scope mounts

Everyone I've shown this rifle to has no clue what mounts these are. I was considering changing the mounts to picatinny, but curious if its a good system and if its worth keeping these mounts.

For sale are my Warne Mountain Tech 30mm Medium rings. These are 1.00" centerline height and weigh 3.9oz for the pair. They mount to any 1913 Picatinny rail and have Stanag spec clamps. They use the classic 65 in/lb 1/2" nut for easy, secure mounting, and the clamp screws are t15 torx. I do...