AR15.Com Archives
 bipods decrease accuracy?
blitztheory  [Member]
3/18/2005 6:12:47 PM EST
i bought an $800 scope, but am making pathetic 6 inch patterns at 100 yards with medium grade ammo.

how much of this innacuracy might be due to the stiffness of the harris bipod on a wood bench?

(i need to test it without the bipod, obviously, but what are yourthoughts on this?)
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Guncrazy223  [Member]
3/18/2005 7:28:04 PM EST
depends if the bipod is putting pressure on the barrel.

I have guns that the bipod is on the free floating part of the stock. So the bipod has no effect.

What kind of gun is it.
blitztheory  [Member]
3/18/2005 8:39:44 PM EST
bushmaster .308 with springfield 4-14 x 56 scope.
Combat_Jack  [Team Member]
3/18/2005 8:43:06 PM EST
I know that bipods are known to hurt accuracy when used on hard surfaces. Don't know why.
Dawg180  [Team Member]
3/19/2005 7:27:53 AM EST
What kind of groups are you shooting without the bipod? What about iwth straight iron sights?

Guncrazy223  [Member]
3/19/2005 6:39:00 PM EST
Bipods only hurt accurcy if they come in contact with the barrel. When a gun is fired and the bullet travels down the barrel it vibrates ALOT. By free floating the barrel the vibratins can be consistent. Things don't change between shots. A bipod between a hard barrel and a hard surface Changes the vibrations significantly. It also induces inconsistency into the accuracy formula. There is a reason ALL good precision rifles are freefloated.

Look at guns like the mini-14 and druganov(sp?) they suffer from barrel whip. Where the barrel vibrates too much. Basically a barrel that is too long for it's diameter. Barrel vibration is extremely important in accuracy.
SS109  [Team Member]
3/19/2005 7:52:52 PM EST
My barrel mounted bipod on my AR screws up the accuracy.
fnman  [Member]
3/20/2005 4:43:05 AM EST
If your barrel is free-floated, you should not have any accuracy degredation. I would suggest using Premium Federal Match 168 gr ammo. That is the agreed upon most consistantly accurate factory ammo available. Springfield optics are also known to take a dump so ck that as well.
Aimless  [Site Staff]
3/20/2005 4:00:47 PM EST
Try it prone on the ground, you might see better results.
Hoplophile  [Team Member]
3/20/2005 5:17:16 PM EST
Yes bipods can hurt accuracy. You should never rest the rifle directly on a hard surface because it will bounce during recoil and throw the shots off. Resting a bipod on a hard sruface does the same thing. If you're on a hard surface you need to use a softer rest such as a sandbag or a backpack.

ETA that you can try putting a piece of foam rubber such as a square cut from a sleeping pad under the bipod to absorb the bounce.
FREEFALLE6  [Team Member]
3/20/2005 5:22:16 PM EST
Try resting the rifle on a sandbag in the prone position.

I get my best results that way. Your rifle should be shooting 1 MOA or less with good ammo.

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