FX impact barrel suport

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spyde82

spyde82

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Jul 9, 2019
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I got an idea last night, i was thinking how i could make a barrel suport for my impact.

what if i could make the A13 barrel suport with treads so the shroud was screwed on to instead of the endcap



her is a quick scetch

1581856699_4700824155e4937bb8064d1.49599250_9B051AF4-CAF2-46CD-9356-BB545D0E6BA2.png




what do you guys think? Would it work? 
 
I got an idea last night, i was thinking how i could make a barrel suport for my impact.

what if i could make the A13 barrel suport with treads so the shroud was screwed on to instead of the endcap



her is a quick scetch

1581856699_4700824155e4937bb8064d1.49599250_9B051AF4-CAF2-46CD-9356-BB545D0E6BA2.png




what do you guys think? Would it work?
Click to expand...



It is possible, but it has 2 big disadvantages:

1: You will loose the free floating barrel principle. 

2: You won't be able to swap barrels anymore (the easy way.)




 
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Isnt the A13 block already a barrel support? Its secured to the action and stops the barrel moving?

Appreciate it isnt a conventional barrel band, but im still confused at FX's description of the Impact barrel being free floating, in my book a free floating barrel is supported at one point/ the breech only like the crown 🤔

Click to expand...

You're right, in case of the impact it is more or less a semi-freefloating barrel.

The barrel is supported in a couple of O-rings, but with a 700mm barrel, there still is a lot of barrel sticking out :)
I'm glad that the impact barrel is supported in O-rings, it's barrel is quite thin, and not too rigid either.
 
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1. No it do not have a poi problem at all

2. its still easy to remove just screw it of like you do when you remove the shroud from the barrel,

i just Think it Will stiffen the barrel and help with hammonics.

yes the a13 is a barrel support but by conecting the 28mm shroud it Will make much stiffer
Click to expand...

I've made a custom carbon fiber shroud for my 700mm barrel, and I've placed a fat O-ring between barrel support and shroud endstop to dampen the vibrations.
When I place the barrel, I have to press it in the breech before securing the barrel, so the O-ring is under slight pressure against the front barrel support.

However, this is purely theoretical, and I yet have to try it out if it works:) 



1581878760_6573794495e498de8ac2161.45605683_impact shroud.jpg


 
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Very true, I have the 700mm barrel and it still has plenty of whip to it! Funnily enough I had been pondering a solution for an additional support, I know some people like the idea of a free floating barrel but our stocks are not wood so barrel heating/ enviromental effects cant really effect POI as they do in powder burners.

There isnt enough room to fit something from the buddy bottle imo, I have come up with a solution but not ready to share it just yet (as it will likley be a fail!)

Hoping to make a prototype over the next couple of weeks just for fun, I mean a lot of people shoot lights out without one but itll be fun trying so.... 😁
 
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Very true, I have the 700mm barrel and it still has plenty of whip to it! Funnily enough I had been pondering a solution for an additional support, I know some people like the idea of a free floating barrel but our stocks are not wood so barrel heating/ enviromental effects cant really effect POI as they do in powder burners.

There isnt enough room to fit something from the buddy bottle imo, I have come up with a solution but not ready to share it just yet (as it will likley be a fail!)

Hoping to make a prototype over the next couple of weeks just for fun, I mean a lot of people shoot lights out without one but itll be fun trying so.... 😁
Click to expand...

Looks like we are on the same page :)

Only thing what should be taken into account is that the barrel needs to be supported in O-rings so it can move a bit, and not something rigid like a clamped barrel band.

The expansion coefficient of aluminium and steel is quite different, and it can slightly bend the frame/barrel assy between different temperatures, causing POI shift.

I know Steyr LG110's suffer from POI shift when you tighten the barrel too much in the front barrel support to give an example.
 
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I think you should try using slightly larger orings first. It will make swaping barrels a bit harder but it will make the barrel more stable. There 3 orings, one in a13 and two in the other barrel support part.
Click to expand...

I did that for my ST barrel but had to go back to the originals when I changed over to the STX barrel, even with the thinner rings there is considerably more resistance when pushing the barrel in ( I have to wipe the barrel down with balistol oil before installing, and even then I can hear the machining marks on the barrel as it goes through the rings)
 
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