Author Topic: Help on barrel bending? (Read 3538 times))

mpbby · « **Reply #20 on:** February 03, 2020, 11:12:56 AM »

Quote from: Roadworthy on February 02, 2020, 04:22:31 PM

Your actual bend may be near the barrel block but you don't really need to worry about straightening the barrel at that point. Bending the barrel at any point may be used to offset the effect of the downward bend. Yes, it would be ideal to remove the problem but for shooting purposes it's only necessary to compensate for it.

+1

Hoosier Daddy · « **Reply #21 on:** February 03, 2020, 02:15:53 PM »

Thank you all!
Patience and persistence sounds like the only thing I need now...

Mossonarock · « **Reply #22 on:** February 04, 2020, 09:07:12 AM »

Here's how I bent my barrels: https://www.gatewaytoairguns.org/GTA/index.php?topic=167652.0

You can put that bend exactly where you want it, exactly the way you want it.

Xraycer · « **Reply #23 on:** February 04, 2020, 10:40:35 AM »

I often read, on GTA, how easy it is to bend/straighten a bent barrel. Well, I found out first hand that in some situation, it isn't that simple.
A couple of years ago, I had my .22 Trail NP2 barrel slipped out of my hand, during cocking, that left it bent upwards. I busted my hump using different methods and brute strength to try to straighten this thing, but to no avail.
That was until just recently, when a member posted that he had used a hydraulic log splitter. Being that I've been wanting to pick one of these up anyway, I went out that day and bought one from Harbor Freight. Well, after all the sweat and frustrations I had gone through, this 10 tons of pressure log splitter did it with little effort. The barrel is now straight, and shooting as well as it originally had.
https://www.gatewaytoairguns.org/GTA/index.php?topic=135445.msg1352563#msg1352563

Xraycer · « **Reply #24 on:** February 04, 2020, 10:43:22 AM »

Quote from: Mossonarock on February 04, 2020, 09:07:12 AM

Here's how I bent my barrels: https://www.gatewaytoairguns.org/GTA/index.php?topic=167652.0

You can put that bend exactly where you want it, exactly the way you want it.

^^^^this is where I got it from^^^^

Thanks again, Tim!

nced · « **Reply #25 on:** February 04, 2020, 12:21:32 PM »

Quote from: Techie on February 02, 2020, 04:14:08 PM

I think most people are way too scared of barrel bending. Just stick it in the fork of a tree and pull. I've done this several times with the stock still on to get leverage, and I've been fine. No, I didn't break the stock. Now I'm no longer scared of doing it. Not really a big deal. Do it a little at a time. 5 minutes later your problem is solved. Just don't go full gorilla on it.

LOL......I also have a "barrel tweakin' tree" beside my back yard shootin' lane...........

I only use it carefully to add "snoop" or windage bends and I also haven't had issues using this method, however the "bending tree" does put bending force at the joint where the barrel is pressed into the barrel pivot block. I've never had issues with this either but it does make me a bit uneasy using the "barrel tweakin' tree".

Hoosier Daddy · « **Reply #26 on:** February 04, 2020, 02:03:39 PM »

I saw the Log splitter thread while I was searching here.
Thanks.

SpiralGroove · « **Reply #27 on:** February 04, 2020, 10:45:02 PM »

Hey Hoosier,
FWIW, I've bent the barrels on all my Weihrauch airguns, some a little, some more.
I don't use scope shims anymore ... "easy peasy" in my wood vise.
Never had an accuracy problem afterwards, they just shoot between 1" and 5" higher

.

Hoosier Daddy · « **Reply #28 on:** February 09, 2020, 02:13:56 PM »

So now that I located my "big" 8" C-clamp, I grabbed 4X4 and gave it another go again with oak blocks under the pivot.
Gave it 3 gradual squeezes the length of the barrel with 2 more about 1-1/2" in front of the pivot, that is where I saw the bend was. Notice the gap at the wedge shaped block just ahead of the trigger group.
Now I have very slight daylight in the middle using my straight edge.

Remounted the stock, and the scope.
Once evening comes and the "Honey-Do" list is done, I will see if that was enough.

Hoosier Daddy · « **Reply #29 on:** February 12, 2020, 01:43:25 PM »

Getting closer.
Think one more attempt will get it.

* Dang attachment Pic is sideways, the group is actually about 1" low and 1" to the right.
When you click on the pic to enlarge it straightens out.

