I only have one Leupold, but it is not a target model. It's a 4x33.
I have never used Leupolds on any of my target rifles. I have used Bushnell for years. I only have three target rifles left now. Two have 4200 6-24x50s. One is on a 222 Rem. The other is on a 308. The third is on a 303, and I use a Bushnell 10x40.
I have a varmint 6x45mm in a Choate stock. I am using a Mueller 8-32. I also have an 8-32 on a 22LR for postal (now email) matches. I have a Burris 6.5x20 MD on the shelf.