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Old 05-17-2012, 11:18 PM   #11
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Zero at 50 yards will be 1-2" high at 25 and low at 100. Correct?

I zeroed my carbine RDS at 25 yards and iron sights at 50.

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Old 05-17-2012, 11:30 PM   #12
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Nope, the opposite.

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Old 05-17-2012, 11:45 PM   #13
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Q and Jon what did you think about the 36/300 that was discussed on that DVD?

jjfuller1, I would zero hers at whatever requires the least need for holdover. I'd think it would be easier for her.

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Old 05-17-2012, 11:59 PM   #14
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i was thinking zerod at 50yds. just wanted to see if there were any other ideas. at 100yrds she'll only be a couple inches high

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Old 05-18-2012, 01:24 AM   #15
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Quote:
Originally Posted by AgentTikki View Post
found a chart from sadefencejournal.com for m855....
Kinda odd that if fell off at a 12" barrel length , also almost hard to believe only 500-550 fps difference between a 7.5" barrel and a 16" barrel . I would have guessed more around 800 fps to be honest , I will take the chrono out with me next time I go and I will try a couple diferent brands and write them all down on each barrel
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Old 05-18-2012, 02:33 AM   #16
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My C-more is set at a 25 yard zero. I know my trajectory will equal my POI/POA error out to 375 yards.

here's a diagram of my reasoning. I teach both the 50 and 25 yard zeros. I choose the 25, but let the student choose his/her zero.

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Old 05-18-2012, 04:40 AM   #17
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Q and Jon what did you think about the 36/300 that was discussed on that DVD?

jjfuller1, I would zero hers at whatever requires the least need for holdover. I'd think it would be easier for her.
I haven't gotten that far yet! Off the top of my head it doesn't add up.
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Old 05-18-2012, 04:54 AM   #18
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Originally Posted by Fixer
My C-more is set at a 25 yard zero. I know my trajectory will equal my POI/POA error out to 375 yards.

here's a diagram of my reasoning. I teach both the 50 and 25 yard zeros. I choose the 25, but let the student choose his/her zero.
I like this image. Would you happen to have 1 for a 50 yard zero?

I'm currently zero'd at 25 but am not completely set on it. I gonna try out a 50 yard and see how I like that.
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Old 05-18-2012, 05:02 AM   #19
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I haven't gotten that far yet! Off the top of my head it doesn't add up.
I guess it's a Marine thing. It's supposed to zero your AR so that there is no holdover out to 300-400 yards. That section is very interesting.
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Old 05-18-2012, 10:05 AM   #20
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I guess it's a Marine thing. It's supposed to zero your AR so that there is no holdover out to 300-400 yards. That section is very interesting.
well, sort of. you are correct that we used 36/300 zeros..we sighted in at 36 yards. but for shooting, the closest qualification target is 200 yards. goes 200, 300, 500. we did other training with shorter distances, however we always used the same zero... incorrect on holdover. we learn to make sight adjustments
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