22-rimfire
Member
I generally sight in centerfires 2" high at 100 yds and scoped 22LR rifles at 50 yds. Some of the low powered scoped ones are sighted in at 25 yds.
At what distance do you sight in your scopes?
- Thread starter radshooter
- Start date
- Status
Dr T
Member
trstafford: Thanks for the links.
I use 3" high at 100 out of a combination of convenience and laziness. But the description of the pipe is quite useful. I have used it to explain the concept of field ballistics to several nephews.
I use 3" high at 100 out of a combination of convenience and laziness. But the description of the pipe is quite useful. I have used it to explain the concept of field ballistics to several nephews.
BrocLuno
Member
Most of mine are sighted 1" high at 100 yds. Hold PB out to 200 and I don't shoot stuff beyond 200 - just my personal preference. Except for my 22-250 which is sighted 1 1/2" high at 100 and I'll shoot out to ~300 if I'm feeling spunky. Older eyes and body do not hold as steady as when I was marching around with a Mattel Rifle 
45crittergitter
Member
I only use the MPBR method, considering the size of the intended target vital zone.
I zero conventional cartridges like .223 and .308 at 200 yards, by sighting them in on a 100 yard target and knowing (using a ballistics calculator) how high they should be hitting at that range, with a 200 yard zero. I will then later try some 200 yard shooting to verify the zero. For my M1A, which has meters on the rear sight, I use a 200 meter zero.
The zero, of course, is independent of the sight-in range. It is where the bullet crosses the line of sight for the 2nd time. The sight-in range can be any range, doesn't matter, as long as you know what that range is. However since (I think) most scopes are set to be parallax-free at 150 yards, that is actually the most accurate range for sighting in. If I use a different sight-in range, I take care to keep the crosshairs centered in the image, to eliminate parallax as best I can.
The zero, of course, is independent of the sight-in range. It is where the bullet crosses the line of sight for the 2nd time. The sight-in range can be any range, doesn't matter, as long as you know what that range is. However since (I think) most scopes are set to be parallax-free at 150 yards, that is actually the most accurate range for sighting in. If I use a different sight-in range, I take care to keep the crosshairs centered in the image, to eliminate parallax as best I can.
Last edited:
BigN
Member
Zero everything at 100 yards (for ease of walking) and then read ballistics tables for the load and it'll tell you how high to hold at 200, 300, etc...We're only talking about maybe a 2" hold high at 200 yards so it's not a big deal.
- Status
