I have an AAC Cyclone on the way. I am trying to decide what rifle twist to get in my barrel. For subsonic, a 1:10 twist would be good to stabalize the bullet but would that affect my long range accuracy at 700-1000 yards?

[This message has been edited by TxAggie72 (edited 5/21/2013 10:29p).]

For a .308, I think you mean 1-10" twist. I personally havent seen a 1-7 twist for .308. For a .223/5.56, then a 1-7 would be best. I have 2 .308 rifles with the 1-10" twist, one shoots strictly subsonics. The other is a Rem 700 AAC-SD and I've read guys shooting out past 700 yds with them.

I forgot to mention. Both the 1-10" twist rifles ive personally shot subs up to 225gr heads with dayum good results.

[This message has been edited by lglidewell (edited 5/21/2013 10:09p).]

Glide, you were correct. Been looking at 223 sub as well. Mind going in too many directions.

The 10 twist is great for 180 grn and up and for sub loads. Not so good for mid-range work from 400 to 900 where the .308 really lives. There are lots of uses for 150-168 grn loads in the .308, not so many for the 180 plus crowd.

The day I built my 300 Blackout was the last day I loaded .308 subs. I used 180grn round noses with Trailboss. Too limited in a bolt gun compared to a mag full in an AR unless you just want them for fun.

To answer the OPs question, I don't have a 10 twist .308 and don't miss it. Am thinking about buying an AAC 7.62SD though...nice rifle.

[This message has been edited by Puryear Playboy (edited 5/21/2013 10:42p).]

Puryear. I don't completely understand what you are saying. Obviously good for subs but how well can a 1:10 twist shoot at long range. I don't care what size bullet, I just want accuracy.

The 1-10" twist barrel would be perfect for what you want to do. You will see no difference in performance at the ranges you are asking about. If you would to talk more about it call me and I can tell the concerns on both sides.

A subsonic 308 round is an awesome tool in the deer blind. I can't tell you how many pigs/turkeys I have run off with them.

10 twist is preferred for heavy for caliber bullets in the .308...it stabilizes them better. Heavy for caliber bullets are used for very long range work as the retain velocity better and fly flatter (down range) due to their higher BC.

10 twist barrels often don't shoot the lighter 150 & 168 grn bullets as well. These weights are better suited for the ranges where the .308 does it best work. They BC fine for those distances and can be launched faster so they are flatter and have less wind drift due to short flight time to target.

The 10 twist in a .308 is more of a specialist for ultra long range work.

DP

[This message has been edited by Puryear playboy (edited 5/22/2013 8:32a).]

Puryear Playboy--

I agree with you if he wanted to shoot the 150gr bullets, but he said he wanted to shoot 700-1000 yards. No way he is using either the 150 to get there. Most likely he will be shooting the 175 for his super and the 220RN for his subs. So yes the 1-10" with be perfect for that. Plus if he chooses the 155 VLD or Scenar then the 1:10 will work well for that as well.

Yep...was just clarifying my post above for the OP. My concern was that he doesnt understand what he is giving up.

And...if you really want to spend all your time down range of 700 yards there are better rounds for that purpose.

My point is he isn't giving up anything unless he wants to shoot varmint loads.

currently working on a 308 with the 155 scenars and I can assure you they have no trouble shooting well.

I don't think there is a better all-around cartridge than a 308 if you want to shoot sub-sonic and super-sonic. Sure it isn't the best sub-gun and it isn't the best super-sonic gun either but they are pretty dang good at both.

Keep your panties on SSC. I ain't questioning your judgement or trying to prove I have a bigger pecker than you. I will let you win that one since it seems to be so important to you.

I hope we are both here to try and educate the OP on a subject that is clearly new to him.

You are absolutely correct that 155 Scenars will fly awesome from a 10 twist barrel, but the OP may not share your enthusiasm about them when he finds out how much they cost. The object here is to give the OP all the info he needs to make his own decisions...not make them for him.

.223 subs? Do ppl do that? Would it be better to just shoot 22lr?

PP I fully agree that we are here to help in any way we can and I am not worked up at all. I just didn't understand where he would be hindered by a 1-10 twist barrel in his application.

I have read many of your posts and you are very knowledgeable on many aspects when it comes to firearms and thank you for sharing your knowledge.

When you compare the 155 Scenar to the 178 AMAX it is a big jump in price.

OP--As stated before I think the 1-10" is a great option in this situation. You would just need to stick with the heavier 30 cal bullets. As PP pointed out if you are wanting to shoot the lighter varmint style bullets then you would need to look at a 12-14 twist barrel.

On the sub sonic side of things take a look at http://www.lehighdefense.com

nobody does sub 223, that is call a 22LR