What cartridge for high speed 30 caliber

Just throwing it out there I don't know where it falls with some of these other 30 caliber cartridges but what about the old Lazzaroni warbird?
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Here is a list of 30 caliber cartridges that Sean carlock made up to compare his 300 terminator too.
 

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I saw a post by Pro 'swamplord' about a cartridge he designed. It is supposed to have the performance of a 300 Rum in a case shorter then the 338 Rum. On a magnum bolt face. Not lapua.
If it performs as advertised it would be a solid choice for the 245 and 250.
 
I really don't mind just doing a rum. The one I built with my match reamer have shot fantastic. I just don't know if it will reach 3000 fps with a 250. I will use at least a 30 inch barrel that is 1.450 dia. The gun weights 77 pounds right now so recoil won't be a problem. I just think the bc of that bullet will be a winner at 1000 yards. My wsm barrel shoots a 210vld at 2875 and my 6.5 Creed light gun shoots inside of that by 6 inches in a 10mph crosswind. The 250 at 3000 fps will be 13 inches less than the wsm in a 10 mph wind. 13 inches is alot.
Shep
 
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" Something wicked this way ... " scratch that ..
It's already here ...

Question ...
What big game hunting cartridges have a bit more powder capacity than the 300 RUM, 338 EDGE & the 375 RUM ?
All with case length much shorter than those 3 and even shorter than the 338 RUM !
suitable for repeating bolt action rifles with high bc hunting bullets, works on the same boltface, NOT 338 Lapua/Norma diameter and completely safe to chamber in Remington 700 & Winchester 70 actions ?
Also add super strong factory mfg brass with proper headstamp, available and made right here in the good 'ol USA !

Reamers, brass and dies will be available to gunsmiths and shooters all over the US right off the machines ..

See pics for my new family

stay with me, more info coming

Pro Martusheff aka Swamplord

That's copied from his FB post. In a few of the reply's he says max published book loads for the rum are starting loads in the Razor.

Regards, Branden
 
Kirby sent the 240gr SMK to 3560 in a 300 Allen magnum. Cheytac parent case. That 240 has a huge baring surface compared to the more modern bullets.

300 Rum, 300 Norma and the improved version are the best comprise in performance, ease of components and barrel life
 
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