Well, the nose length looks like it would work for a 30-30 and I know that the triple shocks with the same caneluer cuts in the bullet shaft handle pressure just like normal cup n core bullets, so the loads should be similar.
Personally, I don't see much advantage to this if you can use hard cast lead bullets. They're actually shorter for weight and you could go heavier with them.
These are just like the triple shocks/xbullets in their long length.
As far as the rifling stabalizing them - don't know for sure, but I suspect there'd be no problems, and the long bearing surface should give very good accuracy.
And the price is up there, but not too bad IMHO for something that you'll be hunting with - a 50 count box should allow for some load testing and still leave you with 30 rounds for hunting - which would last most several years...
Again, this is for the California crowd that needs a non-lead bullet. I think since they're Barnes copper alloy bullets that they'd be acceptable or approved?
Of course, there's also the 150 grain TSX bullet from Barnes for more money - but the 165 solid should give deeper penetration similar to heavier hard cast bullets.
http://www.grafs.com/product/183040