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Posted: 12/12/2012 10:42:38 AM EDT
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I recently purchased a Colt 6920 and its been great. I want another! The Colt is set up for close quarters I would like another rifle that is set up witha 22 or 24inch barrel that can reach out further. I prefer a 1:7 or 1:8 twist to be able to use the heavier grain in hunting applications. I also want a flat top,.
I am considering getting a Rock River Arms upper and just using it on the colt lower, but at the cost of uppers it seems almost better to just buy a complete gun seperately. |
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if there is no accuracy difference in going from 18 to 24inch i would stick with the shorter barrel. i dont like the weight of a 24inch barrel!!! but i if it puts better groups up ill take it as a second rifle.
Ive never shot a 24inch barrel AR, but i imagine the recoil is that of a .22LR!!! |
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Quality of barrel, trigger, and shooter make the difference in the capabilities of a good rifle. Optics and Free Float rail aid shooter by allowing the pin point accuracy and taking the deflection of the barrel from handguards out of the equation.
I have seen guys with 16" rifles able to shoot just as good as 20" rifles. The advantage you gain with the heavy bull is less likely the barrel will have deflection and heats up slower and cools down slower also. The disadvantage is weight so unless you are bench or prone shooting it the lighter rifle will be better all around. |
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Colt6920Arsenal47,
How far do you want to shoot? What targets do you want to shoot? What kind of accuracy are you looking for? Are you planning to shoot only match ammo? If you plan to put anything besides premium match/hunting ammo through it, a stainless barrel will be a waste of money. I'll bet you'd be pretty surprised at what kind of accuracy your Colt 6920 barrel is capable of. For example, here is what my Lightweight 16" Daniel Defense barrel will do @ 500 yds (5 shots): 
Now, depending on what you're doing, that may or may not be accurate enough. By comparison, here's what my Rem 700 Heavy Barreled .308 bolt did @ 600 (3 shots): 
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Thats some good shooting! I havent tried but once at 250yrds and I couldnt find the paper. Its sighted at 50yrds and its on a super hight mount. Ive heard that daneil defenses are great guns. I didnt realize a 16inch barrel ckuld group like that so far out. Its all about the shooter and he used a lightwieght barrel to i believe so with a slightly heavier profile you could get tighter groups. The longest i would go is a 20 inch upper for 500 yard shots, but 600 plus and i want a .308. |
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The Rock Rivers I have seen and shot are pretty accurate, Noveske, and Larue are very accurate, and White Oak Uppers are accurate as well, plus many others
If you Buy an Upper as opposed to a complete Rifle you save 11% tax (and you can buy or build a lower and still save the tax) it is also easier to pick an Upper with the exact features you want and buy or build the lower to your wants than to find one complete set up that way IMHO. |
| I have a larue with 16 inch barrel and it will shoot sub 4 inch groups at 500 yards if everything is perfect. But any wind at all, and i mean any wnd and it will be all over the place at that range. If you want to consistantly shoot over 500 yards, get a .308. The heavier bullet is not as badly affected by the wind |
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Keep in mind that some states require greater than 22 cal rifle for deer hunting (like Michigan). Are you looking for 6.5 or 6.8 ? i know nothing about the 6.5 or 6.8. i had a .308 armalite and it was a tack driver. ammo is very expensive though. I need to do some research on 6.8 and 6.8. I really wanted the 5.56 so i could share mags/ammo. Ive been reading so much on this forum and i keep changing my mind in what i want to do next. |
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RRA 24" just unpacked it today... yummy
http://i1343.photobucket.com/albums/o784/M4Punisher/newupper.jpg http://i1343.photobucket.com/albums/o784/M4Punisher/newupper2.jpg |
| Before you salivate over that purdy stainless barrel, keep in mind that they "shoot out" much faster than chrome lined barrels. I can spend about 6 years with my 1 MOA (or so) 20" chrome lined HBAR, or settle for about 2 years with a more accurate stainless match barrel. I can pop honey dew melons @ 400 yards. It takes about 5 shots to do it, but that's life at 400 yards. They don't exactly "POP" though. It's more like they kinda' fall in half. The .223 has run outta' poop by then. If you want to do amazing things at that distance and more, look at an AR10 in .308, 260 Rem. or .243. |
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223 for accuracy - you can't go wrong with a National Match in A4 configuration.
You can shoot high-power matches with it, then take off the handle, drop on a scope, and that free-floated 20" heavy-barrel with a 1/8 twist will shoot 77 gr bullets at 600 yards all day - because that's what the gun was designed to do. 
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Quoted:
Before you salivate over that purdy stainless barrel, keep in mind that they "shoot out" much faster than chrome lined barrels. I can spend about 6 years with my 1 MOA (or so) 20" chrome lined HBAR, or settle for about 2 years with a more accurate stainless match barrel. I can pop honey dew melons @ 400 yards. It takes about 5 shots to do it, but that's life at 400 yards. They don't exactly "POP" though. It's more like they kinda' fall in half. The .223 has run outta' poop by then. If you want to do amazing things at that distance and more, look at an AR10 in .308, 260 Rem. or .243. Partially true about the chrome lining lasting longer but it depends on the application and how you plan on using the gun. I am gong to target shoot and hunt coyotes, rock-chucks and prairie dogs. No rapid fire. The excessive heat from rapid fire is the main cause of premature barrel wear. For your desired application from your original question I would go with a match grade stainless (I would want the 1/4" MOA gained from the barrel I desire). Unless you are going to rapid fire (very rapid) your gun will last a damn long time. Here read this: http://cheaperthandirt.com/blog/?p=2678 I won't likely get 5000 rounds through this in the rest of my lifetime. If I do then I guess I get to buy another toy (if I even begin to lose any accuracy... Whatever you choose enjoy and choose what you want. I am going to do some rapid fire in the near future but I will be purchasing a quality chrome lined 14" upper and have more of a CQB set up for that purpose. Just my 2 cents... |
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