I can say that i shot a fine Antelope buck with my 270Win caliber rifle at 403 paces in Wyoming.I have seen this caliber make many kills from that distance on in to 35 yards.It all depends on the game animal hunted,and most important your rifle skills.
Impossible to answer with the maker's name and the serial number.
It's the caliber of the cartridge it fires.
Good rifle, good caliber for most uses. Did you have a specific question?
Uses .277 bullets
270
The .270 has MUCH more energy than the 30-30.
In excess of two miles
100-500 USD
Generally speaking, no. You can only fire the caliber for which the gun is chambered. There are some exceptions, but not many.
You have a browning a-bolt rifle chambered in .270 winchester caliber.
300m or so
Some law enforcement agencies have used the .270 as a sharpshooter's weapon, but it was never military issue.