Show us your wildcats!

[Hamish]

Bump, looking for an update on the 8mm Carbine.

[Harry O]

I have a 30-40 Krag that is necked down to 7mm. The shoulder is moved forward and it is fireformed to have almost straight sides. It is chambered in a Ruger No. 3 that started out in 30-40 Krag. The internal volume is almost exactly the same as a .280 Remington Ackley Improved.

I also have a couple of cartridges that are not exactly wildcats, but they are (or were) almost impossible to get brass for, so I formed my own. The first one is the 41 Long Colt. I made cases out of .38 Special brass until Starline started making them. The other is the 9.5x57 Mannlicher-Schoenauer. I could use just about any 8mm Mauser or 30-06 parent case, but I have settled on .35 Whelen cases for several reasons.

[revolvergeek]

So NoZombies, whatever ended up happening with your 22/32 project?

[junkman1967]

I'll have to post a pic of mine when I get home. One is the "429 Ultra Express" made from a shortened .308, and the other is a 9mm long rifle, made from a cut down and necked up 223. Pics soon

[NoZombies]

So NoZombies, whatever ended up happening with your 22/32 project?

Not as much as I would like. I ended up with a lot less 'spare' time on my hands, and as a result, many projects have been postponed!

[MOcaster]

Neither are official or have guns but the first one is a 400 SOCOM/400 Miles/400 M&M. I haven't decided on the name yet. The second one is a 9mm-458 SOCOM. Both are necked down 458 SOCOMs. My play cartridge for the 400 had a 300ish grain bullet in it if I remember correctly. I made it with BTsniper's swaging die and a 38 special brass. The 9mm won't be a cast cartridge but all I had were cast 9s.
(Sorry for the sideways pictures)

[rking22]

Well ,if I can figure out the picture thing I will post my 30 Special.. Yeah another 38 special necked to 30 ,I wanted a 300 Sherwood equilivent . Put it on a TCR 83. Any more updates on the other versions of this thought ?

[SCHUETZENBOOMER]

My GP series of cartridges all based on the 8x57 case. L to R are 6mmGP, 250GP, 6.5mmGP, 270GP, 7mmGP, 300GP, 8mmGP, 330GP, 350GP and 375GP. Anyone interested in an Excel spreadsheet of chrono date please PM me. Just now working up loads for the .350GP and cast...which is why the cast boolits are shown in front of the .350GP. To date, I have built several rifles in all but the 270, 7mm and 300cals. I am having a ball with the .350GP and cast!

[Whiterabbit]

dumb question. for new cartridges and wildcatting, why ARE necks getting shorter? is there a distinct disadvantage to a long neck?

All I can figure is jacketed bullets don't need it and it eats into usable case capacity. Yes? Is there any other reason?

For example, if I am mulling over a wildcat, and I find I don't need lots of case capacity, length is covered, do I have any disadvantage to designing in a ridiculously long neck?

[Doc_Stihl]

I'll gather up some examples for some pictures but here's my current list:

.14 Eichelberger Flea - 32 ACP necked to .14 caliber. I can form .17 and .22 versions of this as well.
22 Cheetah Mark 1 - 308 BR case necked to .22 with little taper and a 40 degree shoulder
6mm Page Souper Pooper
6.5 U.F.O. - A 6.5 based on a .243 lapua case by Wes Ugalde. As far as I know I own the only set of dies ever made.
270 REN - 22 Hornet straight walled to .277
7x30 JDJ - Jones's take on the 7-30 waters improved
30 Merrill
338-08 AI 40

[Jacko.357]

35.303 I gave up on the 225 gr Sierra Projectiles, very accurate but too expensive. The Cast Bullet is a Cast Bullet Engineering 358250. Cast from straight wheel weights, air cooled, Lubed with White Label 2700+, Gator Checks comes in at 260 grains, sized to .359, 38 grains of ADI 2206 for 1885 fps. Plenty of scope for more velocity but it shoots so well and hits so hard I see no point Shot in a customised No1 M3 Lithgow. If I do my part this Rifle and Cartridge is a genuine 5 shot MOA outfit



I am thinking very seriously of having a Baikal IZH18 7.62X39 rechambered to 310PPC. Why ? Cause I can and one Wildcat is never enough

regards Jacko

[rattletrap1970]

I'd like to see a .25 auto necked to .22. Why? Cause it's neat. And I'd love to make it behave like a .22lr for an improvised 50 ft .22 indoor gallery match... Screw the unavailability and cost of .22 lr.

[Whiterabbit]

7mm whiterabbit



A guy can dream, for now. A guy can dream.

[hubel458]

585 HE (Hubel Express) After a while it may not be a wildcat.




A long straight belted 585 case- rim .654"- belt .654- base .634"--

mouth .607"-- case 3.26" long--rim can be rebated if wanted.Ed

[texassako]

I figured I would add mine to this list. A different .30-40 Improved than Ackley's. Holds a grain more water than my PPU 7.62x54r cases with Winchester brass. It still fireformed well Ackley style with a loaded round. I am also messing around with something like the .22 TCM in .25 caliber to feed through the magazine of a rebarreled Destroyer carbine.

[redneckdan]

dumb question. for new cartridges and wildcatting, why ARE necks getting shorter? is there a distinct disadvantage to a long neck?

All I can figure is jacketed bullets don't need it and it eats into usable case capacity. Yes? Is there any other reason?

For example, if I am mulling over a wildcat, and I find I don't need lots of case capacity, length is covered, do I have any disadvantage to designing in a ridiculously long neck?

The necks are shorter in an effort to squeak out every last bit of powder capacity possible. There is a theory based in the intersection point of the case shoulder falling within the neck, leading to increased throat life due to the brass taking most of the beating from powder gases. Longer necks are beneficial to us because they allow more bullet seated into the case without dropping the gas check below the neck. A longer neck also helps maintain bullet alignment, if you seat the damn thing straight to begin with.

[Whiterabbit]

well, glad I added a longer neck in my design then. I linked a pic above. I will try making it whenever a 7TCU die set falls into my lap I can cut down.

[Whiterabbit]

got a chance to play. My 7mm wildcat, next to the 223 parent.

[Whiterabbit]

OK, did some measuring and tweaking, the necks were WAY too long. This is the read deal, all trimmed up and pretty-like:

[thehouseproduct]

OK, did some measuring and tweaking, the necks were WAY too long. This is the read deal, all trimmed up and pretty-like:

Is this something akin to a 7mm TCU that would fit in AR mags?