Warning

 

Close

Confirm Action

Are you sure you wish to do this?

Confirm Cancel
Member Login

Site Notices
Posted: 2/24/2007 6:26:49 PM EST
I Zeroed mine at 50yds and It shoot's about an inch or so high at 100 Is that about right? I havent had to rezero In a couple of year's till I ran out of the ammo I sighted it in with. Now I cant find the paperwork that came with it so I wasnt sure at what distance to sight it in. Thank's
Link Posted: 2/24/2007 7:15:52 PM EST
[Last Edit: 2/24/2007 7:17:07 PM EST by Molon]
Depending on ammunition, sight mount and barrel length you should be about 1.5" high at 100 yards with a 50 yard zero. The trajectory in red below shows a 50 yards zero (which is an excellent zero to use for the AR-15 platform.)





Link Posted: 2/24/2007 7:27:38 PM EST
The rifle is a Bushy A3 16" barrel with an arm's throw lever mount with a cantalever spacer under the ML2, The ammo is 62gr. Radway green.

Thank's
Link Posted: 2/24/2007 7:39:07 PM EST
[Last Edit: 2/24/2007 7:41:39 PM EST by Molon]

Originally Posted By WldWldWest:
The rifle is a Bushy A3 16" barrel with an arm's throw lever mount with a cantalever spacer under the ML2, The ammo is 62gr. Radway green.

Thank's


The ML2 in the ARMS mount puts the center line of the sight about 2.8" above the center line of the bore. I haven't chronographed any Radway green, but I've heard that it runs a little slower than typical M855. From a 16" barrel you might be getting a muzzle velocity of 2950 fps. Under these conditions a 50 yard zero will probably put you closer to 1.5" to 1.7" high at 100 yards.
Link Posted: 2/24/2007 7:50:32 PM EST
With the 4moa dot It's really tough to get that precise with it! For me anyway. At 50 I can shoot 1 ragged hole with it but at a hundred It open's up a bit. I dont really care for the radway, It shoot's okay but It's very dirty...About the worst I've seen! after I rezeroed I was hitting a 6inch by 6inch 260 yd. gong about every shot (Off the bag's of course!) I guess I'll leave it where it is.
Link Posted: 2/25/2007 4:25:42 AM EST

Originally Posted By Molon:
Depending on ammunition, sight mount and barrel length you should be about 1.5" high at 100 yards with a 50 yard zero. The trajectory in red below shows a 50 yards zero (which is an excellent zero to use for the AR-15 platform.)


www.box.net/public/static/6uu64s5tbe.jpg




What is the difference between the green line and the red one? Where did you get this diagram from, I will want to read more about it.
Link Posted: 2/25/2007 4:44:50 AM EST

Originally Posted By bear3351:
What is the difference between the green line and the red one?

Green is the trajectory with a 25 yard zero and red is the trajectory for a 50 yard zero.
Link Posted: 2/25/2007 7:21:38 AM EST

Originally Posted By Hoplophile:

Originally Posted By bear3351:
What is the difference between the green line and the red one?

Green is the trajectory with a 25 yard zero and red is the trajectory for a 50 yard zero.


Hoplophile is absolutely correct. The graph is simply a print-out from Oehler's Ballistic Explorer program. I believe when I originally put that comparison together, I was attempting to show how ridiculous a 25 yard zero is compared to a 50 yard zero.
Top Top