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#7215855 - 12/22/12 10:50 AM bullet weight for 1 in 8
outlawlineman Offline
Member

Registered: 02/10/08
Posts: 240
Loc: Central Kali
My AR has a 1 in 8 twist and was hoping to get a few ideas what bullet weight I should try first. (factory ammo for now)
Thanks
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CI16728
#7215874 - 12/22/12 10:57 AM Re: bullet weight for 1 in 8 [Re: outlawlineman]
TWR Offline
Campfire Tracker

Registered: 11/21/06
Posts: 5450
I've shot 45's to 77's in mine.

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#7215999 - 12/22/12 11:40 AM Re: bullet weight for 1 in 8 [Re: TWR]
bea175 Offline
Campfire Oracle

Registered: 02/15/02
Posts: 25474
Loc: Kpt.,TN , Montgomery, Co, VA
I would start with the 60 gr Vmax
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#7216030 - 12/22/12 11:49 AM Re: bullet weight for 1 in 8 [Re: outlawlineman]
Take_a_knee Offline
Campfire 'Bwana

Registered: 09/10/09
Posts: 12970
My 1 in 8 Montana AR barrel shoots five shots of Rem 50gr factory hollowpoint or Federal 77gr HP's into an inch, all day long. One in 8 is THE twist for an AR, IMO.

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#7216090 - 12/22/12 12:10 PM Re: bullet weight for 1 in 8 [Re: Take_a_knee]
cra1948 Offline
Campfire Guide

Registered: 11/20/06
Posts: 3436
Loc: South shore Lake Ontario
Originally Posted By: Take_a_knee
My 1 in 8 Montana AR barrel shoots five shots of Rem 50gr factory hollowpoint or Federal 77gr HP's into an inch, all day long. One in 8 is THE twist for an AR, IMO.


I've tried those Rem factory 50 hp's in my AR's and found the bullets pushing back into the cases...maybe not a good round for an AR.
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#7216151 - 12/22/12 12:47 PM Re: bullet weight for 1 in 8 [Re: cra1948]
Take_a_knee Offline
Campfire 'Bwana

Registered: 09/10/09
Posts: 12970
Originally Posted By: cra1948
Originally Posted By: Take_a_knee
My 1 in 8 Montana AR barrel shoots five shots of Rem 50gr factory hollowpoint or Federal 77gr HP's into an inch, all day long. One in 8 is THE twist for an AR, IMO.


I've tried those Rem factory 50 hp's in my AR's and found the bullets pushing back into the cases...maybe not a good round for an AR.


Thanks for the heads up. I cycle a few of 'em several times and see what happens.

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#7216162 - 12/22/12 12:54 PM Re: bullet weight for 1 in 8 [Re: outlawlineman]
PaleRider Offline
Campfire Regular

Registered: 02/04/06
Posts: 835
Originally Posted By: outlawlineman
My AR has a 1 in 8 twist and was hoping to get a few ideas what bullet weight I should try first. (factory ammo for now)
Thanks


outlawlineman,
Th beauty of a 1-8" twist is that it will shoot most any weight bullet pretty well (with the exception of some very heavy long range target bullets).
I'm assuming you are talking about a 5.56/223 Rem. gun.
I've had 1-8" barrels that would shoot 40gr varmit bullets into sub .5 MOA groups, and still shoot 69gr into little bitty groups as well.
Each barrel will have it's personal preferences on type and weight of bullets - you will just need to try a few different ones to see what your gun likes.
Bullet length has more to do with it than weight, depending more on the length of the bullets bearing surface that is in contact with the rifling/grooves.
What a bullet is made/constructed of will change the length.
As an example a solid copper constructed bullet like a Barnes will be longer than a bullet with a lead core of the same weight.
It can't get any bigger around because of the barrel diameter, so has to be longer to get to the same weight as the heavier lead material.
I'd just get some different weight bullets that you think are closest to being the proper type for your intended application and do some shooting.
Your gun will tell you what it likes for best accuracy.
I'm sure some others will jump in with advice, but it would help if they knew what you want to use your gun for (varmint shooting, target shooting, etc.).
Good luck,
Ted smile

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#7216218 - 12/22/12 01:20 PM Re: bullet weight for 1 in 8 [Re: PaleRider]
outlawlineman Offline
Member

Registered: 02/10/08
Posts: 240
Loc: Central Kali
Thanks for the replies! I'm not new to shooting/hunting just new to the AR platform. Just looking for a starting place. Wasn't sure if the 1 in 8 was to fast for like a 45 gr cup and core. You guys have been very helpful... Thanks again
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#7223087 - 12/24/12 11:45 AM Re: bullet weight for 1 in 8 [Re: outlawlineman]
husqvarna Offline
Campfire Ranger

Registered: 09/20/06
Posts: 1593
Loc: Texas Panhandle
My Tikka T3 with 8" twist does OK with 50's and 55's but really shoots with bullets 60 grs. and over, Sierra 65 SPBT's are its favorite.

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#7223806 - 12/24/12 03:26 PM Re: bullet weight for 1 in 8 [Re: husqvarna]
firstcoueswas80 Offline
Campfire Outfitter

Registered: 03/06/06
Posts: 7611
Loc: Arizona
My 1-8" has shot everything from 40's to 68's very well.

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