Has anyone built a .25 on a 7 ultra case?

Given that the Ultra Mag case is somewhat larger than the STW case I would say that the a 25 Ultra would be even dumber than a 257STW and that's going some! Regards, Bill.

Posts: 3857 | Location: Elko, B.C. Canada | Registered: 19 June 2000

Ignored post by Bill Leeper posted

Show Post

Saeed

Administrator

posted

Hide Post

FFg,

The Lazzeroni 6.53 Scramjet is based on the full length 404, so I would assume it to be a 25 Ultra, if there was one.

You can have a look at some data on the Reloading section for this one, might give you an idea of what it can do.

------------------
saeed@ emirates.net.ae

www.accuratereloading.com

Posts: 69667 | Location: Dubai, UAE | Registered: 08 January 1998

Ignored post by Saeed posted

Show Post

posted

FFg,
You can also check Ackley's handbooks and look up the .257 Condor and the .258 Condor.
The .257 was built on the 7x61 S&H case necked down and the .258 was built on the .300 WBY case necked down. I have one each of these barrels and one more made on the .378 WBY shortened and necked down. All of the brass is a pain to make and not much if anything has ever been gained. But boy can you use up powder fast.
Bill

posted

quote:
Originally posted by Bill Leeper:
Given that the Ultra Mag case is somewhat larger than the STW case I would say that the a 25 Ultra would be even dumber than a 257STW and that's going some! Regards, Bill.

AMEN Bill!!!

Please Wait. Your request is being processed...

Accuratereloading.com