accuracy problem wi...
 

accuracy problem with Benjamin 312  

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melohn
(@melohn)
Joined: 5 months ago
Posts: 12
April 22, 2019 15:22  

Has been resealed and all necessary parts replaced by Rick Willnecker  at P.P.

Using a variety of high-end pellets,   Can't get any group smaller then 7"  and I'm using a scope.

Without the scope,  same thing.  Does anyone have any suggestions?    Thanks,  Jim

 

 


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Johnny366
(@johnny366)
Joined: 1 year ago
Posts: 150
April 23, 2019 01:52  

I would make sure all the solder points are tight especially the one at the front of the barrel/tube where the front sight is. Then I would look carefully at the rifling and push a patch thru from the rear after removing the bolt to make sure there is consistent pressure on the patch meaning there are no loose places in the barrel. I use a variety of pellets in several that I own and they are very accurate. I use the Crosman premiers, JSB's, etc. Lastly I would try some RWS super domes if your barrel is worn because they seem to be a little oversized.


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gordonid
(@gordonid)
Joined: 1 year ago
Posts: 8
April 23, 2019 10:31  

Scoping an old Benjamin requires some method of attaching it to the gun and I see it can be done but I would question the mounting method first then the scope itself. I suggest trying it without the scope to rule that out.

I have trashed a cheaper scope on a modified 1377 and the only thing I could blame was the arm slapping the compression tube.

Other than that the bore size, condition, and soldering of the barrel (as mentioned) is in question.

Neat old guns but groups like that on a good one is not expected.


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RockDoc65
(@rockdoc65)
Joined: 1 year ago
Posts: 47
April 23, 2019 13:40  

Since your post implies that it shot fine before the rebuild,

and it shoots equally bad with scope and open sights,

Then...

Is it possible that the rebuild process caused some damage or abnormality in the chamber/throat/transfer port area? Any abnormality in that area (or even the crown for that matter) can damage the pellet as it passes and damage to the pellet can cause accuracy to decrease.


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doninva
(@doninva)
Joined: 1 year ago
Posts: 104
April 23, 2019 15:53  

I would send it back to your "tuner", sounds like he needs to have a redo.


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Hotair
(@hotair)
Joined: 8 months ago
Posts: 549
April 23, 2019 16:11  

Big money question is- did it shoot accurately before it went in for a reseal or did you buy it used in "as-is" condition not knowing if their was an accuracy issue?

HA


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melohn
(@melohn)
Joined: 5 months ago
Posts: 12
April 24, 2019 07:53  

It did not shoot accurately before tuning as it took 3 hammer strikes to empty the valve

the scope mount is the one sold by Tim McMurray 

It will shoot one in the 10 ring  then one  left low then one right high and so on


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Hotair
(@hotair)
Joined: 8 months ago
Posts: 549
April 24, 2019 08:59  

 

HA


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