iloveto4x4innc , I don’t have a Weaver Grand Slam but read a good review on this scope... At some point the Grand Slam is compared to the Leupold vxii and I found it very interesting...Next time I’m at a sporting good store, I’m not going pass them buy with out looking at them..Check this link for more information. www.chuckhawks.com/grand_slam_scopes.htm

Hope this helps you out and good luck with your purchase..