Nothing, but I'm glad you brought it up. I checked out the website and read the info. Looks to me to be the same bullet, with a new mysterious name for marketing purposes only. They say it themselves, same profile, inside and out, same load data....so I say, what's the difference other than now you call it the Scirocoo II??
Nevertheless, it will copper foul the bbl more than some bullets as it's jacket is solid copper, however, once you find a load, it is a very very accurate bullet and it hits hard. I like it.
I killed a black bear at very close range with a 180 from my .06 and was warned that it "pancakes" to easily thus penetration is lacking...to that I say BS. I punched through that bears shoulders and the bullet made a coke canned size hole in the ground.
I'm currently using the 180 in a 300 RUM, and .06, and the 130 in one of my 270s. In the 270, the Scirocco smoked the AB and IB bullets and the SST and Btip.
Another piece of info I found to be interesting was from the new Barnes bullets DVD. They compared the TSX to many other hunting bullets including the Scirocco. The latter did penetrate less in the gelatin at 100 yards but the indicated trauma was most impressive, much more impressive than the TSX, NP, Sierra, etc. AND it still managed to penetrate 23 or so inches.
Give them a try and keep GOOD bore cleaner handy as they will foul equally to Barnes bullets.