They work real well, whacked a WT deer at Dusk with a former FX-3 German #4 at 275 yds on my former K1-A 6.5x55.......punched a 1.1" group at 200 yds........long ago used a 700 Classic in 6.5x55 with a M8 6x42 with 'Heavy Post Duplex' at just 40-50 yds in very thick brush at dark thirty.......another M8 Duplex on a Ruger 1B 270, whacked one at Moonlit Dawn......at 15 yds.........I could go on........but they have worked for me on many rifles, conditions, and ranges. Great eye relief, light, plenty bright......not much to complain about.
These days I run 36 and a 33mm..........they work too
