Warning

 

Close

Confirm Action

Are you sure you wish to do this?

Confirm Cancel
Member Login
Posted: 2/16/2006 5:40:11 AM EDT
How does it fly?

Or is that too much? - what is the max weight that you are able to shoot w/ a 1 in 9 barrel?

Thanks,

Badredfish
Link Posted: 2/16/2006 5:42:52 AM EDT
try it. this is the only way to know IMHO


Link Posted: 2/16/2006 6:21:14 AM EDT
Link Posted: 2/16/2006 6:35:38 AM EDT
Link Posted: 2/16/2006 6:53:32 AM EDT
Thank you Bigbore (you and your company are a + for this site).

Thank you GPLG - for your link - I will have to digest that tonight.

Later,

Badredfish
Link Posted: 2/16/2006 6:57:54 AM EDT
The 75gr bullets appears to be in the grey area. If you read the Ammo-Oracle you will conclude that 75 won't work but many people have no problems with them in 1-9 barrels. Bushmaster's website states the a 1-9 will stabilize a 75gr bullet. The only way to know is to try it in your rifle and see.

I personally feel that barrel length has something to do with it also, because as the velocity goes up so does the spin from a given twist rate. I would bet that more short 11.5" 1-9 barrels don't like 75's and most 20" 1-9's do fine.
Link Posted: 2/16/2006 7:04:08 AM EDT

Originally Posted By StewartTR:
The 75gr bullets appears to be in the grey area. If you read the Ammo-Oracle you will conclude that 75 won't work but many people have no problems with them in 1-9 barrels. Bushmaster's website states the a 1-9 will stabilize a 75gr bullet. The only way to know is to try it in your rifle and see.

I personally feel that barrel length has something to do with it also, because as the velocity goes up so does the spin from a given twist rate. I would bet that more short 11.5" 1-9 barrels don't like 75's and most 20" 1-9's do fine.

The Ammo Oracle is wrong if it states that 75 grain bullets will not work at all in 1/9 barrels.

I know for a fact that the Hornady 75 AMAX, a bullet significantly longer than the Hornady 75 HPBT, is perfectly stabilized in a Winchester Model 70 with a 26" 1/9 barrel.

So 75 grain bullets definitely stabilize in barrels longer than 20" (I know because I know people who started in HP with a 20" 1/9 AR and 75 gr Hornadys). But might not stabilize in shorter 1/9 barrels due to the shorter time the bullet spends rotating in the rifling (lower rotational acceleration = lower rotational velocity).
Link Posted: 2/16/2006 7:17:09 AM EDT
20" rifle w/ 1/9 sure, 14.5-16" carbine w/ 1/9 not so good. The longer barrel is going to help, but 1/7 twist is much better.
Link Posted: 2/16/2006 7:35:09 AM EDT


I personally feel that barrel length has something to do with it also, because as the velocity goes up so does the spin from a given twist rate. I would bet that more short 11.5" 1-9 barrels don't like 75's and most 20" 1-9's do fine.


It's science, really.
Link Posted: 2/16/2006 7:46:26 AM EDT

Originally Posted By El_Blasto:
14.5-16" carbine w/ 1/9 not so good.



Of got 2 of each that say otherwise....
Link Posted: 2/16/2006 8:27:34 AM EDT
[Last Edit: 2/16/2006 8:28:23 AM EDT by El_Blasto]
1/7 is still better for heavier bullets, but I am glad to hear that you have 2 of each that are great shooters.
Top Top