This from the African Hunting Gazette:

If backed into a corner at gunpoint and forced to name my candidate for “most influential cartridge” of the 20th century, I would probably say it was the .280 Ross.

There is no shortage of candidates, and the .375 H&H would be my second choice. But while the .375 H&H has the most grandchildren, it was hardly the most influential. The Ross set in motion a quest for small-caliber, high-velocity performance that continues to this day. We can trace that influence through the .275 H&H, .270 Winchester, and 7mm Remington, right through to the over-long, over-wrought 7mm creations that are now raising dust and causing deafness.

The Ross’s standard load of a 146-grain bullet at 3,100 feet per second (fps) was the first commercial cartridge to breach the 3,000 fps barrier. That velocity instantly became the goal for others, and the benchmark for measuring every new cartridge to come along.

https://africanhuntinggazette.com/sir-charless-baby-110-years/

Of course, neither was a long reach since both are based on the 30 Govt '06. 

It does prove some lawyers have a remarkable and inventive imagination. It was unfortunate Newton couldn't imagine World War I. 

steve004 said

Tedk said

kevindpm61 said
Somebody can correct me if I'm wrong but, I think the 250-3000 was the first American cartridge to go over 3000 ft./s.  I believe it was the 280 Ross that went over 3000 ft./s first
  

Pretty sure it was the 256 Newton on both counts
  

The .256 Newton preceded the .250-3000 by two years I believe.  The .280 Ross came out in 1907 but of course it wasn't an American cartridge.
  

Per  “Cartridges of the World” top velocity for the 280 Ross was achieved with a 140 gr SP at 2,900 ft/s

fwiw Wikipedia also notes that the 280 Ross “was the first practical cartridge to reach the edge of 3000 ft/s muzzle velocity”

Tedk said

kevindpm61 said
Somebody can correct me if I'm wrong but, I think the 250-3000 was the first American cartridge to go over 3000 ft./s.  I believe it was the 280 Ross that went over 3000 ft./s first
  

Pretty sure it was the 256 Newton on both counts
  

The .256 Newton preceded the .250-3000 by two years I believe.  The .280 Ross came out in 1907 but of course it wasn't an American cartridge.

kevindpm61 said
Somebody can correct me if I'm wrong but, I think the 250-3000 was the first American cartridge to go over 3000 ft./s.  I believe it was the 280 Ross that went over 3000 ft./s first
  

Pretty sure it was the 256 Newton on both counts

steve004 said

kevindpm61 said
Somebody can correct me if I'm wrong but, I think the 250-3000 was the first American cartridge to go over 3000 ft./s.  I believe it was the 280 Ross that went over 3000 ft./s first
  

Well Kevin... Absolutely!  The .280 Ross was a very impressive development.  I am very familiar with this cartridge.  Ballistics, case capacity and bullet is very similar to the 7mm Remington Magnum.  The big difference is the .280 Ross came out 55 years earlier than the 7 Rem mag.
By the way, I've enjoyed the Savage photos and I could post a few myself, but I see there's a scarcity of .280 Ross photos so I can fix that.  Here's an M-10:

View post on imgur.com

The post Ross M1905 actions (i.e. the M1907 Scotch Deerstalker and the M-10 sporter) started in 1907 and very closely resembled the Weatherby Mk V multi-lug action that Roy came out in 1958.  The Ross action had no comparison as far as strength (as was proven by E.C. Crossman in his destruction testing of various rifle actions).  I recall Crossman took a .280 Ross case, filled it with a pistol powder (of the day of course). He filled it to the top of the case mouth and then used a bullet to keep compressing deeper in the case.  He then greased the case and fired it.  And he could not blow the action!  The rifle was damaged but the action didn't blow.  
  

For anyone wanting to see, here's what the multi-lug M-10 bolt looks like:

View post on imgur.com

JWA said
if you mean several of the .303 British I agree with you. 😉 but US Cartridge Company purchased WAY more than several single shots for testing purposes, I have "several" of them myself (but mine are all .22 rimfire).
I can add some to the upcoming Winchester Single Shot Musket "show and tell" at Cody (NOT a judged display) if you want to completely fill my sales table if there is interest?  That is the beauty of my old Dodge Cummins,, to paraphrase the Field of Dreams movie, "if you ask, it will haul" 🙂
Best Regards,
  

Please send me digital photos of your U.S.C.Co. marked singles shots with the serial numbers.  No need to pack your old Dodge Cummins with too many old Single Shots.

I can add some to the upcoming Winchester Single Shot Musket "show and tell" at Cody (NOT a judged display) if you want to completely fill my sales table if there is interest?  That is the beauty of my old Dodge Cummins,, to paraphrase the Field of Dreams movie, "if you ask, it will haul" 🙂

Best Regards,

Anthony said
Bert,
Is this from you're Survey pics, you've taken from Cody?
Very interesting!
 
Tony
  

I copied & saved the pictures from RIA's digital catalog when those rifles were sold in past auctions.  The rifles with the red tags on them were in the Peter & Patty Murray collection.  I had the opportunity to personally handle them back in the Fall of 2002. In the past 30-years years I have had my hands on at least a dozen of the Single Shot Test cartridge rifles.

In addition to the Single Shot rifles that Winchester used for their own inhouse testing and cartridge development, the U.S. Cartridge Company and Dupont purchased Single Shot rifles for testing purposes. The attached picture below is just one of several that was purchased and used by the U.S. Cartridge Company for testing cartridges.

Bert

Is this from you're Survey pics, you've taken from Cody?

Very interesting!

Tony

Bert

That would make sense, as the .25 Creedmoor seems to be pretty close in comparison. Not that I have experience with either, but it just stands to reason to me.

Tony

Bill, what would be the closest other caliber, that you would compare the 250-3000 caliber to?

I killed my first, and several other Deer at our PA, hunt camp, with a Savage 99, in the .300 Savage caliber, that worked very well for me, as a rifle loaned me from me future Father in Law, at the time, 50 years ago. Then my Wife bought me a .375 Winchester, and using the 200 gr. factory ammo, we lost count as several made it to the freezer with that tremendous brush gun, on our heavily wooded , and loaded with under brush property.

Tony