GTA
All Springer/NP/PCP Air Gun Discussion General => Machine Shop Talk & AG Parts Machining => Topic started by: Ronno6 on March 11, 2021, 04:45:28 PM
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I purchased 2 Daisy 822 valve/barrel assemblies that had had the barrels cut off with a metal wheel.
One is 13-3/4" the other about 13"
Daisy straw barrel is 20 1/2" I think......
These are .361 OD if memory serves. Plenty of meat to do a M/F press joint w/tack weld.
Is this at all feasible??
Any y'all ever attempted something like this?
Or, should I just make 2 carbines??
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Might be hard with a rifled barrel.
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Might be hard with a rifled barrel.
What would happen if grooves didn't match perfectly?
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I suspect lead would collect there. Probably give you fits with accuracy.
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Yes ... https://www.gatewaytoairguns.org/GTA/index.php?topic=183960.msg156099741#msg156099741 (https://www.gatewaytoairguns.org/GTA/index.php?topic=183960.msg156099741#msg156099741)
Tho the "CLOCKING" of the rifling is a problem unless you can precisely address it
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Why don’t you do this.
Put both rifles together.
Shoot them over the clock.
If the FPE is close to what was historically stated for an 822- leave it alone and focus on accuracy.
If it’s loud or you don’t want the soda straw floating in the tube, get the dimensions and get a 3D printed LDC made.
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Yes ... https://www.gatewaytoairguns.org/GTA/index.php?topic=183960.msg156099741#msg156099741 (https://www.gatewaytoairguns.org/GTA/index.php?topic=183960.msg156099741#msg156099741)
Tho the "CLOCKING" of the rifling is a problem unless you can precisely address it
Wow! Fascinating....Thanks.
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Why don’t you do this.
Put both rifles together.
Shoot them over the clock.
If the FPE is close to what was historically stated for an 822- leave it alone and focus on accuracy.
If it’s loud or you don’t want the soda straw floating in the tube, get the dimensions and get a 3D printed LDC made.
I am using the 822 components to convert Winchester 1977 to .22.
I may give that a try....
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The other alternative is a .22LR barrel liner, but I don’t know if all the land/groove dimensions are correct for pellets at an 880 power level.
Some have turned down a crosman barrel to fit.
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The other alternative is a .22LR barrel liner, but I don’t know if all the land/groove dimensions are correct for pellets at an 880 power level.
Some have turned down a crosman barrel to fit.
That is what I am currently using in my conversion.The bore is a bit oversize, but not grouping too badly......
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You could try adding a section of smooth bore barrel ahead of the rifled section like Motorhead was experimenting with ???
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You could try adding a section of smooth bore barrel ahead of the rifled section like Motorhead was experimenting with ???
I may give that a shot.
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I’ve been thinking about this.
What I’ve suspected, but don’t know is that this is what a “smooth twist” barrel is: Somehow pushing the rifling button into the tip of the cylinder and clamping down.
Maybe do something similar with your 822? I don’t know where you’d get an Airgun .22 rifling button or .22 ID tubing- but there is an idea.
About the RF barrel liner. Maybe try the biggest head size FTTs you can get? I think they go up to 5.55 or 5.56?
I have very little experience with welding tiny little things.
Friction stir or laser welding isn’t normally on the hobby level.
And if you attempted to tig the smooth section to the rifled section, complications lining up ID and keeping steel smooth on the inside.
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A cerrosafe casting of one piece or the other casted about 4” long, push it halfway out. then ‘thread’ the sections together. Short smooth leade for a transition to help prevent leading. Thin, snug fitting tube over the splice. I would use loctite to test.
Then remove cerrosafe.
That’s just a suggestion as I’ve not tried it.
Dave
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Welding is not necessary. Loctite will hold when properly applied.
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Welding is not necessary. Loctite will hold when properly applied.
You’re right. I forgot that’s how people feline barrels. A wedding band marrying the 2 tubes.
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Locktite 638 is some tenacious stuff once cured takes a lot of heat and a big impact to get a fastener free.
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use 640 grade myself
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use 640 grade myself
I have a bunch of the 638 left over from doing recalls on polaris slingshots. It went on the axle splines and the double nuts. Some times it took an hour of heat with a map torch to loosen up.
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Welding is not necessary. Loctite will hold when properly applied.
You’re right. I forgot that’s how people feline barrels. A wedding band marrying the 2 tubes.
MEEEEOOOOWWWW!!!
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Welding is not necessary. Loctite will hold when properly applied.
You’re right. I forgot that’s how people feline barrels. A wedding band marrying the 2 tubes.
MEEEEOOOOWWWW!!!
Ha ha! Yea... autocorrect.
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i have a section of .22LR barrel liner which has a slightly larger bore than the 822 barrel.
May make the perfect extension........