should give about 20 loads apiece. This is not a 6mm but for hunting smaller large game and large varmints it is really nice.
But you could probably find a way to make a rimmed 6.5X55 too.

One advantage of the 7x57R brass is I bet you could just use 6mm Remington diess to form cases and would not need a custom die.

If you go with the .444 case and neck it down to 6mm Rem., you can fire both rimmed and std 6mm Rem.,ammo in the same rifle if it is a #1 Ruger.
Jim Kobe built me a #1 Ruger that shoots and ejects the rimmed 22 Jet and the rimmless version I created. I'll bet he could do the same for you and your 6mm project. roger

6mm Bullberry Imp.

240 Holland and Holland ?

A rimmed version of the 240 Apex.