never owned or shot the 130g NBT's in 270, but I can say for certain that the 7mm BT's are hands down the best hunting bullets made for my applications (kill deer deader than stink).
Their performance is unbelievably predictable and repeatable time and time again on deer sized game. And accuracy is certainly one of the absolute best of the hunting bullets.
Keep impact velocity under 2800 fps, and it'll perform exactly like a 'premium' hunting bullet with controlled expansion and deep penetration. And they'll even open up nicely all the way down to 1600 fps impact velocity. There aren't many bullets out there which will perform so well under such varying impact velocities.
But push 'em too fast, and you better stick to broadside shots just behind the shoulder. And if you smack the shoulder at 3100fps+ impact velocity, it's not going to be pretty (softball sized wound channels, but only 8" or so of penetration)
I guess I'm up to around 100 kills with the NBT's, never lost a single deer, probably half were bang-flop DRT's.
And in today's economy, it doesn't hurt that you can buy factory 2nd's for around $10/50. (Actually, the last 6 bags of factory 2nds I bought for $7/bag of 50! )