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#6820051 - 07/11/17 08:57 PM Bushmaster ar 15 accuracy
b weezy Offline
Woodsman

Registered: 01/07/13
Posts: 139
I have one of these and I can't get a good group... I'll get it dead on at 25 yards then when I go out to a 100 it will be 6-8" high and left... Am I doing something wrong or is this what I should expect from this gun? Thanks for any advice or input

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#6820063 - 07/11/17 09:05 PM Re: Bushmaster ar 15 accuracy [Re: b weezy]
Tff caribou Offline
Veteran Tracker

Registered: 08/27/12
Posts: 3200
Loc: Watauga, TX
You can't expect a 25 yard zero to be a 100 yard zero. What optic are you running, and even though in the middle of the bullseye, how tight is the group itself?
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#6820081 - 07/11/17 09:24 PM Re: Bushmaster ar 15 accuracy [Re: b weezy]
b weezy Offline
Woodsman

Registered: 01/07/13
Posts: 139
Leupold vx-ll... At 25 maybe half inch groups

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#6820086 - 07/11/17 09:30 PM Re: Bushmaster ar 15 accuracy [Re: b weezy]
Brother in-law Online   content
THF Celebrity

Registered: 07/08/07
Posts: 25818
You should be 1 hole at 25

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#6820106 - 07/11/17 09:46 PM Re: Bushmaster ar 15 accuracy [Re: b weezy]
DStroud Offline
Pro Tracker

Registered: 11/02/11
Posts: 1426
Loc: Waco
An AR with scope puts the scope between 2-3 inches above your barrel so to be on at 100 you would need to be about 2 inches low at 25 yards so that's one thing.
I never bother sighting in close I just use a 3ft square target at 100 and 9 times out of 10 you will hit paper and then fine tune from there.

Now to group size what type ammo? There are several variables but if you are shooting Match grade ammo it should shoot maybe 1 to 1.5 inch groups at 100 with decent optics and a decent shooter.


Edited by DStroud (07/11/17 09:47 PM)

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#6820222 - 07/12/17 05:43 AM Re: Bushmaster ar 15 accuracy [Re: b weezy]
RiverRider Online   content
THF Trophy Hunter

Registered: 11/11/07
Posts: 6907
Loc: Wise Co.
I once had a BM that had an improperly machined upper reveiver, so the barrel was crookedly mounted. POI was screwed up at different ranges. BM fixed it.
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Originally Posted By: Cleric
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#6820237 - 07/12/17 06:08 AM Re: Bushmaster ar 15 accuracy [Re: b weezy]
FiremanJG Online   content
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Registered: 12/16/08
Posts: 20448
Loc: Wolfe City, TX
What DStroud said.
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#6820279 - 07/12/17 06:54 AM Re: Bushmaster ar 15 accuracy [Re: b weezy]
Vern1 Online   content
Pro Tracker

Registered: 09/13/11
Posts: 1961
Loc: Pettytown, TX, US of A
Is it a Carbon 15?
I had one of those and it was so flexible we called it the pool noodle.
Shot pie plate sized groups at 100 yards.

If it's not a Carbon 15, what size were your groups at 100 yards?

With ARs, I usually start at 50 to get close, then move to 100 for fine tune.
Most of my stands are exactly 100 yards from front of stand to center of feeder so that works for me.
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#6820281 - 07/12/17 06:58 AM Re: Bushmaster ar 15 accuracy [Re: b weezy]
Dalroo Offline
Bird Dog

Registered: 08/03/16
Posts: 397
Loc: The Heart of Texas
I have one and pretty accurate for 5 shots, then barrel heats up and shots go awry. May be the problem here.
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#6820322 - 07/12/17 08:07 AM Re: Bushmaster ar 15 accuracy [Re: b weezy]
fouzman Offline
Pro Tracker

Registered: 08/09/10
Posts: 1189
Loc: Houston, TX
I have a Bushmaster 450 "hunting rifle" with a 20" barrel that is a tack driver.

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#6820334 - 07/12/17 08:19 AM Re: Bushmaster ar 15 accuracy [Re: b weezy]
Buzzsaw Offline
THF Trophy Hunter

Registered: 06/29/11
Posts: 8113
Loc: Frisco, Texas
Just another case of "you get what you pay for" there is a reason these cheap AR's are $400 and wont group. They are for people who just want an "AR" and make allot of noise.

But if this is all you got and what you like to do... this is the type performance to expect.

Now you can spend another $400 making it worth having, quit buying Tula and boxes of cheap bulk ammo and boom, there ya go.
2cents
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#6820379 - 07/12/17 09:04 AM Re: Bushmaster ar 15 accuracy [Re: b weezy]
QuitShootinYoungBucks Offline
THF Trophy Hunter

Registered: 11/01/12
Posts: 7487
Loc: Lubbock, TX
As posted, POI should be fairly different between 25 and 100. How was the group itself at 100?

Assuming the group itself is not good:

1. Double-check all mounting hardware.
2. Double-check the weapon itself.
3. Do you know for sure the scope is ok?
4. If all of the above checks out, get some GOOD ammo in various weights/brands and do some work at the range.

The only thing I think you could easily change after that would be the trigger.
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#6820552 - 07/12/17 11:27 AM Re: Bushmaster ar 15 accuracy [Re: RiverRider]
RiverRider Online   content
THF Trophy Hunter

Registered: 11/11/07
Posts: 6907
Loc: Wise Co.
Originally Posted By: RiverRider
I once had a BM that had an improperly machined upper reveiver, so the barrel was crookedly mounted. POI was screwed up at different ranges. BM fixed it.


I probably should have been more clear. I had a lateral POI issue with the rifle...not vertical.
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Originally Posted By: Cleric
God I am hating caliber threads more and more

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#6820670 - 07/12/17 01:05 PM Re: Bushmaster ar 15 accuracy [Re: fouzman]
Vern1 Online   content
Pro Tracker

Registered: 09/13/11
Posts: 1961
Loc: Pettytown, TX, US of A
Originally Posted By: fouzman
I have a Bushmaster 450 "hunting rifle" with a 20" barrel that is a tack driver.


Most of the Bushies are good accurate guns.
Some, like the Carbon 15 are not.
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Vern1
Texans since 1824
NRA Lifetime Member

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#6820853 - 07/12/17 04:44 PM Re: Bushmaster ar 15 accuracy [Re: Buzzsaw]
Roll-Tide Online   content
Veteran Tracker

Registered: 06/11/15
Posts: 3087
Originally Posted By: Buzzsaw
Just another case of "you get what you pay for" there is a reason these cheap AR's are $400 and wont group. They are for people who just want an "AR" and make allot of noise.

But if this is all you got and what you like to do... this is the type performance to expect.

Now you can spend another $400 making it worth having, quit buying Tula and boxes of cheap bulk ammo and boom, there ya go.
2cents


I dont think a bushmter is a 400 dollar AR. I am no rifle expert, but my PSA 6.8 shoots as good as my Modern Outfitters.

Now i dp hunt with the PSA because i am less concerned with dinging it or getting it wet.

I zero at 50 yards, which puts my about an inch high at 100 and even at 150, using Hornady 120 sst.

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