Think I need help. Decided to buy a Ruger Redhawk with 5 1/2-in barrel. Want to mount either a bushnell holosight or redot on top of it which requires a weaver type base. The only one I can find is by B-Square so far. These clamp on the barrel in the front. Are they any good, (they sure are ugly) or are their others out there. This model does not have the Ruger mount notches. Any ideas? Rick