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Posted: 5/13/2004 6:01:27 PM EDT
[#1]
You're right, Troy said; 14.5".
I think it was Troy. If it wasn't well then I'm hearing things. |
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Posted: 5/13/2004 7:31:19 PM EDT
[#2]
Yeah it should be 14.5" because that is what the M4 had in terms of barrel length in the SOPMOD package.
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Posted: 5/14/2004 6:21:20 AM EDT
[#3]
I sent Trijicon an email a few days back but haven't heard anything. If they did base it on a 16" barrel how much does it change the point of impact if you're using a 14.5"?
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Posted: 5/14/2004 6:52:24 AM EDT
[#4]
Very little. From the calculations I have been doing for my TA31F, which believe has the same BDC. What I found, when mounted on a 16-20 barrel and limited extent 14.5, the BDC is good for 55-75,77 grain bullets. Good out to at least 400-500 meters, sometimes beyond. It seems like the best BDC to have if you actually use the BDC. |
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Posted: 5/14/2004 12:00:39 PM EDT
[#5]
I think they did that so they could more easilly field them to A4's and M4's.
The difference is probably equivalent to one click of elevation at 600meters. The compromise is obviously slanted toward the M4. KAC admits a similar compromise between 20inch and 14.5 for their 600Meter BUIS BDC, maybe the military requested it? |
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