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Barrel Bending


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#1 Jesse Tischauser

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Posted 31 October 2010 - 10:14 PM

My Benelli M1 shoots slugs 18" low and 6" left at 100 yards. I was talking with Taran Butler at the AR Section 3 gun match about it and he said that he has a barrel bending device taht he fixes improper POI on shotgun barrels. I was wondering if anyone knows of a local gunsmith that can do soemthign similar. I figure the trap/skeet/clays guys that run those $15k shotguns know all about this stuff. Somebody please help!

#2 Wormydog1724

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Posted 01 November 2010 - 09:48 AM

I've known a few bird hunters that claim their barrels were bent so they could lead birds better. I think they just shut them in a door and don't want to look stupid. (My Dad and his hunting partner)

#3 Chambers

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Posted 01 November 2010 - 10:27 AM

TB was talking about a special tool used with a vice. A relative of mine is a pretty talented Sporting Clays guy. I bet he knows...I'll find out.

Have you asked Kurt M yet?

#4 mike cyrwus

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Posted 01 November 2010 - 11:31 PM

Thats a old gunsmith tweak. Theyd wedge them in the rafters and hang on it some to adjust the pattern.

If you sign a disclaimer form, Ill do it. :unsure:

#5 Jeff

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Posted 02 November 2010 - 08:57 AM

My Benelli M1 shoots slugs 18" low and 6" left at 100 yards. I was talking with Taran Butler at the AR Section 3 gun match about it and he said that he has a barrel bending device taht he fixes improper POI on shotgun barrels. I was wondering if anyone knows of a local gunsmith that can do soemthign similar. I figure the trap/skeet/clays guys that run those $15k shotguns know all about this stuff. Somebody please help!


Reformed Skeet shooter here. I'd bet legit gunsmiths straightned more bent barrels than they ever "bent" over the years. Fitting a birdshot gun is all about making the stock fit the shooter. A custom shotgun stock will show a little cast (bent in relation to it's long axis) so the bead falls in line with the shooters eye when the gun is shouldered. You can alter the butt plate cut angle to correct elevation issues also. I know you don't want this on a tac shotgun but take a look at the adjustable butts they put on skeet and clay guns... you will see the reason why these work in short order.


On a tactical slug gun... I'd look in to doing whatever it takes to make the sights work correctly. A lot of ghost rings, etc need a little file work or shim work so they fit right. If they "lean" a little to the left or right you will see some sighting error. I've had that same issue installing tang sights on lever and single shot rifles also... the sight base needs a little tweaking to square things up.
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#6 Jesse Tischauser

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Posted 02 November 2010 - 10:27 AM

Reformed Skeet shooter here. I'd bet legit gunsmiths straightned more bent barrels than they ever "bent" over the years. Fitting a birdshot gun is all about making the stock fit the shooter. A custom shotgun stock will show a little cast (bent in relation to it's long axis) so the bead falls in line with the shooters eye when the gun is shouldered. You can alter the butt plate cut angle to correct elevation issues also. I know you don't want this on a tac shotgun but take a look at the adjustable butts they put on skeet and clay guns... you will see the reason why these work in short order.


On a tactical slug gun... I'd look in to doing whatever it takes to make the sights work correctly. A lot of ghost rings, etc need a little file work or shim work so they fit right. If they "lean" a little to the left or right you will see some sighting error. I've had that same issue installing tang sights on lever and single shot rifles also... the sight base needs a little tweaking to square things up.



If I fixed it with the sights I would have to mount the front sight on the bottom of the barrel or the rear sight about 1" off the rib. I guess I could shoot it from my hip. That might be about the same offset I need.

I see what you are saying about the multi directional stock adjustment setups that you see on the trap range. I just don't think its possible with synthetic stock and me still being able to look straight down the barrel.

#7 Jeff

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Posted 02 November 2010 - 10:53 AM

Jesse... I dont know how much your experimenting with your loads... 100 yards is ambitious with any factory slug load.

Have you shot this gun and load from the bench? if every thing shoots low... and you have zeroed-adjusted the sights correctly I'd think you are just going to learn what the correct hold is for that gun-ammo-distance and go for it.

I shot slugs in a shotgun only area for a long time. Once you figure out the shotgun... 3 of 5 at 75 yards on a paper plate, 75 yards is doable. For me and a gaggle of Uncles and Cousins... with a bunch of "bird guns" and brass beads.
I'd exhaust all the possible variables before I bent a barrel...

