Home Forums Hunting & Shooting Custom Rifles & Wildcats You built your own wildcat round?. Sticky or Existing Thread?

Jim Cloward built both a .30 and .338 off the 8mm RM in the early 90's The 338 was called the 338 Super, You could use either 8mm sized or 340 bee cases fireformed. Sound like the same basic case.
I had one on a pre-64

Sounds to me like three or more velcoity whore wildcatters came up with about the same idea at about the same time, very shortly after the 8mm RemMag and 7mmSTW rounds started gaining some traction. Great minds often think alike!

I have an interesting 35 cal wildcat built on a blown out and necked down 375 H&H case. Case Length is 2.680 with a shoulder length at 2.315 at 28.75 deg shoulder angle. A 250gr Swift or nosler will go north of 3000fps, propelled by 88gr of RL19. The reamers were design and made by a toolmaker, who wanted the ultimate Elk rifle (his words) about 25 years ago. He built one rifle for himself and then lent the reamers to the guy who built the rifle I have. It is built on a pre 64 M70 mag action with a Kreiger barrel.
This gun has been to Africa and shot plains game with the original owner. I bought the rifle from him.
You shoot this rifle 5 rounds in a row and you know you have shot a gun, if you know what I mean.

Steve692,

The original wildcat I used was developed by someone else. I have no idea who. It was a .30-378 Wea about 1975. I don't know how fast it propelled a 180 grain bullet with 118 grains of H870. Too much recoil. The next was another developed by someone else; a 7-.300 Wea. Next was a 7-8 Rem Mag, now called 7STW. The only one left has 7mm Coyle Wildcat stamped on the barrel.

I think about here is where I had a 8mm Remington Mag necked up to .375.

After that I made a very wild wildcat. It is based on the .348 Winchester case. It didn't work so I had the chamber cleaned up to .378 Wea necked to 7mm. The case is 2 1/4" long and has a 40* shoulder sporting a 1/4" long neck. The capacity matches the .300 Weatherby.

After that I went the other direction and blew out a .220 Swift. The shoulder was blown forward leaving a 1/8" neck above Weatherby looking shoulders. The next was a .243 necked to .224 with a 40* shoulder. Somewhere in there I did a .22-6mm Rem.

There might me something I forgot. My present wildcat is a .257 SLR. The original barrel was not accurate so it is at Pac-Nor. I hope to get it back by Oct.

I just remember the first wildcat was not what you are talking about. But in 1964 I had a .30-06 Ackley.

Mule Deer also had the B-29, what a cartridge...

The .334 OKH is very similiar, if not identical to your cartridge. At the time they were working with the .333/.334, they were using bullets of .333 dia from the .318 Westley-Richards.

I have a 35 Wade Magnum. I didn't build it but it is what I would have built. It's between a 350. Remington and the 358 Norma Magnums and has a 35 degree shoulder with a long neck.

35 Wade Magnum (loaded) and 338 Winchester Magnum

Did it not shoot accurately enough for your tastes, or simply not live up to your claims of magical 257 Weatherby velocities?

I just have ideas... somebody with the ways and means should build a 243 the way it was meant to be, based on the 222, just scaled up in proportion.

interesting...i did a .358 WSM (on the 7mmWSM case) that is the short action equivelent

.350 RM on the left, .358WSM on the right

I drew up my own cartridges about 12 years ago. Because of the money needed my idea just sat. I just bought 2 consecutive serial number FN comercial actions. I just picked up a NOS Douglas 6.5 blank. I'm looking for an 8mm blank. I have price quotes for reamers from Dave Manson I can and I'm silling to afford. I have a price quote for form and reloading dies from Dave at CH4d I can and I'm willing to afford. This is my first wildcat that I designed. I have several obelete cartridges, which can me like having a wildcat. I'm active duty military and currently deployed. When I get home, wild catting is on!!

Good luck Mausershooter! And come home safe, OK?

Tell us more about those wildcats. More than once I have had a wildcat idea and someone has already BTDT in some fashion. Lots to love about the 6.5 bullets and the 8mm's are much overlooked.

