Is there a brace made for a free floating barrel, I am worried about POI shifts if I bump the barrel?
Free Floating barrel
- Thread starter dark1961
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My Marauder is basically free floating since the front ring does not touch the shroud and I pick it up by the barrel shroud on many occasions with no POI shift. Of course YMMV!
It might help to know what gun are you referring to.
It might help to know what gun are you referring to.
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I bump the barrels/suppressors all the time on my FX guns and have not experienced a problem.
Though I prefer the fixed barrel setup (barrel band) like on my AA S410.
Though I prefer the fixed barrel setup (barrel band) like on my AA S410.
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Free floating has it's advantages and disadvantages over fixed barrels.
Free floating barrels barely suffer from temperature changes and pressure changes in the airtube/bottle (yes the air tube flexes a little while the pressure is changing). The disadvantage is indeed that there is a POI change possible when you slam the barrel (although you would need to bump it hard before that happens).
Fixed barrels have the opposite advantage and disadvantage: more rigid due to the extra support from the air tube/bottle but suffer from temperature changes and pressure changes in the tube/bottle.
Sometimes there is a mix of both, that there is a brace around the airtube and barrel but the barrel is supported in an oring inside the brace. This reduces the movement of the barrel that's possible when bumping and decreases the effects of temperature and pressure drop.
Free floating barrels barely suffer from temperature changes and pressure changes in the airtube/bottle (yes the air tube flexes a little while the pressure is changing). The disadvantage is indeed that there is a POI change possible when you slam the barrel (although you would need to bump it hard before that happens).
Fixed barrels have the opposite advantage and disadvantage: more rigid due to the extra support from the air tube/bottle but suffer from temperature changes and pressure changes in the tube/bottle.
Sometimes there is a mix of both, that there is a brace around the airtube and barrel but the barrel is supported in an oring inside the brace. This reduces the movement of the barrel that's possible when bumping and decreases the effects of temperature and pressure drop.
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Barrels with really thin walls, which are prone to vibration harmonics when fired can gain benefit from bracing (Benjamin Maximus as an example). Most people's groups tighten up with that gun when they add a second clamp.
But airguns with thicker walled barrels work really well when floating (Benjamin Marauder as an example).
But airguns with thicker walled barrels work really well when floating (Benjamin Marauder as an example).
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Maximus and marauder have the same dia barrel.
Free floating does remove the effects of stretch from psi change.
A good mounting in the reciever is needed for a really accurate free floated barrel.
John
Free floating does remove the effects of stretch from psi change.
A good mounting in the reciever is needed for a really accurate free floated barrel.
John
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SpySir, I will have to confirm that, I have had both of those rifles apart, I thought my Marauder barrel was thicker, but then, I will have to pull my shroud on the Marauder to say for sure.
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