Les,
I have the VVCG 13" 22 Mag barrel and use it quite a bit. It groups them in a touching little cloverleaf at 25yards, and in an inch circle at 100 yards. I have the Weaver 1.5-4X on it and it's great for the caliber. I was previously using a Swift 2.5X on it and it worked fine also.
This is my "lap gun" when driving between the PD fields on a very large ranch. I take shots across the mirror and have connected out to 125yards with it. It likes the 34 Win Supremes and the Remington V-Maxs and both shoot at the same POI in this setup. CCIs opened up the groups and shifted the POI, so I leave em alone.
Joe