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2/16/2010 1:52:42 AM EDT
Overall is the 1/8 twist more of an "all around" twist rate than the 1/7. It will be used for common commercial loads and m193 on occasion. Thanks in advance.

Javo
2/16/2010 4:04:16 AM EDT
[#1]
It sure seems so to me.



But... If you think about it logically, I don't think it really matters for shooting commercial M193.  It seems everything I have shot M193 out of it seems to group around 2.5 inches at 100.  
2/16/2010 10:16:50 PM EDT
[#2]
Well m193 will be fired I should say, more often, than other loads but the 1/8 will be my first "recce" build and wanted to know if the convenience of having a 1/8 really warrants the price spike. I know 1/7 will stabilize the heavier bullets more effectively but i might also shoot lighter loads. The hive's opinion?

Thanks
2/16/2010 10:20:53 PM EDT
[#3]
I believe the 1:8 twist is typically used on higher grade barrels.  This would most likely be the price hike, not the actual twist rate difference.

From what I've read, 1:8 seems to stabilize anything you can load into an AR mag just as well as the 1:7.  Also from what I've read you won't hurt anything running M193 through a 1:7.  I'd say pick the quality of barrel you want (1:8 stainless match vs chrome lined rack grade 1:7) based on your shooting needs and go from there.
2/16/2010 10:28:16 PM EDT
[#4]
That seems like rock solid logic. As a matter of fact the barrel is a stainless barrel (SS410) offered by BCM listed here and the other 1/8 they sell is the BFH flavor here. No standard barrel steel on 1/8. Now im dead on getting a middy, i just dont want to miss out on any other advantage a 1/8 might offer other that higher end steel.

Thanks
2/17/2010 7:25:04 PM EDT
[#5]
Quoted:

From what I've read, 1:8 seems to stabilize anything you can load into an AR mag just as well as the 1:7.  Also from what I've read you won't hurt anything running M193 through a 1:7.  I'd say pick the quality of barrel you want (1:8 stainless match vs chrome lined rack grade 1:7) based on your shooting needs and go from there.


Dead on.  Might need the 1:7 if you plan to shoot tracers though.  But that's it.
2/17/2010 7:48:46 PM EDT
[#6]
I dont think ill be getting my hands on tracers any time soon.
2/18/2010 4:42:28 AM EDT
[#7]
If you want to shoot 77's through it(like Mk262) I'd go with the 1/7 twist.  The shorter the barrel, it usually helps to spin it a little faster.  You can shoot from 40gr to 80gr bullets through a 7 twist.  I've never seen an over stabilized bullet.
2/18/2010 4:57:09 AM EDT
[#8]
Quoted:
...  You can shoot from 40gr to 80gr bullets through a 7 twist.  I've never seen an over stabilized bullet.


Enthusiastically loaded 40gr light HP ammo can (and has, and will again) disintegrate after leaving the muzzle of a 1/7. I've seen 5 rounds make 13 holes at 15-25 feet.

Though, in all fairness, how many people here will ever have a 40gr HP in their mags?
2/18/2010 5:05:27 AM EDT
[#9]
If you want a barrel that can eat anything, try looking into a Wylde chamber as well.

ETA: You're probably going to find this standard or a popular option on stainless, 1/8 twist barrels anyway.
2/18/2010 7:25:20 AM EDT
[#10]
Quoted:
Wylde chamber.


Heard if it once on this forum but never again. If you could shed some light.

Thanks
2/18/2010 8:15:14 AM EDT
[#11]





Quoted:





Quoted:


Wylde chamber.






Heard if it once on this forum but never again. If you could shed some light.





Thanks
The .223 Wylde chamber was designed as a match chambering for
semi-automatic rifles. It will accommodate both .223 Rem and 5.56mm NATO
ammunition. It is relieved in the case body to aid in extraction and
features a shorter throat for improved accuracy.
Quoted:




If you want a barrel that can eat anything, try looking into a Wylde chamber as well.
ETA: You're probably going to find this standard or a popular option on stainless, 1/8 twist barrels anyway.




The high end SPR barrel I'm buying has the Wylde chamber and a 1/8 twist.  



In the course of my barrel shopping, I found a lot of vendors/shops are offering this combination.





If I was going to plow a ton of money into a high end upper(and I am) I'd go with the 1/8 twist.  


The Wylde chamber doesn't mean a lot to me.  I'd be happy with a Wylde or 5.56 chamber.
 

 
2/18/2010 3:00:34 PM EDT
[#12]
That's why people need to learn not to the tip the powder bottle so much.  Just because it can go 3400fps doesn't mean it should even if your putting it through a 1/12 twist.  As a rule I load about 200 fps under what you can get if it's going through a 7 twist barrel with the lighter bullets.  A 52gr matchking at 3000fps is a hammer in a 7 twist.
2/18/2010 3:04:47 PM EDT
[#13]
A Wylde chamber probably is the best all around chamber.  I wouldn't use one on a gun for serious use.  I mean putting the front sight on targets that can shoot back.  Not that it doesn't work, just if you're in a far away sandy place and get a box of Guatamalan M855.  The throat on a Wylde is tight and for good reason, it hammers at 600 yards with 80 grain matchkings.
2/18/2010 3:58:00 PM EDT
[#14]
I simply recommended a Wylde chamber for your intended use of common commercial ammunition with some surplus ammo thrown in.  

You did enough research to consider a good twist rate for your intended purpose, I was just trying to get you to think about the other end of the tube too.

ETA: spelling
2/18/2010 7:17:15 PM EDT
[#15]
Maybe ill look into a wylde chambered rifle build in the future, but for now i want something of service-grade tolerances as i may carry the gun for some time. The loads ill be shooting will be varied and not always of the best quality (if you know what i mean). Thanks for all the input guys.

Javo
2/19/2010 8:57:36 AM EDT
[#16]
Quoted:
Maybe ill look into a wylde chambered rifle build in the future, but for now i want something of service-grade tolerances as i may carry the gun for some time. The loads ill be shooting will be varied and not always of the best quality (if you know what i mean). Thanks for all the input guys.

Javo


I am not sure if you understand what was said about the Wylde chamber before, so I'll just say it again.

It actually has more tolerance for shitty loads and greater leeway in the types of rounds you're gonna use.

I am simply stating this because you seem to be interested in getting the most out of your ammunition (i.e. looking at rifle twist rates suited to your predicted ammunition use).

Again, most stainless steel barrels with a 1/8 twist already have the option for a Wylde chamber.
2/19/2010 9:01:49 AM EDT
[#17]
Quoted:
Quoted:
Maybe ill look into a wylde chambered rifle build in the future, but for now i want something of service-grade tolerances as i may carry the gun for some time. The loads ill be shooting will be varied and not always of the best quality (if you know what i mean). Thanks for all the input guys.

Javo


I am not sure if you understand what was said about the Wylde chamber before, so I'll just say it again.

It actually has more tolerance for shitty loads and greater leeway in the types of rounds you're gonna use.

I am simply stating this because you seem to be interested in getting the most out of your ammunition (i.e. looking at rifle twist rates suited to your predicted ammunition use).

Again, most stainless steel barrels with a 1/8 twist already have the option for a Wylde chamber.


Well it seems im out of page about the Wylde chamber subject. Im gonna read up on it right now. Ill get back to the OP. Thanks for clarification.

Javo
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