Originally Posted by
Bama Man
The 260 Remington is also known as the 6.5 A-square and it would have been designated that if Remington had not submitted the 260 Remington also.
It was originally a necked down .308 and became a very popular wildcat cartridge until Remington made it their own and SAMMI went along with Remington, other than A-square.
As far as necking: keep it to safe spots where the police or parents can't find you. :) oh, wait, wrong kind of necking, I have a 256 Newton that again is a wildcat cartridge, and can be formed from 30-06 cases.
HOWEVER; I have been advised by the man that built the rifle,who is an older wildcatter, that it is more preferable to produce the cartridge from 25-06
cases instead, as the brass needs to go somewhere, and it is better to stretch the kneck than to squeeze it down and ream it.
Just my 2 cents, and what I was told. I'd stretch out the .243. and, check Graf and Son for brass, they often have great sales on brass, but even if they don't, I have never seen them oversold in what I bought.
My Newton is like your building, a fun bench rest machine, built for accuracy.
My Newton is a 1500 Smith-Wesson, scoped out with a single power 4X32
Leopold.
Unfortunately, it actually was a gift to my wife by my gunsmith friend, But she lets me go out and play with it.:)