Yes, they do work. They return to zero when pivoted,

I have had them on my go to 270 for decades and on a couple 10/22 also.

I have two sets available with bases for Savage 99s and if anyone interested P M me

Tim

"The significant problems we face cannot be solved at the same level of thinking we were at when we created them."
Albert Einstein

At Khe Sanh a sign read "For those who fight for it, life has a flavor the protected never knew".