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Posted: 8/23/2004 11:47:20 AM EDT
[#1]
I don't know why it is, but it's a fact. The design is inherently accurate. There are a lot of "suspects:" easy-to-use ring & post sights, stock in line with bore, pistol grip, very low felt recoil, and people look really cool shooting it, which boosts self-confidence and greatly improves the shooter's performance. I'm sure somebody here knows a lot more about it than I do.
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Posted: 8/23/2004 11:47:41 AM EDT
[#2]
Not as much slop on the parts as other semi autos.
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Posted: 8/23/2004 11:47:48 AM EDT
[#3]
The thing about the AR-15 that makes it different is it's modular design, and that's where your accuracy comes in.
You can put all kinds of different uppers on an AR that will effect accuracy greatly. An AR with a 26" SS barrel is going to be extremely accurate for several hundred yards. You can get uppers with with even longer barrels that are accurate out to about 1000 yards. It all depends. |
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Posted: 8/23/2004 11:49:46 AM EDT
[#4]
but i just don't see how it could be just as accurate than a well made bolt gun. The fact that it has moving parts when fired would seem like enough to make it less accurate.
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Posted: 8/23/2004 11:51:50 AM EDT
[#5]
"When fired" its moving parts consist of the trigger, trigger linkage, hammer, and firing pin. |
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Posted: 8/23/2004 11:54:46 AM EDT
[#6]
For one thing, it is easy to free float an AR's barrel. You still have the gas tube that does touch the reciever, but other than that the AR's barrel is truely free floating. On rifles like the M-14, you can't free float the barrel, accuracy work involves going the opposite direction: epoxying everything so it is glued into one solid hunk. The result is far inferior to the free floating possible on the AR design. The other thing is that the AR's recievers, bolt carrier, etc., don't have much of anything to do with accuracy. That's because the bolt locks into the barrel, not the reciever. If you remove the gas tube on a floated AR, you have something that is every bit as accurate as any bolt gun. It then becomes a matter of barrel accuracy. |
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Posted: 8/23/2004 11:55:29 AM EDT
[#7]
Who said they are more accurate, on average, than bolt guns? Have you checked to see what benchrest shooters use in their quest for ultimate accuracy? The rifle is more accurate, on average, than most other military rifles. They are capable of better accuracy than the average shooter can manage. They are NOT capable of a higher degree of accuracy than the most accurate bolt rifles, and almost certainly never will be.
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Posted: 8/23/2004 11:56:24 AM EDT
[#8]
It's all about the upper being separate (relatively) from the lower IMHO. There are few moving parts on the upper (none when it's in battery), and when the barrel is floated, the harmonics aren't disturbed.
They're not quite as accurate as a true built up bolt gun but they can be close. |
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Posted: 8/23/2004 11:56:46 AM EDT
[#9]
20" ARs are beating M1As/M14s at 1,000 yards w/o any special mods. |
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Posted: 8/23/2004 11:58:40 AM EDT
[#10]
If the AR has a good barrel, is floated, and the gas tube is removed, it will be as good as the best bolt guns IMO. Of course I'n not a benchrest type, I shoot Highpower. So a barrel I think is perfect is a benchrester's tomato stake. |
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Posted: 8/23/2004 12:05:52 PM EDT
[#11]
I just went from what Feamster wrote in "Black Magic" on that point. |
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Posted: 8/23/2004 12:09:02 PM EDT
[#12]
The bolt doesn't unlock and the action doesn't cycle until the bullet is well on it's way out of the muzzle. It isn't like a blowback action where the parts are moving while the bullet is still in the barrel. |
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Posted: 8/23/2004 12:15:57 PM EDT
[#13]
That is not entirely true. Float tubes, two stage triggers and match sights are mods that are done to AR's in order to get the utmost accuracy out of them for highpower competition. As an AR shooter myself, I would much rather shoot it than a M1A in highpower. |
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Posted: 8/23/2004 12:44:49 PM EDT
[#14]
what I meant was "no special mods with respect to the accross the course ARs". The 1,000 yard ARs are the same as the 200-600 yard varity, except they use a faster rifling twist, which is more in line with the actual issued M-16 . . . The accross the course AR typically useses a 1 in 8 twist, the 1,000 yard version is the same thing but with 1 in 7.7, 1 in 7.5, or 1 in 7. IIRC, 1,000 yard M-14s (M1A, etc.) have specially modified gas systems. |
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Posted: 8/23/2004 12:46:48 PM EDT
[#15]
Also, trigger & sight work (and weights, etc.) make the AR easier to shoot well; the only real accuracy work done to ARs is the float tube and barrel.
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Posted: 8/23/2004 1:11:58 PM EDT
[#16]
Ask your question over in the "Competition Shooting & the Accurate AR" forum.
Some of those guys don't cruise the GD boards. Plenty of good info over there. www.ar15.com/forums/forum.html?b=1&f=10 |
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Posted: 8/23/2004 1:23:53 PM EDT
[#17]
There are a number of contributing factors, I.E., good sights, easily upgradable trigger, good and easily free-floated barrels, and others mentioned above.
But one feature, not mentioned yet is the fact that the AR's bolt locks into a barrel extension. Such a lock-up is inherently more consistent (and thus accuracy enhancing) than the usual turnbolt rifle whose bolt locks into the receiver, not the barrel extension. Note that the Mauser, with its forward lugs on its bolt is deemed more accurate than the Enfield with its rearward lugs. The AR goes beyond the lug-in-receiver approach altogether. There are exceptional turn-bolts. Most benchrest rifles are turnbolts, but this exception proves the rule, as they say. |
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Posted: 8/23/2004 3:39:55 PM EDT
[#18]
Gotcha. Actually, most are now going with faster twists for across the course more like 1 in 7.5" and 1 in 7". The old 1 in 8" twist is slowly fading away, not completely, but most are going faster. The "hot" twist for 1000 yards is the 1 in 6.5" twist so as to be able to shoot the JLK 90's. Just about all highpower M1A's have modified (unitized) gas systems. |
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Posted: 8/23/2004 5:36:56 PM EDT
[#19]
Don't forget truing bolts to barrels, which is becoming pretty commonplace, and good ammo. |
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