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Durkin Tactical Franklin Armory
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Posted: 9/19/2023 5:14:23 PM EST
M855A1 Trajectories

M855A1 from a Colt 14.5” M4A1

Muzzle velocity = 2949 FPS

G7 Ballistic coefficient = 0.149

Standard atmospheric conditions











….
PWS
Link Posted: 9/19/2023 7:17:52 PM EST
[#1]
Cool data
Link Posted: 9/19/2023 9:18:00 PM EST
[#2]
@Molon

Thank you..!!!
Link Posted: 9/19/2023 9:23:11 PM EST
[#3]
Thanks  Molon! Truly appreciated.
Link Posted: 9/20/2023 3:03:23 PM EST
[#4]


....
Link Posted: 9/20/2023 9:49:43 PM EST
[Last Edit: TGH456E] [#5]
Any chance you could post a chart with a 100yd zero out to 600yds with a M68 CCO offset?
Or tell me where you are getting these from?
Link Posted: 9/21/2023 6:45:36 PM EST
[#6]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By TGH456E:
Any chance you could post a chart with a 100yd zero out to 600yds with a M68 CCO offset?
View Quote View All Quotes
View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By TGH456E:
Any chance you could post a chart with a 100yd zero out to 600yds with a M68 CCO offset?

Do you know the height over bore?




Originally Posted By TGH456E:

Or tell me where you are getting these from?

Any decent exterior ballistic program can do these calcs.

...
Link Posted: 9/22/2023 5:47:24 PM EST
[#7]
Link Posted: 9/22/2023 10:40:56 PM EST
[#8]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Molon:

Do you know the height over bore?

Approx 2.75"



Any decent exterior ballistic program can do these calcs.

Thanks.......I'll look around.  This is very relevant for me right now.

...
View Quote View All Quotes
View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Molon:
Originally Posted By TGH456E:
Any chance you could post a chart with a 100yd zero out to 600yds with a M68 CCO offset?

Do you know the height over bore?

Approx 2.75"


Originally Posted By TGH456E:

Or tell me where you are getting these from?

Any decent exterior ballistic program can do these calcs.

Thanks.......I'll look around.  This is very relevant for me right now.

...

Link Posted: 9/28/2023 5:56:26 PM EST
[#9]
Originally Posted By TGH456E:

Any chance you could post a chart with a 100yd zero out to 600yds with a M68 CCO offset?
View Quote




....
Link Posted: 9/29/2023 11:49:54 AM EST
[#10]
Thanks!
As always I truly appreciate your posts............ well done and well thought out.
Link Posted: 10/11/2023 2:15:55 PM EST
[#11]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By TGH456E:
Thanks!
As always I truly appreciate your posts............ well done and well thought out.
View Quote

De nada.  

....
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