Sierra also has a very good twist-calculation calculator (much more sophisticated than Greenhill) in their ballistics program.
I just ran a .25 130 Ballistic Tip (theoretical bullet, based on the length of a 115 BT multipled by the 130/115 weight factor) through the Sierra calculator, at a muzzle velocity of 3000, which might be a little generous. The answer was a 1-8" twist. This agrees entirely with what Shane said, which is not surprising.
Our new "friend" Buckeyespecial could also have obtained Sierra's ballistic program and used it to search for the result himself, but instead chose to ask his question on an open forum and then sarcastically question the answers he got, without having a clue about the backgrounds of anybody who was answering. I am also gratified that everybody else pretty much kept their cool in the face of such blunt rudeness.
