Does anyone know what might be going on here ?

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fishinwrench

fishinwrench

Member
Nov 25, 2017
589
16
mo
The last 2 times this week when I took the rifle out back to do some target shooting and plinking the first 15-20 shots were 2" low and 2" left. Then miraculously with no adjustments or changes in my hold they started pounding the bullseye.

What is happening? Does the gun need to "warm up" or what? And how can I prevent this?

I'm thinking if just I grabbed the gun tomorrow and went to shoot a few squirrels without doing some preliminary shooting first then I'd probably miss. This is unacceptable and driving me nuts.
 
I have been leaning it in a corner, sure enough. I stand it up pretty vertical though, not much weight being put on the muzzle at all.
I'm in Missouri and it's been mild (nice) weather up until a few days ago. Experiencing the tail end of a cold front now (hi 40's/lo 20's).

Sighted in, and do most of my target shooting at 25yds. 
Shooting Crosman Prem HP's (14.3gr.) and JSB Jumbo heavy's (18.1gr.)
 
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I guess it was just LEFT the other day. But today it was Low and Left.

You can see the "patches" over my first round from the other day. About 15 rounds later it ZEROs again. And it will stay zeroed as long as I keep shooting. But take it inside for the night and I guarantee tommorow that MFer will shoot the first 10+ round either Left...or Low and Left.
 
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"fishinwrench"What can I do to eliminate the scope as the culprit ?



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Do you have another scope you can put on it to eliminate that aspect. I shoot Field Target and I know how much weather can affect the point of impact. Usually, its a gradual change as a scope and rifle "warm up" but if your scope is not up to the task it may be the problem. 

On another note, I am sure you aren't mixing pellets but I thought I would ask to clarify and eliminate that aspect. I'm sure you know that different types/weights of pellets have different points of impact (elevation and left or right) from the same barrel. 

Gary in FL
 
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"buckyusn"Can you try storing it flat? What about storing it in the garage overnight to see if that changes anything?
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Worth a try.

Barrel was cleaned about 300 rounds ago (and it wasn't that dirty) so I don't think a dirty barrel is to blame. Hate to clean it now because that in itself is just gonna make my first few rounds go crazy, and I really want to get to the bottom of this.
 
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"GLPalinkas"
"fishinwrench"What can I do to eliminate the scope as the culprit ?



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Do you have another scope you can put on it to eliminate that aspect. I shoot Field Target and I know how much weather can affect the point of impact. Usually, its a gradual change as a scope and rifle "warm up" but if your scope is not up to the task it may be the problem. 

On another note, I am sure you aren't mixing pellets but I thought I would ask to clarify and eliminate that aspect. I'm sure you know that different types/weights of pellets have different points of impact (elevation and left or right) from the same barrel. 

Gary in FL
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I'd have to pull one off another rifle...and I'd almost rather buy a new one than to go through all of that.

No pellet mixing going on. I may sight in with the JSB's soon though because they have a bit more whallop and I plan to kill some squirrels as soon as deer season is over with. Only shooting the Crosman's because their cheap, shoot good, and I can buy them local.

If I can't pin it down to something else I think I'll order a better scope (Hawke) but I'll have to be real sneaky about that or my bride will go spend 500 bucks on shoes just to get even.
 
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"fishinwrench"
If I can't pin it down to something else I think I'll order a better scope (Hawke) but I'll have to be real sneaky about that or my bride will go spend 500 bucks on shoes just to get even.
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I don't think I'd go to the expense of putting a high-end Hawke on that rifle. Don't get me wrong, I love my Hawke scopes but UTG Bugbusters work just fine on most of my less expensive rigs for squirrels. 

UTG makes a 3-9 and a 3-12 both of which will limit your wife's shoe reprisal to around $100. LOL

Although, I see on the Pyramyd site that Hawke has a few less expensive scopes also. I just never used them because I love my Bugbusters. They focus down to about ten feet which makes a legitimate scope for sniping wasps, weeds, etc. 

Links at Pyramyd Air.... https://www.pyramydair.com/search-results-ext?Ntt=bugbuster&sid=1375A617A415&N=0&Ntk=primary&q=bugbuster&cx=002970863286801882398:jlcminxfwdw&cof=FORID:11;NB:1&saSearch

 
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First thing I would do is shoot it over a chrono if you can....see if the fps is the same from when it is wonky to where is calms down.

Are the shots going 2" this way and that way....are they in a nice group?....or are they all over the place.

One of my gamo rifles an old silent stalker does this, and for some reason the first 10 or so shots are around 200 fps slower then the others.....I just noticed it not that it has gotten cooler as well (I am also in MO) I have also noticed what could almost be called dieseling with the gun at first...then it goes away, the speed gets FASTER, and the shots start going where I want them to.

I keep my gun in the basement so it is cool down there, so I don't think going from warm to cool, not cold is it....I don't really know, but I would love to see what the fps numbers are between the gun shooting stupid and shooting well.
 
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