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Posted: 6/11/2009 10:02:30 PM EST
I was wondering if a 1/9 twist rate is good for shooting .22 LR?
Link Posted: 6/11/2009 10:25:59 PM EST
Originally Posted By adampini:
I was wondering if a 1/9 twist rate is good for shooting .22 LR?

Works great for me out of a 16" 1x9 carbine barrel
Link Posted: 6/11/2009 10:31:46 PM EST
I have to say no.
Link Posted: 6/11/2009 10:57:47 PM EST
At 50yrds it does much better than I would have expected. At 80yrds, not so much. At 100 I don't even mess with it.

Messed with it at 15-30yrds and it did pretty well.
Link Posted: 6/12/2009 3:09:17 AM EST
For some reason I thought the dedicated uppers in .22LR were 1in12.
Link Posted: 6/12/2009 3:11:19 AM EST
It does ok but the dedicated barrels are 1 in 15.
Link Posted: 6/12/2009 3:35:27 AM EST
Originally Posted By adampini:
I was wondering if a 1/9 twist rate is good for shooting .22 LR?


What do you want to do with it and how much accuracy do you need?

A 1/9 twist barrel with a .22LR conversion kit will probably give you 1 1/2" to 2" groups at 25 yards. If you are lucky maybe 1" groups at 25 yards.
Link Posted: 6/12/2009 3:43:19 AM EST
1:9 works good for the Aguila 60 grain "sub sonic sniper" ammo, standard .22 lr twist is 1:16.
Link Posted: 6/12/2009 4:09:26 AM EST
[Last Edit: 6/12/2009 4:09:54 AM EST by peasant]
My BM 1-9 barrel was shooting 2" at 100 yards last week. Not kidding. CCI Stanfard Velocity ammo. But, it took 30 clicks of elevation up.
Link Posted: 6/12/2009 5:43:40 AM EST
[Last Edit: 6/12/2009 5:46:41 AM EST by ZXD9]
My 1:8 shooting Remington Target .22 40gr ammo got me 3 groups of 10 shots that were under 1" using iron sights at 25y. 2 additional groups were just over an inch.

Group Width Height
1 - 0.959 - 1.22
2 - 0.634 - 0.87
3 - 0.771 - 1.096
4 - 0.547 - 0.845
5 - 0.809 - 0.957


I use the Ceiner kit in an RRA upper.
Link Posted: 6/12/2009 8:19:18 AM EST
It may do OK, but ideal would be 1/12 or a dedicated barrel of 1/13(Colt's new .22 M4) - 1/16(Spike's)
Link Posted: 6/12/2009 3:55:50 PM EST
Originally Posted By peasant:
My BM 1-9 barrel was shooting 2" at 100 yards last week. Not kidding. CCI Stanfard Velocity ammo. But, it took 30 clicks of elevation up.


This is how I've talked myself out of a conversion. How much are they off at a more modest difference?
Moon

Link Posted: 6/12/2009 3:58:42 PM EST
I used an old Colt barrel off of an M16 upper. Supposed to be 1 in 12 twist. Mine is pretty accurate at 50 yards.


Link Posted: 6/12/2009 6:26:39 PM EST
1-14 to 1-16 twist has historically been best for .22 l.r.
1-12 twist A1 barrels always worked pretty good for me with a M-261 Sub Caliber Adapters.
My 1-9 twist barrels are not too bad with .22 l.r. but nothing to brag about and I am still trying different ammo to find the best.
My 1-7 twist barrels hates .22 l.r.
Link Posted: 6/12/2009 10:00:46 PM EST
Sorry to thread jack, but has anyone run .22 out of a 1/7 barrel?

The only thing keeping me from getting a 22lr kit is all my rifles have a 1/7 twist.
Link Posted: 6/12/2009 10:13:41 PM EST
The main problem is the .22 LR is .223 and 5.56 is .224. in bullet dia..
Link Posted: 6/13/2009 3:08:23 AM EST
Originally Posted By platypusREX:
The main problem is the .22 LR is .221 and 5.56 is .224. in bullet dia..




Link Posted: 6/13/2009 4:52:37 AM EST
Dumb question but:
Could you shoot ratshot out of your gun without messing it up?? Either a RRA or Noveske chrome lined???
Link Posted: 6/13/2009 5:43:13 AM EST
Originally Posted By kanek:
Dumb question but:
Could you shoot ratshot out of your gun without messing it up?? Either a RRA or Noveske chrome lined???


I'm not 100% but I'd guess that a chrome-lined barrel would be just fine. You may lead up a non chromed barrel after hooting alot letting the barrel heat up, kind of like shooting bird shot out of a rifled barrel shotgun.(I have not had this experience with a shotgun but read about it a few times)
Link Posted: 6/13/2009 5:57:14 AM EST
The Fed Bulk is a little bigger diameter from what I've been told. The ideal twist for .22 is 1 in 16. I believe Spikes uses a 1 in 15. Accuracy from my Spikes Lothar Walther 11.5" is 1/2" and under @50 yards.
Link Posted: 6/13/2009 12:06:25 PM EST
Sounds like I'll plan on just running a dedicated upper.
Link Posted: 6/13/2009 12:55:08 PM EST
[Last Edit: 6/13/2009 12:55:44 PM EST by Gary_631]
Originally Posted By Gibbles:
Sorry to thread jack, but has anyone run .22 out of a 1/7 barrel?

The only thing keeping me from getting a 22lr kit is all my rifles have a 1/7 twist.


I shoot soda cans at 50 yards all the time with my 16" 1/7 LMT upper. Heck even hit a few at 100 yards.

But my 1/9 shoots alot better
Link Posted: 6/13/2009 1:11:25 PM EST
I've only tried out to 25 yards with my .22 kit in my 1/7 barrel, but it makes fist sized groups (i've never measured them) which is good enough for me
I'd guess 3" groups, shooting offhand
Link Posted: 6/13/2009 1:13:28 PM EST
The best accuracy will come from a 1:16 twist meant for a .22lr. Out to 100, a standard 1:9 will ring steel, but it probably won't shoot tight enough groups to score well on a 100 yard target.
Link Posted: 6/13/2009 1:17:30 PM EST
Originally Posted By Gibbles:
Sorry to thread jack, but has anyone run .22 out of a 1/7 barrel?

The only thing keeping me from getting a 22lr kit is all my rifles have a 1/7 twist.


But I'm sure you shoot a TON of 70+ grain out of it, right?
Link Posted: 6/16/2009 6:47:30 AM EST
I'm prolly much too late on this one, but I figure everyone can benefit from this info. It's a great write up on different uppers firing .22(be it dedicated, conversion, different bbl twists... etc..)...150 round groups on basicly everything BUT a 1/7, just assume it would be worse then everything listed...... = /

Range reports about half way down the first page.
http://www.ar15.com/forums/topic.html?b=3&f=15&t=441890&page=1
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