Twist Rate ?? for 7.62x39?

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[ARCHIVED THREAD] - Twist Rate ?? for 7.62x39?

Posted: 9/25/2004 9:36:29 PM EDT

I am looking between uppers in 7.62x39 for my bushy,,,

i believe RRA has a barrel w/ a 1/9 twist rate,,, Model1 has a barrel w/ a 1/10 twist,,,,and the colt sporter had a 1/12 twist rate?

how does this help the accuracy, and what other factors can this affect on the bullet?...(what twist causes better ballistics at certain ranges??)

if anyone has any knowlege on this please help me out..

Posted: 9/30/2004 9:01:24 PM EDT

[#1]

If anyone can reply, i have a gun show comin up saturday...
lookin to buy a 7.62 AR, need some advice on twist rates?

Posted: 10/1/2004 7:39:46 AM EDT

[#2]

I believe the standard rifling twist rate for AK47 (7.62x39) is 1:240mm (about 1:9.5").
123-grain bullets will stabilize with less twist AFAIK but the 1:240mm will stabilize for example subsonic 180-grain bullets, too. Which can be fun if you can get a suppressor.

Posted: 10/1/2004 2:49:01 PM EDT

[#3]

Thanks for the info, anyone else have any other advice or tips on looking for a 7.62 at the gun shows?...

does too short a barrel (11.5) deterioate performance, should i get atleast 14.5" with suppressor?

also, any other advice on M-A parts or model 1 sales is better, worse,..your opinions?

Posted: 10/1/2004 2:55:04 PM EDT

[#4]

If you get a barrel under 16 inches its gotta be a pistol, MG or SBR. Be prepared for maybe 200 fps velocity loss in an 11.5, and a significant noise and flash. Should be fun. I don't reccomend it for a defensive weapon, the caliber sucks and mags are finicky. Lots of fun for a range bitch though.

Posted: 10/1/2004 3:38:42 PM EDT

[#5]

it is mostly for the range...teh idea for teh 7.62 is cheap bullets on my part, plus a bigger caliber for closer quarters...who knows????

thanks for any ideas

[ARCHIVED THREAD] - Twist Rate ?? for 7.62x39?

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