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

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05 June 2001, 16:31

<FFg>

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

I heard a rumor that Rem was considering a .270 on that case. How would a .25 on the ultra case compare with the 257 STW? Thanks!

05 June 2001, 18:15

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.

05 June 2001, 20:10

Saeed

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

06 June 2001, 06:23

<Bill Tompkins>

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

08 June 2001, 11:01

<Mike M>

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!!!