When I mounted an RDS at 12 o'clock on my SPRecce my first instinct was to zero it at 50 yards the same as my other red dots but I ran the math and realized that probably wasn't ideal for what I wanted. 0-50 yards things looked fine but after that the increased height over bore meant I'd be holding pretty low for 100-200 yard targets, which could be small pepper poppers or gongs. Below is 50 yd zero with 4.6" HOB, red being the hold point and the green circle being the approximate impact area.
Running the numbers for a 25 and 36 yard zero revealed they were pretty horrendous options:
I ended up settling on a 100 yard zero which coincidentally works out close to the same holds as a 50 yard zero that I would typically use with offset sights and lower 1/3 RDS mounts. Below are my holds using the 100 yard zero with a 4.6" HOB, zeroed with pretty standard 55gr ball, however under 200 yards it works pretty much the same with IMI 77 Razor Core.
Like most things it's going to come down to how you intend to use the RDS, if one doesn't perceive ever having the need to engage anything farther than the zero distance then go with God. I view the RDS as an alternate sighting system so I want it to be capable basically from 0-300 yards and why I went the way I did.
What distance are others zeroing their piggy back red dot?
Running the numbers for a 25 and 36 yard zero revealed they were pretty horrendous options:
I ended up settling on a 100 yard zero which coincidentally works out close to the same holds as a 50 yard zero that I would typically use with offset sights and lower 1/3 RDS mounts. Below are my holds using the 100 yard zero with a 4.6" HOB, zeroed with pretty standard 55gr ball, however under 200 yards it works pretty much the same with IMI 77 Razor Core.
Like most things it's going to come down to how you intend to use the RDS, if one doesn't perceive ever having the need to engage anything farther than the zero distance then go with God. I view the RDS as an alternate sighting system so I want it to be capable basically from 0-300 yards and why I went the way I did.
What distance are others zeroing their piggy back red dot?
