Create A New Cartridge

[jerry]

How about a lengthened .357 mag? Aw crap. That didn't work, been done.

[JSnover]

How about a 1/2 scale .50 BMG rifle and cartridge?
Performance would be somewhere in the neighborhood of a .257 or .25-06 and it would be fairly easy for a kid to shoot, since even at 1/2 scale there would be enough mass to help hold everything still.
I dunno, call it a Baby Barret or a .250 BMG, make a neat father and son combo.

[bullhunk]

neck down a 220 swift to a 20caliber call it the 200 swift

[wraco]

Originally Posted by Lng Rng

Sounds a lot like the 270 WBY to me.

Not even close. -- The 270 wby preceded the 300 wby with the 270 wby having a case capacity of a 257 Roberts. Not much better than the 7x57 Mauser. The 270 wby has never enjoyed the popularity of 7mm and 300 mag as others have.

The 270 Winchester has been a favorite for a long time but can fall just a tad short on those long shots in open country and that one shot you may get at a trophy sheep that you've spent years searching for. The 270 Magnum, using a full length 300 H&H case, may be the perfect medicine for that long awaited shot.

The problem with large capacity magnums, burning a large charge of powder in a slim, smaller bore barrel is they heat up right quick. The long tapered 300 H&H case is very efficient with powder. You get more for less. Compare the velocities of the 300 H&H to the 300 win mag and the 300 wby mag. The shorter, stout, wide cases, at the mouth, use more powder per fps. than a long tapered case. Less powder would help to keep the heat down in the barrel, lowering erosion to powder gases. Three shots a minute, with the 270 wby mag is about max, but with the 300 H&H case you might get 5 shots a minute. Not a big deal when you're hunting, but an asset at the range. The long tapered case feeds through a rifle like a hot knife through butter.

Regards:
Rod

[Lng Rng]

The .270 Weatherby is based on a blown-out .300 H&H Magnum case shortened to fit standard length actions.

The 270 Wby has a case capcity that exceeds 85 grains, but most people load it to the mid 70's- which describes what you "created."

[JSnover]

Originally Posted by JSnover

How about a 1/2 scale .50 BMG rifle and cartridge?
Performance would be somewhere in the neighborhood of a .257 or .25-06 and it would be fairly easy for a kid to shoot, since even at 1/2 scale there would be enough mass to help hold everything still.
I dunno, call it a Baby Barret or a .250 BMG, make a neat father and son combo.

A half-scale copy of the Barrett M82, chambered for .250-3000 Ackley Improved: "Little Big Man"

[wraco]

Originally Posted by Lng Rng

The .270 Weatherby is based on a blown-out .300 H&H Magnum case shortened to fit standard length actions.

A 270 Mag using the full length 300 H&H case would work for me, for reasons I explained. A pre-64 Model 70 in 270 Winchester can be rechambered and the receiver altered to accept the 300 H&H case, adding no extra weight to the rifle, giving the 270 the little extra punch for them far reaching shots.

The original theme of the thread was a new cartridge, not what was similar or what one thinks would replicate it.

Regards;
Rod

[Don357]

Somebody came close but I was thinking about using a .50BMG case necked down to a .223 and calling it a .223 disentegrator. Because the bullet would probably disentegrate at factory loadings.LOL

[JSnover]

Ha! Probably right, Don.
Maybe if the bullet was solid copper or bronze it might hold together after leaving the barrel. But how long would it take to burn the throat out of that thing? Yikes!

[Drygulch]

Originally Posted by BattleRifleG3

There's a family of cases that haven't been made yet but I think may be and should be.

They made the Remington Ultra Mags, taking the standard magnum bolt face and using it as a rebated rim on a wide cartridge the length of the H&H and Weatherby mags.

Then they shortened it to the length of the 308 and made the WSM and Short Action Ultra Mags.

Now, with the 375 Ruger, there's a rimless, beltless, magnum bolt faced cartridge the length of the 30-06. A 35 caliber version would OWN the 35 caliber magnums, especially with Leverevolution type bullets, and a 458 caliber version would OWN the 458 caliber magnums. No one wants a 460 Wby if for no other reason than the horrendous price of the rifles and ammo, and even brass, never mind the immense recoil. A standard length round with the modern and popular rimless, beltless, shouldered case would be something fresh and interesting.

And then there's the conspiracy against 6.5. For pete's sake, make a 6.5 WSM, WSSM, or RSAUM. It makes too much sense not to.

And I wonder if an 8mm Whisper/Fireball would find a niche.

Speaking of the 6.5 -- my buddy is looking at creating a wildcat, so I recommended the Chek 7.62x45 case. Between the 308 and sks round. Of course there are many more out there. I,m waiting for a factory 6.5x250, sounds like fun.

[utahvarminter]

338 Lapua necked down to .30 - 300 Psycho.

[tbonecpk]

take a .30 cal bullet prefferably a .150g BHP and stick it in the case for the .223 call it the .30 Specter