I must resist.......maybe.

[HoustonR6ryda]

I'm in the middle of my build and then they do this http://palmettostatearmory.com/index...m-carbine.html

[Boomerang]

Buy it, then claim you have $1400 in it and post it for $900. LOL ARs are cheap...

[HoustonR6ryda]

yep

Buy it, then claim you have $1400 in it and post it for $900. LOL ARs are cheap...

guy behind me at here at work said the same thing

[txsteele]

That's nice. PSA rarely has 1:9 for sale......95% of the time they are 1:7

[Mike D]

I can't see any reason to choose a 1:9 twist over a 1:7.

[jnors06]

I saw this one and almost ordered it yesterday but I went with a diff upper instead.

[HoustonR6ryda]

Thanks

I can't see any reason to choose a 1:9 twist over a 1:7.

at how many yards would you lose accuracy with 55-62 grains?

[Free2Hunt]

Sweet, thanks for posting. I've been looking for a good excuse to get my first AR. Just did.

[hellbndr23]

I can't see any reason to choose a 1:9 twist over a 1:7.

If you want to shoot really lite varmit rounds, like 40 grains, you want the 1:9.

[Mike D]

If you want to shoot really lite varmit rounds, like 40 grains, you want the 1:9.

Why?

[Mike D]

at how many yards would you lose accuracy with 55-62 grains?

Probably none. It will show up above 65-70 grains typically.

[JSF]

In

[hellbndr23]

Why?

You can "overspin" a light thin jacket bullet and it will come apart in flight, so I read. I have no personal experience shooting all these grains or twist rate. I have read a ton of material on the subject though.

The military has changed their twist rates as their ammo has gotten heavier and longer, tracers being the hardest ones to stabilize now. This is also where the myth that M16s were so deadly because they designed the bullets to tumble. Not so. The M16 was a 1:12 twist. They switched to heavier rounds and they would not stabilize, causing tumbling. They now run 1:7.

Here are a couple quick search results that give the gist.

http://www.thehighroad.org/archive/index.php/t-403663.html

http://www.thetruthaboutguns.com/2012/08/foghorn/ask-foghorn-barrel-twist-and-which-is-right-for-your-ar-15/

From the second link

40gr likes 1:12
55gr likes 1:9
77gr likes 1:7

[Mike D]

You can "overspin" a light thin jacket bullet and it will come apart in flight, so I read. I have no personal experience shooting all these grains or twist rate. I have read a ton of material on the subject though.

The military has changed their twist rates as their ammo has gotten heavier and longer, tracers being the hardest ones to stabilize now. This is also where the myth that M16s were so deadly because they designed the bullets to tumble. Not so. The M16 was a 1:12 twist. They switched to heavier rounds and they would not stabilize, causing tumbling. They now run 1:7.

Here are a couple quick search results that give the gist.

http://www.thehighroad.org/archive/index.php/t-403663.html

http://www.thetruthaboutguns.com/2012/08/foghorn/ask-foghorn-barrel-twist-and-which-is-right-for-your-ar-15/

From the second link

40gr likes 1:12
55gr likes 1:9
77gr likes 1:7

That was a loaded question.

I understand twist rate and the effects it has.

However I don't believe .233 has enough velocity to cause that to happen especially from a 16" barrel.

IMO 1:8 or 1:7 is the better choice.

[HoustonR6ryda]

thanks Mike D