Barrel Movement


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Old 01-11-2014, 06:54 AM   #1
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Default Barrel Movement

I've recently observed that if I push and pull on the end of the barrel of a heavy-barreled, long-range Savage 112 BVSS, I can see the free-floating barrel move relative to the stock. The action is torqued to 50 inch-pound in its pillar-bedded laminated stock. I thought everything would be rigid and not move. I was surprised thought maybe there was something wrong with the rifle. Then, I did the same thing to a Remington 700 Sendero. On the Remington, the action is torqued to 45 inch-pounds in an HS Precision synthetic stock with a full-length aluminum bedding block. How could there be movement. Is this normal?



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Old 01-11-2014, 02:37 PM   #2
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Its normal.don't try to "fix" it.

All barrels vibrate as the bullet travels down the tube the reason for free floating is so the stock does not interfere with that vibration giving more consistent shot groups.



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Old 01-11-2014, 04:08 PM   #3
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I've always known that the barrel vibrates when fired but I would have never guessed you see the movement just by applying pressure with your hands. Interesting!

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Old 01-11-2014, 04:15 PM   #4
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yup barrels bend but what the op is seeing is most likely the stock itself bending making it look like the barrel is. take the stock off and try to do the same thing i doubt your going to see any perceptable movement.

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Old 01-11-2014, 04:59 PM   #5
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A forend play around the barrel is normal for a free floating barrel, but not for a bedded one. Bedded means attached. As long as your barrels are spec'd to free float, you are good.

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Old 01-11-2014, 05:01 PM   #6
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that movement the stock makes bothers some people. myself included and it's an easy fix if it does bother you. a steel rod and some epoxy will make the fore end stiffer and not flex as much.

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Old 01-11-2014, 05:07 PM   #7
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Just wanted to add, a free floated barrel by itself is not the cat's meow of rifle construction. It is often advertised as a big deal, but actually it is a way to sidestep the stock fitting procedures. A good bedding whenre the barrel and the stock oscillate in harmony is more expensive.

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Old 01-11-2014, 05:11 PM   #8
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Quote:
Originally Posted by Mercator View Post
Just wanted to add, a free floated barrel by itself is not the cat's meow of rifle construction. It is often advertised as a big deal, but actually it is a way to sidestep the stock fitting procedures. A good bedding when the barrel and the stock oscillate in harmony is more expensive.
please explain the barrel and the stock oscillating in harmony. my experiance has been to lock the reciever and the stock into one cohesive unit and to allow the barrel to be free floated so it not affected by pressure from the stock.
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Old 01-11-2014, 05:20 PM   #9
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The stock acts as a dampener. There will still be some oscillation, but much less than in a regular size free floating barrel. The heavier the barrel relative to the projectile, the less it benefits from a bedding. A lighter, thinner barrel may experience a significant whip affecting its mechanical accuracy.

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Old 01-11-2014, 08:13 PM   #10
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I have always thought and told; any movement between the stock and the action is detrimental to consistency hence accuracy. I understand the harmonics but the more you reduce barrel whip, the more consistent your groups will be.



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