No. A numerically "larger" gauge means a smaller bore diameter on shotguns. It is based on the number of lead balls it takes to make a pound, (12 - 12 gauge balls makes a pound, 20 - 20 gauge balls makes a pound), etc. The exeption is the .410 shotgun which is the bore diameter in inches.
Sheesh!
Thanks.
So the 1-gauge would be a pretty bad-ass weapon, I take it. :-)