Can someone point me to some web sites with good info on the various 6mm wildcats?

Looking for info on the likes of the 6x45 and 6x47.

I had my daughter out shooting her 6x45 yesterday.

Let me point out one thing seldom mentioned about these two rounds. I have had both. The 6x47 was developed as a BR round, and from an accuracy standpoint has the advantage(?) of a longer neck. While the 2mm in length doesn't sound like much, it is close to 0.1" and makes a difference in magazine length in a small action. For BR, it is no big deal, but for a huting rifle built on a Sako, it is. In my L461, you could not seat any bullet that would function through the magazine. If seated deep enough to fit the mag, the case mouth extended past the ogive of the bullet and caught on the chamber lip. This was true of the original Interarms Mini Mark x's too. I think the last Mini's had longer magazines.

You could of course alter the mag box and bolt stop, but that's a lot of work to do for the slight gain in performance, especially considering the lack of popularity for the parent case. I ended up setting back and rechambering.

No problem with a bigger action, but if you are considering the Sako/mini, it is sometthing to consider.

Art thank you. That is exactly the type of info I am looking for.

I have a Mini-Mauser in 17 Mach4 I am considering reboring to some type of 222-223-222Mag bases cartridge.

To make sure I understand. The 6x47 is bases upon the 222 mag but COL will be too long for the action?

I am considering this round, the 6mm Cheapshot. Based upon what you said it seems a perfect fit.

The 6x47 case is .093" longer than the .223 but the neck is longer so the shoulder headspace datum is pushed back on the .223 case, so I just trimmed .093 off the
bottom of a 6x47 resizing die and ran .223 cases that had already been
expanded to 6mm (and thereby making a common wildcat called the '6x45')
through the shortened 6x47 die which set the headspace to 6x47 minus
.093" and created a brand new cartridge which I named the 6mm CheapShot.

Howard for a good 6mm I'd take a .308 case and neck it down to 6mm and I'd call it a .243 and you should be good to go. Wont need to build a special rifle, get special dies, reamers or anything.

I should have said already. I want it to fit in a Mini Mauser.

Not familiar with trying to fit the 6x47 into a Mini-Mauser but the chambering sure works fine in a Model 7 !! Lilja 21" pencil barrel, feed flawlessly with 60 Sierras thru 85 grain Sierras and all the VMaxs. A joy to carry and a joy to shoot. And if not for the advent of the PPC's during the mid-70s the 6x47 would still reign as the king of the BR shoots as it did before the PPC's! GHD

All I can say is go for it. I love my 6x47 it is one hell of a shooter. I took a pronghorn buck at 300 yards with it this year using a 70 grain NBT at 3066 fps at the muzzle. I put it together on a Stevens 200 action, and even with the crappy tupperware stock it is one of my most accurate rifles ever.

Found all the info on it really that made me decide to build it in the Seirra reloading manual. It has the 6x45 and 6x47 right together in the book so it is easy to compare data. Brass would have been a lot cheaper if I had done the 45, but neither cartridge is hard on brass. Plus I found the dies at Midway for $50 so that was a bonus as well.

Art makes a good point about magazine length in the small actions. You give up little in using .223 brass vs. .222 Magnum as the difference in capacity is only about 5%, if that.

Although the .222 Magnum is a favorite of mine (and I have two of them in Sakos), the Sako L461 (and Mini Mark X) magazine limits even short .224" bullets in seating depth. The genearlly longer 6mm bullets you would use for medium game would fit much better in the slighlty shorter .223 case.

I agree completely that the 243 solution is the way to go if you are going to use a full size action. However, the L461/mini MarkX action allows the construction of a class of rifle in another whole weight and size category than anything possible with a full size action. My daughters 6x45, with an 18" Douglas barrel, maple stock and with a Burris Mini scope in 2x7 weighs around 5-1/2 pounds.

I also am building a rifle on one of the latest Charles Daly Minis. They actually have different magazines for the different bolt faces. The 22-250 bolt face action has a magazine box quite a bit longer than the older guns, and would easily accomodate a 6x47, if you could find the parts to transfer. I tried an exercise on this action. I cut the rear magazine boxx corners, angled the rear back, milled out the rear magazine well to the trigger, milled the rear bridge back to the first scope mount screw and ground back the bolt stop. The result was an action that would feed 250 savage rounds with 100 gr bullets. I ultimately gave up on this plan due to the load limitations, and went instead with a 6BR.

The sad thing is that the long magazine was only available on the 22-250. With the guns no longer available, the replacement magazine boxes are not available to swap. You could modify the shorter box as I did, but a lot of people don't want to go that far with mods.

Art how bad is the muzzle blast from that 18" barrel?

Howard: Here is the oal 6x47=2.485" a 6x45= 2.350" and a 223Rem is 2.260". How long is the magazine box? If rebarreling they should be able to cut the 6x47 chamber so that the bullet is close to rifling(throat cut shorter?) but the bullet would be seated deeper if needed. I have a Win 70 in 6TCU(same H2o as 6x47) with a 20" and there is no blast as the powders used (H335-N133-IMR 4198) are fast. I would not recomend the 6TCU in a bolt action rifle as that 40 deg. shoulder is like speed bump. My rifle (Win SA) will work with OAL of 2.290"+ in box and the 222RemMag (parent case of 6x47) is 2.80" OAL.