I've used all sorts of brands and models of riflescope, and the scopes that I've found to have reliable adjustments are the following:

- Anything NF
- SWFA SS Fixed and HD lines
- Bushnell Elite Tactical LRHS/LRTS/DMRII/DMRII Pro/XRSII
- S&B (no experience with newer production, so can't speak to that)
- Vortex Razor 5-20x50