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Posted: 8/28/2004 7:27:55 PM EST
Hello...

Can somewhat point me in the direction of what the trajectory of a 55gr bullet is with a 16" barrel out to 500m... with a 50meter zero?

THanks!

Link Posted: 8/29/2004 8:43:53 AM EST
About +1.5"@100m
- .5"@200m
- 10"@300m
-30.5"@400m
-66" @500m

Based on a BC of .243
and a MV of 3200 fps
and HOB of 2.5"

Go to here www.handloads.com/calc/ and run some number for yourself.
Link Posted: 8/29/2004 8:49:29 AM EST

Originally Posted By inkaybee:
About +1.5"@100m
- .5"@200m
- 10"@300m
-30.5"@400m
-66" @500m

Based on a BC of .243
and a MV of 3200 fps
and HOB of 2.5"

Go to here www.handloads.com/calc/ and run some number for yourself.



Where'd you get the MV of 3200fps for a16in barrel? just wondering.
Link Posted: 8/29/2004 10:45:05 AM EST
[Last Edit: 8/29/2004 10:50:04 AM EST by inkaybee]

Originally Posted By photoman:

Originally Posted By inkaybee:
About +1.5"@100m
- .5"@200m
- 10"@300m
-30.5"@400m
-66" @500m

Based on a BC of .243
and a MV of 3200 fps
and HOB of 2.5"

Go to here www.handloads.com/calc/ and run some number for yourself.



Where'd you get the MV of 3200fps for a16in barrel? just wondering.

Just an off the top of my head guess. www.ar15.com/forums/topic.html?b=3&f=16&t=189353 has it listed at 3123 for m193.


So maybe more like this:
+1.25@100m
-1@200m
-11@300m
-33@400m
-71@500m
Link Posted: 8/29/2004 10:50:40 AM EST

Originally Posted By inkaybee:

Originally Posted By photoman:

Originally Posted By inkaybee:
About +1.5"@100m
- .5"@200m
- 10"@300m
-30.5"@400m
-66" @500m

Based on a BC of .243
and a MV of 3200 fps
and HOB of 2.5"

Go to here www.handloads.com/calc/ and run some number for yourself.




Where'd you get the MV of 3200fps for a16in barrel? just wondering.

Just an off the top of my head guess. www.ar15.com/forums/topic.html?b=3&f=16&t=189353 has it listed at 3123 for m193.



IIRC thats from a 20in barrel at 16ft form the muzzle.
Somone had all that stuff listed over in the ammo forum(bullet drops and such) i thought.
Link Posted: 8/29/2004 10:58:24 AM EST

Originally Posted By photoman:

Originally Posted By inkaybee:

Originally Posted By photoman:

Originally Posted By inkaybee:
About +1.5"@100m
- .5"@200m
- 10"@300m
-30.5"@400m
-66" @500m

Based on a BC of .243
and a MV of 3200 fps
and HOB of 2.5"

Go to here www.handloads.com/calc/ and run some number for yourself.




Where'd you get the MV of 3200fps for a16in barrel? just wondering.

Just an off the top of my head guess. www.ar15.com/forums/topic.html?b=3&f=16&t=189353 has it listed at 3123 for m193.



IIRC thats from a 20in barrel at 16ft form the muzzle.
Somone had all that stuff listed over in the ammo forum(bullet drops and such) i thought.



I am not saying the chart I linked to is the be all end all of Muzzel velocities. But if you look close it says 3259 for a 20"
3132 for a 16"
3064 for a 14.5"

YMMV
Link Posted: 8/29/2004 11:20:37 AM EST
like to check this when I zero this week
Link Posted: 8/29/2004 12:15:51 PM EST
[Last Edit: 8/29/2004 12:16:21 PM EST by RyJones]
check out Modern Ballistics.
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