Matchstickshooter · « **Reply #30 on:** February 12, 2020, 02:45:23 PM »

Quote from: Hoosier Daddy on February 12, 2020, 01:43:25 PM

Getting closer.
Think one more attempt will get it.

* Dang attachment Pic is sideways, the group is actually about 1" low and 1" to the right.
When you click on the pic to enlarge it straightens out.

Looks like it's coming along!

Mossonarock · « **Reply #31 on:** February 13, 2020, 09:55:45 AM »

SpiralGroove has a point and I thought about it too. Scope shims are unnecessary if you can bend the barrel on your gun. Some guns with permanently attached sound moderators and suchlike may not be so easy to bend.

Hoosier Daddy · « **Reply #32 on:** February 17, 2020, 01:35:21 PM »

Yesterday I optically centered my scope back to zero, took out the shim, and gave the barrel a few final tweeks and got it shooting straight. Tried several pellets and found H&N FTT in a 4.51 headsize right about an inch high at 10M with the best grouping,
A couple clicks down on elevation and I am happy!
Thanks for all the help folks!

Jshooter71 · « **Reply #33 on:** February 17, 2020, 02:14:57 PM »

Fantastic, Scott! I bet you’re relieved now that’s done! Nice group!

Matchstickshooter · « **Reply #34 on:** February 17, 2020, 02:46:54 PM »

Quote from: Hoosier Daddy on February 17, 2020, 01:35:21 PM

Yesterday I optically centered my scope back to zero, took out the shim, and gave the barrel a few final tweeks and got it shooting straight. Tried several pellets and found H&N FTT in a 4.51 headsize right about an inch high at 10M with the best grouping,
A couple clicks down on elevation and I am happy!
Thanks for all the help folks!

Awesome job,Scott! Nice shooting!

Dennis22 · « **Reply #35 on:** February 18, 2020, 04:37:53 PM »

as with many posting here I have been chasing barrel droop on my FWB 124 I started with the UTG drooper mount and that helped but not enough, then The Hawke rings with inserts, still not enough tried the rings on the UTG mount and way to much. Back to the UTG mount and shims under the scope, could not find the right thickness and did not like that it may have put extra stress on the scope tube.

Bending the barrel terrified me but after reading all that have bent their barrels I built the jig and went to work with the big C clamp slowly moved the poi up and windage over. It took several bends on each but now I am dead on in elevation and less than 1" left at 20 yds. 8 clicks of windage and it is dead center. I'll leave it there and shoot it a while before I make any more changes.

Thanks for helping me put my big boy pants on and overcoming my fears.

Dennis

Dennis22 · « **Reply #36 on:** February 18, 2020, 04:47:03 PM »

Top group after bending scope optically centered. Bottom group 8 clicks right windage

Before bending poi was below and left of the target

Dennis

Hoosier Daddy · « **Reply #37 on:** February 18, 2020, 09:02:09 PM »

Scared the Bezejus out of me as well. but it only took time and gradual steps.

nced · « **Reply #38 on:** February 18, 2020, 10:05:39 PM »

Quote from: Dennis22 on February 18, 2020, 04:37:53 PM

as with many posting here I have been chasing barrel droop on my FWB 124 I started with the UTG drooper mount and that helped but not enough, then The Hawke rings with inserts, still not enough tried the rings on the UTG mount and way to much. Back to the UTG mount and shims under the scope, could not find the right thickness and did not like that it may have put extra stress on the scope tube.

Bending the barrel terrified me but after reading all that have bent their barrels I built the jig and went to work with the big C clamp slowly moved the poi up and windage over. It took several bends on each but now I am dead on in elevation and less than 1" left at 20 yds. 8 clicks of windage and it is dead center. I'll leave it there and shoot it a while before I make any more changes.

Thanks for helping me put my big boy pants on and overcoming my fears.

Dennis

Barrel bending isn't strange to powder burner factories, however they usually do it to straighten the BORE rather than to align the poi with an optically centered scope..........

Perhaps a straight bore is important for powder burners, however it seems that it isn't important for airguns.......

Anywhoo....after messing with a few different adjustable scope mounts on my .177 Beeman R10 decades ago I gave up on the "fiddly contraptions" and starte bending my barrels instead.

Jshooter71 · « **Reply #39 on:** February 18, 2020, 10:32:56 PM »

HaHa! That’s fantastic, Ed! (Still not brave enough to try yet, tho’)

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Help on barrel bending?

Author Topic: Help on barrel bending? (Read 3538 times))