Of course... you may have a *bent* barrel that needs truing....
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#8 Chambers

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Posted 02 November 2010 - 11:12 AM

Jeff, I've shot this gun with 2 different barrels and two different types of slugs off a bench and they all drop low left.

3-gun is an ambitious sport! :) And it really needs to have a bead/FO front sight.

#9 mike cyrwus

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Posted 02 November 2010 - 11:35 AM

Hi Jeff,
Yeah, its a wonky barrel. Jesse gets a bug up his butt to try and make this barrel work every 2-3 months or so.
We're basically using these as big bore rifles when we shoot slugs out of them.

#10 Jeff

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Posted 02 November 2010 - 11:36 AM

Jeff, I've shot this gun with 2 different barrels and two different types of slugs off a bench and they all drop low left.

3-gun is an ambitious sport! :) And it really needs to have a bead/FO front sight.


That's all I got :unsure: Maybe you guys should only shoot that shotgun in gravity reduced areas? :)
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#11 Wall

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Posted 02 November 2010 - 11:40 AM

Hi Jeff,
Yeah, its a wonky barrel. Jesse gets a bug up his butt to try and make this barrel work every 2-3 months or so.
We're basically using these as big bore rifles when we shoot slugs out of them.


Mike,
If you tweak/bend the barrel like he was asking about, won't that move the front sight?
Wouldn't this just make his problem worse?
It sounds like something is funky with the rib (if the sight's mounted on a rib).
Are there any adjustable rear sights that could be used to change his point of aim to match his point of impact?

#12 Jeff

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Posted 02 November 2010 - 11:44 AM

I know you guys like to play... but in the real world (back in the dark ages) the Winchester 94 made a dandy "patrol rifle" for those of us blessed with "rural" patrol areas.

If you guys want to get really ambitious... casting your own slugs and reloading may help. Tweaking projectile weight has been know to flatten trajectory a bit.
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#13 Jesse Tischauser

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Posted 19 November 2010 - 11:45 AM

If you guys want to get really ambitious...


I don't!!!
:D

#14 KurtM

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Posted 25 January 2011 - 07:01 PM

Well I agree about the 94 being a great patrol rifle, in my opinion much better than an AR, but we disagree on slugs to a great degree! It isn't uncomon for a quality barrel with a good rear sight to attain 3-5" groups at 100 yards. Many a well set up 3-gun shotgun will hit a 10" plate at 100 yards with boring regularity. The main thing here is a rear sight. At these ranges you can't rely on just a bead!

Note about barrel bending.....the sight is only an index and where the projectile goes on discharge can be wildly different than point of aim. Bending the barrel "forces" the impact to the front sight. Bending WON'T make the matter worse. Taran Butler haas a great barrel bending jig and Jesse should send him his barrel and get it all "straightend out" KurtM

#15 viloria

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Posted 05 February 2011 - 08:06 PM

Try taking a 20 ga and a 12 ga empty shells and knock out the primers.
Cut off the plastic down about halfway and stick the 20 in the muzzle and the 12 in the chamber.
Hold it up to the light and look thru the hole.
If you see perfectly round rings of reflection in the barrel. The barrel is straight.
If the rings are off center the barrel is bent, and the thick and thin sides of the ring
will tell what direction its bent.
You can then put it in a press and bend it until the rings are concentrict
or as P.O.Ackley used to do it.
Whack it on a piece of soft barked tree stump he kept in the back of his shop.

#16 dennishoddy

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Posted 14 February 2011 - 07:27 PM

JJ Perodeau at Champlin arms can help with bending a barrel.
http://www.champlinarms.com/
Go to the services tab on top. Bending a barrel is around $200.

#17 Jesse Tischauser

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Posted 25 February 2011 - 11:29 AM

JJ Perodeau at Champlin arms can help with bending a barrel.
http://www.champlinarms.com/
Go to the services tab on top. Bending a barrel is around $200.



Nice thanks!

#18 assaulter

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Posted 05 December 2012 - 10:43 AM

Did you ever fix that barrel Jesse?

#19 Jesse Tischauser

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Posted 05 December 2012 - 11:06 AM

Did you ever fix that barrel Jesse?


I hit almost everything I aimed at last year. I need to give it a little bit more bend as its still 2-3" off but its close enough for everything at normal matches. Rocky Mountains slug shots aren't normal so I struggled there somewhat but I think everyone else did too.

#20 assaulter

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Posted 05 December 2012 - 04:21 PM

Did they have any slugs on the Pro series?




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