.338 STA

According to Whidden, they are not accepting orders for die sets including the hydraulic forming dies.
Yes, IIRC., that just happened not too long ago. A few die makers will do it in special order; you must call them. On my last custom build, I had a sizing reamer made, and my GS custom-made all my dies, including a hydraulic-forming die, using a Newlon blank die and a Whidden plunger kit.

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Has anyone played around with a round like this or on an .375 mag case. I have one called a .338-375RR. Runs with or just bit ahead of a 340 wetherby.
I've done some more research and close as I can figure this case is almost if not the same, as a 338 Jarrett.
 
This was Remington's loss opportunity. The .338 Edge is what the .338 RUM should have been, and Shawn Carlock/DE quickly realized it and started building/marketing it.
I remember reading about why remington went the route they did for the 338 RUM. I don't remember all the details, but they did have a legitimate reason.
 
I remember reading about why remington went the route they did for the 338 RUM. I don't remember all the details, but they did have a legitimate reason.
Remington designed the .300 RUM in 1999 and the .338 Rum in 2000. Shawn Carlock was smart enough to capitalize on Remington's SNAFU and built the .338 Edge (.338/300 RUM, .338 Ultracat) in 2001.
 
Remington designed the .300 RUM in 1999 and the .338 Rum in 2000. Shawn Carlock was smart enough to capitalize on Remington's SNAFU and built the .338 Edge (.338/300 RUM, .338 Ultracat) in 2001.
I know all of that. What I said was that Remington actually had a legitimate reason for the way they did it. I can't remember all the details since it's been so long since I read about it.
 
I cannot tell the shoulder angle, but it is pretty darn close.
I talked to Brian at Jarretts today. Gave him the measurements of the case. Regardless of what my gunsmith stamped on the barrel, it's a .338 Jarrett. Case is identical to what they have on the print. It is a 40° shoulder. He gave me some starting loads and said they have lots of 300 Jarrett brass if I can't find any 8mm mag.
 
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