Leupold
I too have used Leupold bases and rings clear back to the old original Redfield days. In fact I'm still using Leupold adjustable bases on a custom Mauser that dates to the mid 50's (see photo).
I have never had loosening with the "dovetail front and pinched rear" as described,
About 20 years ago I began using Leupold Quick detachable rings/mounts. They don't loosen up and scope removal and re-attachment come back to original zero every time. I'm not sure the extra money for some of these mounts is worth the extra money. All the different Leupolds I've had have so far been failsafe. And that includes QDR's on a 416 rem mag.
I too have used Leupold bases and rings clear back to the old original Redfield days. In fact I'm still using Leupold adjustable bases on a custom Mauser that dates to the mid 50's (see photo).
I have never had loosening with the "dovetail front and pinched rear" as described,
About 20 years ago I began using Leupold Quick detachable rings/mounts. They don't loosen up and scope removal and re-attachment come back to original zero every time. I'm not sure the extra money for some of these mounts is worth the extra money. All the different Leupolds I've had have so far been failsafe. And that includes QDR's on a 416 rem mag.