1x7 twist rate - Page 2
Firearm & Gun Forum - FireArmsTalk.com > Long Guns > Auto & Semi-Auto Discussion > AR-15 Discussion > 1x7 twist rate

Reply
 
LinkBack Thread Tools Display Modes
Old 08-30-2013, 08:36 PM   #11
Feedback Score: 0 reviews
 
Join Date: Feb 2011
Location: Pasco Cty.FL
Posts: 6,577
Liked 2493 Times on 1422 Posts
Likes Given: 1943

Default

I like the match barrel, because I primarily shoot at the range.

Seems as though the 55grain FMJs, that are so popular

everywhere now,are a little squirrelly coming out of the

longer 1/7 HBAR.

Maybe the 55s won't be too bad through the shorter barrel.

__________________
therewolf is offline  
 
Reply With Quote
Old 08-30-2013, 08:41 PM   #12
FTF_SUPPORTER.png
Feedback Score: 0 reviews
 
Jagermeister's Avatar
 
Join Date: Feb 2013
Location: Germany
Posts: 6,815
Liked 3861 Times on 2305 Posts
Likes Given: 3233

Default

I have a 1/7 on my Hera Arms. It is a match rifle, but I also hunt with it. I have shot 55 and 62 grain through it with extreme accuracy. I have shot about 700 rounds with no problems. I am quite sure you should not to go under 55 grains. At least fellow competitors tell me this. I have my best results with the 62 grain. Is it ideal? Well try 55 , 62 and 70s range yourself to find out. Your 1/7 twist barrel will have no problem handling the cartridges. Oh, barrel quality/material and uniqueness of each barrel should be taken into consideration. What is ideal for my 15th dynamic rifle may not be ideal for your stick.

__________________
Jagermeister is offline  
 
Reply With Quote
Old 08-30-2013, 10:01 PM   #13
Feedback Score: 0 reviews
 
Rick1967's Avatar
 
Join Date: Feb 2010
Location: Clifton,Colorado
Posts: 4,158
Liked 1837 Times on 1024 Posts
Likes Given: 1212

Default

I have a 1/7 twist on my carbine. I have a mid length gas system...in case you care. I shoot 55 grain bullets all the time. They run great. No problem with spinning to fast. However when I run a 77 grain bullet through that gun I can shoot a three shot group at 100 yards with all the holes touching each other. That is less than 1/2 MOA. If you want to shoot heavy bullets for accuracy...you have the right barrel.

Some people even load heavier bullets than that. They load them so long that they must be fed one at a time because they wont fit in the mag. I haven't taken it to that extreme...yet.

__________________

Romans 1:16 I am not ashamed of the gospel, because it is the power of God for the salvation of everyone who believes: first for the Jew, then for the Gentile.

Rick1967 is offline  
 
Reply With Quote
Old 08-30-2013, 10:50 PM   #14
FTF_SUPPORTER.png
Feedback Score: 0 reviews
 
DeltaF's Avatar
 
Join Date: Aug 2013
Location: Deep South USA
Posts: 2,949
Liked 2200 Times on 1218 Posts
Likes Given: 280

Default

Quote:
Originally Posted by SSGSF
The military shoots more of the M855. Which is the length of a 90gr bullet . Then they do Tracers.
That's why they went the 1/7 twist.
The history of the round and reason for different military barrel twists is listed in great, painstaking detail at the websites I referenced in my post. The 856 is longer and heavier than the 855 and can only be used in a 1 in 8 or faster twist barrel. 855 can be used in a 1 in 10 or faster twist barrel.
__________________
Quote:
Nobody on this thread licked anybody's bodypart.

Nobody said anything.....about Glocks until you posted about your bacon dog who needs dentures.

What did somebody forget to engage their safety and shoot the dogs front teeth out? Or are we blaming that on the Glock shooters?

"Gaston, the Doggy dentist's best friend."
DeltaF is offline  
 
Reply With Quote
Old 08-30-2013, 11:47 PM   #15
Supporting Member
FTF_SUPPORTER.png
Feedback Score: 0 reviews
 
SSGSF's Avatar
 
Join Date: Nov 2011
Location: The best place in the world,TEXAS by God
Posts: 1,104
Liked 512 Times on 314 Posts

Default

Quote:
Originally Posted by DeltaF

The history of the round and reason for different military barrel twists is listed in great, painstaking detail at the websites I referenced in my post. The 856 is longer and heavier than the 855 and can only be used in a 1 in 8 or faster twist barrel. 855 can be used in a 1 in 10 or faster twist barrel.
How many times have you shot tracers when you go to the range to zero your weapon.
__________________

"Don't call me Sir, I work for a living"

"I'm an A**hole"

SSGSF is offline  
 
Reply With Quote
Old 08-30-2013, 11:53 PM   #16
Feedback Score: 0 reviews
 
purehavoc's Avatar
 
Join Date: Oct 2011
Location: Not where I wanna be
Posts: 4,748
Liked 1130 Times on 735 Posts
Likes Given: 2020

