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firedogross
I wouldn't fight you for practice
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Posted: 5/29/2009 4:42:38 AM EST
I just put a 3x9 bushnell scope on my Bushmaster M4, do I still zero at 50 yards like iron sights?
My MOA is about the size of a fighter pilot's ego.

I woke up this morning and had myself a beer, the future's uncertian and the end is always near.
Eric802
It's not the years, it's the miles...
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Posted: 5/29/2009 4:45:43 AM EST
Depends on the height above bore of the scope. If the centerline of the scope is at the same height as your irons, then it should be the same. Given that there are varying mounts that can change how high the scope sits, I'd recommend zeroing it at 50 and then checking it at 200, if possible, and seeing where you're at. If nothing else, zeroing at 50 will get you in the ballpark.
"You underestimate my ability to handle the Cock." - BUCC_Guy
FMJ
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Posted: 5/29/2009 5:12:23 AM EST
[Last Edit: 5/29/2009 5:14:31 AM EST by FMJ]
Depends

but I do like Chucks 50y zero for my SHTF M4`s


I ran a Bushnel 3.5-10x on my Bushmaster A1 20 inch hbar
Sold the Rifle but kept the scope


TMA
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Posted: 5/29/2009 6:57:30 AM EST
Depends on what you intend to do with your rifle?

Since you mounted a 3x9 scope on your rifle, I assume you do not intend to use it for CQB (or self defense around the home). If you intend to shoot coyotes or prairie dogs, you might be better off with a 40 yard (200 yard) zero (as opposed to the 50 yard (100 yard) zero normally suggested for self defense). If all you intend to do is punch paper, why not zero it for the range you normally shoot paper at?

As (or if) your intended uses change you can always change the zero.
firedogross
I wouldn't fight you for practice
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Posted: 5/29/2009 9:06:48 AM EST
Originally Posted By TMA:
Depends on what you intend to do with your rifle?

Since you mounted a 3x9 scope on your rifle, I assume you do not intend to use it for CQB (or self defense around the home). If you intend to shoot coyotes or prairie dogs, you might be better off with a 40 yard (200 yard) zero (as opposed to the 50 yard (100 yard) zero normally suggested for self defense). If all you intend to do is punch paper, why not zero it for the range you normally shoot paper at?

As (or if) your intended uses change you can always change the zero.


Paper (maybe cats at the slaughter house, shhh)...but id like to get a range where i can easily adjust POI for 50,75,10,150,200 meters
My MOA is about the size of a fighter pilot's ego.

I woke up this morning and had myself a beer, the future's uncertian and the end is always near.
jerz_subbie
It's nice to live in a free state!
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Posted: 5/29/2009 9:41:28 AM EST
Originally Posted By firedogross:

Paper (maybe cats at the slaughter house, shhh)...but id like to get a range where i can easily adjust POI for 50,75,10,150,200 meters


This is why I like BDC reticles. One trip to the range and you can figure out your different POI's real quick.

I had a Burris FF II 3-9x on my RRA entry tac and zeroed it at 50yds, knew I'd be a couple inches high at 100, 2nd mark was 200yds, between 2nd and 3rd mark was 300yds. I was ablke to shoot out to 300yds like this quite well, esp considering it's a service grade carbine!
"A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed."
unpleasant
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Posted: 5/29/2009 9:52:48 AM EST
On my 3x9.. I zero @ 50

10yds is about 2ish" low
25yds will impact 2" low
50yds is zero
100yds will impact 2" high
200yds will impact about a .5"high to zero.
"If you've got them by the balls their hearts and minds will follow."