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12/11/2018 1:58:31 AM
Posted: 5/1/2004 6:56:29 AM EST
I've read some of the ammo-oracle. It mentions a typical "battle zero" for M193 is 250m.

Where should I be hitting at 100yds, to be zeroed at 250m? 1" high? 2" high?

20" chrome HBAR, 1:9" twist, 6500' altitude.

Link Posted: 5/1/2004 7:04:21 AM EST
Here, check this out...


You'll need to know a few things about the bullet to get it to work but it's really cool when it does.
I'll try to find out the ballistic co-efficient for the 193 and get back to you... I need to know this stuff myself.hinking.gif
Link Posted: 5/1/2004 7:08:50 AM EST
[Last Edit: 5/1/2004 7:21:28 AM EST by Reload-]
I just did a quick search... I think the coefficient of the m193 is... a drum roll please...


I hope I'm getting this right... anybody care to chime in here?
Link Posted: 5/1/2004 10:06:15 AM EST
Link Posted: 5/2/2004 6:37:54 PM EST
I think the ballistic cofficient of M193 is .243

Someone check the ammo oracle and see it thats right
Link Posted: 5/2/2004 8:06:31 PM EST
All you need to know about zeroing an AR15...


I'd have to say that the VAST majority of folks here (including me) use the "Improved Battlesight Zero". That's the 50 yard method Troy mentioned.
Link Posted: 5/4/2004 1:29:36 PM EST
I've seen the BC for M193 as .255, .250, or .243 depending on where you look. Using Winchester's ballistics for Q3131A I get .266 with the BC calculator here.
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