The Frontier Sixshooter Community Message Board - I'm not interested in anything under 55 grain at all...

I'm not interested in anything under 55 grain at all... (reply)

rob — Tue, 08 Dec 2015 06:46:40 +0000

so it looks like I'm good to go. I would like to try some heavier bullets though so the 7" twist in the AR should help in that regard. My Mini-14 is the newer tactical model and it's a 1:9". I haven't tried anything over 60 grains in it (except the 64 grain Winchester Razorback hunting stuff and it wasn't good...but it was excellent in my former 1:9 AR).

Do you think a 7" twist is too much for 55 grain bullets? (reply)

Warhawk — Tue, 08 Dec 2015 06:15:55 +0000

Many years ago, I had a Mini-14 with a 1:7 twist barrel. I was hand loading varmint loads mostly with 50 grain bullets designed to "explode" on impact. These shot extremely well in my bolt gun, but when I tried them in the Mini I wasn't even on target. I moved the targets In until I finally figured out that the bullets were disintegrating in flight. I can only think that these super lightly constructed bullets couldn't handle the high RPMs of th 1:7 barrel.

55 FMJ or factory soft point ammo never gave me any problems.

I have not heard of a problem (reply)

bj — Tue, 08 Dec 2015 02:01:38 +0000

I know I see people running various 50-55 grain bullets fast out of 20" 1:8 barrels. I don't know that I've seen a 1:7 barrel but somebody makes 1:6.5 barrels for the guys shooting 90 grain bullets. I think if you loaded up 40 or 45 grain bullets intended for a .22Hornet and such you could have vaporization before hitting the target. I've heard that the 1:8 barrels work really well with bullets like the 60 grain Sierra.

Do you think a 7" twist is too much for 55 grain bullets? (reply)

Cherokee — Sun, 06 Dec 2015 13:03:56 +0000

I shoot 55 gr bullets in my 1/8 and 1/7 twist AR's most of the time and can see no difference in accuracy vs 1/9. Now, the little 45 grainers, that's a different story because they frequently don't make it to the 100 yd target; I save those for the 1/9 guns.

Excellent, thank you. (reply)

rob — Sun, 06 Dec 2015 05:07:36 +0000

You'll never be able to tell the difference. (reply)

Miles — Sun, 06 Dec 2015 05:05:13 +0000

The real ballistics gurus get into deep technical explanations of the gyroscopic effects on stabilization, in the descent phase, of the parabolic during external flight (resembling the schisms surrounding the arguments of the hypostatic union) but for us normal folks, it doesn't matter.

Good, that's what I thought but figured I'd ask to be sure.. (reply)

rob — Sun, 06 Dec 2015 04:37:10 +0000

Got an upper coming from PSA. Now for the eternal wait:)

Do you think a 7" twist is too much for 55 grain bullets? (reply)

MS — Sun, 06 Dec 2015 04:30:37 +0000

No, unless they are super thin jackets, extra spin just makes things work better.

Do you think a 7" twist is too much for 55 grain bullets? (reply)

rob — Sun, 06 Dec 2015 03:42:08 +0000

I'd like to shoot the heavier bullets too so that's a plus but there's so much good 55 grain stuff out there I'd like it to do really well with them also.

Thats a great deal if these are well made quality stuff... (reply)

Warhawk — Sun, 06 Dec 2015 00:01:53 +0000

DSG Arms is good to go. There is a lot of discussion about these uppers on ARFCOM, apparently the barrels were made up by Seekins for an order for Radical Firearms that fell thru. I've been tempted to pick one up myself, even though I have too much AR stuff already.

Thats a great deal if these are well made quality stuff... (reply)

rob — Sat, 05 Dec 2015 23:48:53 +0000

Don't know much about DSG but I'm thinking hard about ordering this before I go to bed tonight.

Thanks, looks like they have (reply)

Warhawk — Sat, 05 Dec 2015 21:48:50 +0000

https://dsgarms.com/dsghu1007

Another option, with a Rock Creek 5R barrel

Thanks, looks like they have (reply)

rob — Sat, 05 Dec 2015 18:18:17 +0000

a pretty good selection of uppers right in the ballpark of what I'm looking for.

Look here at Fulton Armory too. (reply)

Miles — Sat, 05 Dec 2015 17:49:45 +0000

http://www.fulton-armory.com/FAR-15-Complete-Uppers.aspx

AR upper suggestions please... (reply)

Gunner — Sat, 05 Dec 2015 17:03:41 +0000

Lots of deals going on right now on complete AR uppers…..

http://palmettostatearmory.com/ar-15-05/barreled-upper-assemblies.html
http://www.pkfirearms.com/factory-built-oem-uppers
http://www.redbarnarmory.com/buy-AR-15-complete-upper-receivers-online-s/1856.htm
http://www.rainierarms.com/upper/complete-uppers/ar-15?dir=asc&order=price
https://www.adcofirearms.com/acc/ProductLine_sub.cfm?subcategory=5.56 Uppers
http://www.bravocompanyusa.com/BCM-AR15-Upper-Receiver-Group-AR15-s/118.htm
http://www.budsgunshop.com/catalog/index.php/cPath/36_1994/Upper+Receivers/

I have had two Rock River Arms rifles and my current M4 lite weight rifle was built using a modified RRA complete upper, always been 100% satisfied with all my RRA stuff. I prefer the Wylde chamber, seems to give better over all accuracy verse a standard 556 Nato or 223 chamber with what every ammo you use.

Gunner

Famous for therte FN FAL rebuilds and new FALs (reply)

Rob Leahy — Sat, 05 Dec 2015 16:21:38 +0000

DSArms.com

http://www.dsarms.com/
I have 3 of these uppers, very reliable...
http://www.dsarms.com/p-15769-dsa-145-chrome-lined-barreled-upper-receiver-assembly-556... ..

Ok, I'll check PSA....who is DSA? (reply)

rob — Sat, 05 Dec 2015 14:57:24 +0000

PSA great buys and the work! Also look at DSA (reply)

Rob Leahy — Sat, 05 Dec 2015 14:50:18 +0000

I have several from them. 14.5" light barrel mid length gas tube. 270.00 sans BCG. Stands up very well to 1,000 +/- rounds as fast as we can load it and shoot it with a slide fire stock...

I've considered just buying a Bushmaster upper, (reply)

rob — Sat, 05 Dec 2015 14:38:57 +0000

flattop, floated quad rail model (they seem to run around $550-600 complete) and see how that performs and then upgrade anything that doesn't perform to my satisfaction after that.

AR upper suggestions please...

rob — Sat, 05 Dec 2015 14:34:48 +0000

I got rid of my previous AR and bought a Mini-14 Tactical. It's not as accurate but it's good enough, extremely reliable with all ammo and I really like its operating system better overall. But I do have my Spikes lower I built with quality components and need to finish it off with a good upper. I want something in the way of an 18" mid length barrel that's accurate but I also don't want to go overboard and buy a Wilson upper for $1500 either (or whatever they cost today). I'm not opposed to buying the components and building it or just buying a complete upper. I just want something that's accurate and reliable when I'm done, a barrel that has the right sized gas port drilled in it, etc. I am leaning to a nitrided barrel. Not sure if I should go with a standard 5.56 or a Wylde chamber, etc. Just figured I'd ask you guys, get some advice and then go for it. Any particular brand or thing I should avoid? Thanks,

rob