Speaking of barrels....

[earl39]

No, it makes it a .270- ....that's the "chambering"

Depends on what case you put behind the .277 inch bullet, and how the chamber is reamed.

Example, I shoot a 7mm.-08.

It's got the same 7mm (.284) bullet, same as any "7mm" rifle, but it's based off of the .308 cartridge, necked down for 7mm bullets instead of the .308 bullet...

These are some .270 wildcats, I'm sure there's more...

270 (.277")
270 IHMSA
270 Winchester Ackley Improved
270 WSM
270-300 Winchester Magnum
270-300 Winchester Magnum .309 neck
270-300 WSM
270-338 Winchester Magnum

tobnpr i believe frank was using a bit of sarcasm and joking around in his first line there.

[stangfish]

None of the above. You are now the proud owner of a Frankensavage