Steve692,
Several years ago I developed a passion for 30-30Win. cases necked down for my steel silhouette handguns and my Ruger varmint rifles. It started back in the 80's with a 14" TC barrel in 7 TCU that I had rechambered to 7 Int. Rimmed. Then in '94 I had a Ruger No.3 rebarreled with a Shilen barrel in .219 Wasp. This post from 09 shows the rifle and the 30-30 based wildcats that I loaded for then.
http://www.24hourcampfire.com/ubbthreads/ubbthreads.php/topics/1252702/30
I traded for a No.1b .220 Swift in 07 and decided to rebarrel it to a cartridge of my own design. I loved the .219 Wasp but wanted a little more powder capacity. I moved the shoulder forward .125 and changed the angle to 35 degrees, made the neck .270 long and .250 dia. Case length is 1.900 and it holds about 35-36 grains of powder. JGS made the reamer with .040 lead or freebore. I named the cartridge .219DW PDK, DW are my initials and PDK is for prairie dog killer. Its killed a bunch of them with 50gr V-Max at 3750fps and 55gr NBT's at 3650fps out of a 14" twist Shilen.
My second .219DW PDK is the No.3 that was a .224BRM. It now has a 8" twist Shilen and I'm shooting 75gr A-Max's at 3150fps with 34.0gr H4350.

The case on the left is ready to fireform with a 53gr V-max and the right case is fireformed and loaded with a 75gr A-Max.
Here's what it was built for, long range PD's. It's the No.3 on the left on the table.
This pic was taken in Montana this June, the next day I hit one at 709yds with my last shot before heading home. Had hoped to try at 1000yds, but didn't have the right conditions this trip.
My other wildcat that is my design is the .204 Wasp. I left the shoulder at 30 degrees and in the same location as the long version of the .219 Wasp. I made the neck .232 dia. and .250 long for a case length of 1.770. I had PTG make the reamer with .020 freebore.

This pic shows the steps from 30-30 to fireformed .204 Wasp. I use a combination of form dies that I used for my .219 Wasp and my .219 Wasp neck die that JLC Precision modified to use bushings.

This No.3 was my .219 Wasp, but after 6000 rounds I had it rebarreled to my second .204 Wasp. The barrel is a 11" twist PacNor target weight. The case is loaded with a 39gr Blitzking at 4000fps. My No.1 .204 Wasp has a Krieger 11" twist and now has 1400 rounds through it including two PD hits at 634yds in May,09 in S.D. Here' the .204 No.1 with one of the PD's.

My wildcats won't do anything that you couldn't do with a .22-250 or a .204 Ruger, but they're my design and they are exactly the way I want them. I spend a lot of time thinking about designs, forming brass and load testing, but that's what I like to do and consider it my hobby. Hope I didn't ramble too much, I'm not much of a writer.
Dave

I never heard of anyone doing a 22x47 lapua until I had already burned out a couple barrels. The day I first saw the 6.5x47 lapua case I ordered a 22x47 and 6mmx47 reamer. I have had several reamers built for other rounds including a .375-.416 barret. Some worked great others not so much but I have had fun with every one of them.

219DW, GREAT post and I totally dig those wildcats! Well thoguht out and soud designs, especially for single shots. Please do chime in here more often. Great shooting on those PD's, too.

And that be the point of it all, fun!

Got a pic of that 22x47 round? How does it compare to other hot rod high capacity 22 CF's?

I'd like to do a 338 remington Ultra case necked down to 30 cal, blownout with a weatherby double radius shoulder or maybe a shoulder like Mic Mcphersons line of cartridges.

Not much in the way of facts and figures yet but this is my first and built to hunt with a 700 Rem within the regs of Indiana's "357 minimum bore , 1.8 inch brass length maximum" rifle round restrictions. (new length for 2012)

Cant help it.....Im a Remington 700 (and versions of ) nutcase. lol

Shown next to the parent round, the 350 Remington Mag, is "my" 350 JR round. A simple set back the shoulder and trim to legal length. I chose to keep the factory neck length over tweaking a few more grains of powder from it for simplicity and lack of any REAL need for more capacity for whitetail.

Built for my use, and a pretty reasonably priced conversion with simple reloading die altercations and lots and lots of 1x fired belted mag stuff around to resize in the shortened 350 RM trim die...it will be more than any whitetail will require to cleanly dispatch at longer ranges than Ill need to shoot.

A bit higher psi case/chamber than the 358 advertised pressure ratings this round....... MIGHT.......give me a little more to go for if I wanted but Ive not built it to be any kind of super lazer trajectory bullet shooter but more for a legal round easily made and hoping for a pretty efficient end result.

Be a few weeks before I can finally get it all here and get some loads sorted out and test velocities and trajectories......BUT I KNOW IT WILL SHOOT FLATTER THAN A SHOT GUN SLUG...... and NOT KICK AS MUCH EITHER! lol

God Bless
Steve

That's way cool! Someday I'm gonna have to have an IN legal rifle built. Keep me posted on the performance of that once you get to shooting it.