Pellet Twirling problem
Hello guys,
I’ve noticed that the pellet is twirling through my scope.
I’m using jsb 18.1 grains at 890ft/s.
I tried to slow down the muzzle velocity but nothing changed.
Any suggestion please?
Wish you all a merry Christmas
All Replies
:hoot:
Actually not! Copper is a very soft metal compared to the hardened steel used in gun barrels. Powder burning shooters have used copper brushes for lead removal for a very long time. Given today’s technology, lead removal can be chemically accomplished with a soft tip fiber brush.
However, if the dealer is willing to work with you…that’s the wise way to go. Good luck!
Hoot:
Thank you guys for your help! Since it’s under warranty I’ll take it back to the dealer.
If it’s easy for you, load a pellet manually. Take the shroud off and remove the barrel from the gun. Push the pellet through the barrel and check for deformity. Barrel is easier to inspect when removed. Pushing the pellet back out of breach end sometimes damages the pellet skirt as it passes the transfer hole and the breach o-ring.
get the shroud off and inspect internally with strong light
you can do the same on the barrel, if you stick a white paper there where the magazine goes, you can look down the barrel (obviously with no pellet in) strong light from the side may help you to see if there is anything to see. try to visually inspect internally the shroud, the barrel, the transferport area and the pellet probe.
I already contacted Evgeny. We’re trying to find out what is the problem.
Regarding the copper wire brush, isn’t it very offensive to the barrel?
Thank
If the gun is new and has always spirled pellets, I’d contact Evgeny about that. He will likely replace the barrel or fix the gun to your satisfaction.
:hoot:
Try cleaning the barrel and loading port with a copper wire cleaning brush. There is likely a burr or spur of metal sticking up in the transfer port hole in the barrel, in the loading port, or even a projection from where the rifling starts.
A wire brush might be able to break off the offending piece and solve your problem.
Hoot:
If you are getting that without the magazine, then there is a burr inside the barrel or your o-ring is mangled enough to push the pellet off course. Inspect with a small piece of mirror. You should see the problem readily.
Thanks gukyo for the reply. I did my test inserting the pellets manually in the barrel without using the magazine, so i don’t think it’s a magazine issue. Also installing the magazine is pretty smooth.
I’d check the following.
Use a small piece of mirror to look inside the barrel from the breach. Is there anything protruding into the barrel? Probably not, but check this to rule out something in the barrel.
Next check that your pellet probe (with magazine out) is entering the barrel centered. I’m having trouble envisioning this as the culprit because only a small misalignment is possible unless the probe tip or probe body are bent. The entry of the wide portion of the probe into the barrel should be zero resistance until it meeds the o-ring inside the barrel.
Most likely, your magazine isn’t aligning with the barrel and the gouge is from one of the riflings scraping the pellet as it is being presented off center into the barrel.
I think something is making your marines not line up correctly. On the 22, the magazine should fall into position with zero force until the little round metal bearing engages the magazine. That metal bearing mates into the magazine ridge. Something is letting your magazine swing in too far or stopping it from swinging in far enough. Is the bearing missing? Is it sticking too far out?
The top of the magazine and the top of the breach block are perfectly flat with each other on my 22.
Another possible problem is the spring tension inside the magazine being too light or the magazine axis screws being too tight. Either of those will prevent proper spinning of the next pellet into position.
I’m betting it’s the magazine being out of position in the breach.
I just did an experiment. I feel that the cocking is not smooth as if the pellet is obstructed. I inserted a pellet and cocked the gun. Then i decock without shooting the pellet and i insert a stick used to clean barrels from the front side of the barrel to remove the inserted pellet. As you can see from the pictures attached, the pellet shows a deformation of the skirt and head.
It’s a .22 cal.
Any thoughts on how to resolve?
Thank you
Is this a 25 gauge?
The dent is seen on the skirt and head also. I don’t have a problem with the magazine but I can feel resistance when loading the pellet
The shape of the dent on the skirt matches that of the pellet probe tip. Is there a chance that something is impeding your magazine from rotating freely?
The “no rot” slider isn’t partially engaged, right? (I doubt this one since you would also have trouble taking out magazine)
Screw of magazine axis isn’t so tight that the magazine doesn’t rotate freely.
Barrel isn’t so far back into the breach that the magazine is difficult to snap into position. When properly positioned, the barrel does not impact against the magazine. The magazine only sees resistance from the little ball bearing as it snaps into position. If you are needing to push hard on the magazine to mount it, the barrel is mounted too far into the breach.
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Thanks Hoot!