Mr 45-70,
They did make a 270 and a 3006 carbine up until 2002 in the 7400. I have a NIB 7400 carbine in 280. It was a special run in 2003 of 255. I've been considering selling it. the 7600 carbine have been made in quite a few calibers, mostly special runs. I'm sure there is a 27o carbine out there somewhere. If you want, I can give you the name of a "rare Remington" dealer in Pa. who has one or two of everything. If he has one, his prices are really reasonable.