I have one here, but I'm running out the door right now. I can post measurements later today.
I don't have a standard Rem barrel here for comparison pics though. My other Remington has a Rock #3 on it.
Here's a pic of the rifle I have with the KS Magnum barrel, she's the rifle on the right:
The rifle on the far left is a Brux #3, middle is a Bartlein #2.
The KS Mag is getting rebarreled this winter, I chose Pac Nor to do the work because I wanted it reblued (CM steel), and I wanted them to match the contour so I don't need to do any stock work. It's a 7 Mashburn right now and it's being rebarreled into a 7 Mashburn.