Default

My personal favorite twist in .223 would be the the 1:8 but there are only a few companies out there that do the 1:8 .
Saying that all but my bolt guns are 1:7

__________________
Criminals Prefer Unarmerd Victims....


And Dictators Prefer Unarmed Citizens
purehavoc is offline  
 
Reply With Quote
Old 08-31-2013, 12:16 AM   #17
FTF_SUPPORTER.png
Feedback Score: 0 reviews
 
DeltaF's Avatar
 
Join Date: Aug 2013
Location: Deep South USA
Posts: 2,949
Liked 2200 Times on 1218 Posts
Likes Given: 280

Default

Quote:
Originally Posted by SSGSF

How many times have you shot tracers when you go to the range to zero your weapon.
Actually when we shoot our M4s we play around with tracers a lot in the evening just for fun. If we're shooting m194 tracers we're typically zeroed for m193. The one time we tried m856 tracers we zeroed for m855. The M855 was about 3 MOA at just outside of 100 yards and we were shooting with it all day with no problems. Then evening came and we started with the M856s. They were all over the place. We were literally watching them curve away from the targets at the last second. The following M855s would then be dead on with no problems. We wondered why M855 shot fine but M856 was horrible. The answer was found later. M855 is fine for 1 in 10 and faster. M856 needs 1 in 8 or faster. All our barrels were 1 in 9 twist barrels. I already cited good sources on this earlier.
__________________
Quote:
Nobody on this thread licked anybody's bodypart.

Nobody said anything.....about Glocks until you posted about your bacon dog who needs dentures.

What did somebody forget to engage their safety and shoot the dogs front teeth out? Or are we blaming that on the Glock shooters?

"Gaston, the Doggy dentist's best friend."

Last edited by DeltaF; 08-31-2013 at 01:00 AM.
DeltaF is offline  
 
Reply With Quote
Old 08-31-2013, 12:53 AM   #18
Feedback Score: 0 reviews
 
Join Date: Jan 2013
Posts: 481
Liked 99 Times on 65 Posts

Default

Thanks guys for the help. Guess I'm not going to buy that 1000 rounds of 52 grain bullets. Will continue looking for the 62 grains that I know the gun likes. You guys gave me some good information. I appreciate it.

__________________
Crazycastor is offline  
DeltaF Likes This 
Reply With Quote
Old 08-31-2013, 12:54 AM   #19
FTF_SUPPORTER.png
Feedback Score: 0 reviews
 
ZeusEcho's Avatar
 
Join Date: Feb 2009
Posts: 579
Liked 50 Times on 46 Posts
Likes Given: 108

Default

Quote:
Originally Posted by Rick1967 View Post
I have a 1/7 twist on my carbine. I have a mid length gas system...in case you care. I shoot 55 grain bullets all the time. They run great. No problem with spinning to fast. However when I run a 77 grain bullet through that gun I can shoot a three shot group at 100 yards with all the holes touching each other. That is less than 1/2 MOA. If you want to shoot heavy bullets for accuracy...you have the right barrel.
.
What kind of barrel and glass?
__________________

ΜΟΛΩΝ ΛΑΒΕ
ZeusEcho is offline  
 
Reply With Quote
Old 08-31-2013, 12:58 AM   #20
Supporting Member
FTF_SUPPORTER.png
Feedback Score: 0 reviews
 
SSGSF's Avatar
 
Join Date: Nov 2011
Location: The best place in the world,TEXAS by God
Posts: 1,104
Liked 512 Times on 314 Posts

Default

Quote:
Originally Posted by DeltaF

Actually when we shoot our M4s we play around with tracers a lot in the evening just for fun. If we're shooting m194 tracers we're typically zeroed for m193. The one time we tried m856 tracers we zeroed for m855. The M855 was about 3 MOA at just outside of 100 yards and we were shooting with it all day with no problems. Then evening came and we started with the M856s. They were all over the place. We were literally watching them curve away from the targets at the last second. The following M855s would then be dead on with no problems. We wondered why M855 shot fine but M856 was horrible. The answer was found later. M855 is fine for 1 in 10 and faster. M856 needs 1 in 8 or faster. All our barrels were 1 in 9 twist barrels. I already cited good sources on this earlier.
Ok it looks like you have had more training then me.
__________________

"Don't call me Sir, I work for a living"

"I'm an A**hole"

SSGSF is offline  
 
Reply With Quote
Reply

Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Firearms Forum Replies Last Post
Barrel twist rate question stelliott80 AR-15 Discussion 4 02-04-2011 08:22 AM
Which is Faster Twist Rate WhipLash General Rifle Discussion 9 11-28-2010 10:10 PM
Quick explanation about twist rate please? paul AR-15 Discussion 7 11-27-2010 06:09 AM
How important is the rate of twist? BigSe63xy AR-15 Discussion 8 08-05-2010 12:01 AM
.243 rate of twist 1 in 10 wallly The Club House 5 04-11-2008 01:04 PM