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Blackbirdhunter · New Member

I have a Beeman Sportsman Series Model 1100 .177 cal. I bought it new about a year ago. No matter what I do it shoots left 4-5 inches at 15 feet. The scope does and the iron sights. I put a shim by the action and inside the sope ring. I have the scope adjusted all the way rite and still shoots way left. Anyone have any help or ideas on how I might get this shooting straight?

Rogerflat · Silver Status Member

Amigo · Veteran Member

BBH:

An 18" barrel would have a 1/2" muzzle to breach miss-alignment if that alone is the problem and readily apparent as Roger mentioned.

Have you noticed any crescent shaped lead fragments at the breech? If not,
have you done the Q-Tip test at the muzzle to check for bore (land & groove) burrs?
Also, have you checked to see if the muzzle crown is square with the centerline of the barrel?

A muzzle only .005" out of square across a .177 bore calculates out to 5" in 177", just 3" shy of 15'.

I'm new here myself and hope I can be helpful. Regards,

Amigo

AirGunEric · Site Admin

The Beeman 1xxx series rifles are their Chinese-made lower end product. That being the case I would check the barrel crown first, as Amigo suggested. If it turns out it's not centered, you can repair it here: http://www.airgunhome.com/agforum/viewtopic.php?t=15

kanyon · Silver Status Member

Hi..I have a chinese gun that i could not get the windage adjustment over on. I turned one of the scope rings around and that bought it with in the scopes adjustment range.
But 5" at 15' got to have a bent barrell can't you put a str8 edge along the barrell and also on the pivit block and check the gap is costant all the way down the barrell.
I will post a pic of one of my B11 barrells brand new stra8 out of the box
yer have to see it to beleave it

kanyon · Silver Status Member

Hi..If your barrel is bent it would need a bend simlar to this as this shot
100/130mm high at around 10m

cw · Banned

Wow! That is amazing. What do their QC guys do all day.

Juster · New Member

Do you do better you sight along the barrel, shotgun style?

broommaster2000 · Moderator

kanyon · Silver Status Member

LOL...Yer its a bit grim when you aim at a bunny and knock a
sparrow out of the sky instead.
The barrel is str8 its the breach block that is not bored true
so I have to bend the barrel to make it str8 "shoot str8 any way"

broommaster2000 · Moderator

I read str8 as "stracht".

under500fps · Veteran Member

The tool for bending a barrel.
http://www.gatewaytoairguns.com/library/Charlies%20Barrel%20Tool.pdf

kanyon · Silver Status Member

Hi..That little wood benders quite qute.
I was thinking more along the lines of a couple
of vee blocks in the bed of a 120ton press break "jokeing"
Have a small broching press for keyways will do it just nice.
Because it is going to be bent after I straighten it I was thinking of
boreing the breach end to take Gamo shot shells. Should make a good Quail gun

AirGunEric · Site Admin