P.O.I. dropped 8 mildots down and shifted left to right!

[AirGoon]

I mounted a new Sightron scope on my new Impact M3 tonight. After about a hundred shots the point of impact suddenly dropped 7 mildots and shifted left and right each time I fired. My elevation turret was maxed all the way up. I checked the rings and everything was correctly mounted and tightly fastened. Everything looked right with the scope and I began to think that the erector tube must be free of the turrets. In other words; broken beyond repair. I was upset to say the least and ran through some choice vocabulary before a friend calmed me down over the phone. I shot the gun more and noticed that the elevation remained fairly constant at about 7 mildots down, but windage p.o.i. was hitting randomly right and left. What would do that? Loose barrel? As I went to check the barrel, I noticed the air stripper on the end of the barrel was angled down slightly. It was loose and you guesses it, that was the culprit. I screwed it back on, re-zeroed the scope, and presto, all fixed, my temper included. Any of you have a similar dumb airgun problem story to share?

 

[Scotty1]

Hey, at least you didn’t take the gun apart.

 

[Larryt]

My goofy moment(actually a bit longer than a moment ):

Took my scope of Maverick my loosening pic mounts from rail, i.e. left mounts in position as clamped to scope. Finished my maintenance, which included removing complete barrel, refitted scope, starting shooting......

Could not get on paper at 40m, my target frame size is about 18 x 28 inches, was shooting way over top of entire target.

Stripped barrel out, thinking maybe I did not index it correctly in slot, found nothing amiss. Removed moderator. Checked chrony speeds. Checked probe was pushing pellet in correctly(getting desperate for a solution), checked slugs, scope had no movement was firmly attached. All were good.

Started scratching my head, this cannot be so, nothing was making sense to me!!

Stood back, deep in thought, what could this be...... envisaged having to send rifle to FX to try solve.

While contemplating situation and grieving for loss of a good shooting day, I happened to glance again at rifle and in particular the scope.

When attaching the mounts back onto pic rail, I had misaligned the rear scope mount and the clamp part of pic mount had not gone into the groove as meant to have, but had instead caught on lip of rail and was tightened to the lip rather than in the groove. Scope rear end was raised and off at an angle.

Smacked myself a few times on the head, loosened scope and mounts, refitted....... bang on target.

Live and learn!!

 

[markhooper]

umarex notos seems to come with a loose sloppy shroud.. it got worse and I thought maybe I got a defect.. but then I went to pull the barrel to see how it was all together and see what might be done to shorten the pistol to pistol length and well I took out the screw for the shroud and found out that the barrel set screw was very loose.. put back together and it's been tight since.
Mark

 

[markhooper]

another time I still have not solved, I wanted to push my American tactical liberty nova 22 to long distance.. so I started at 100 yards and good tight group, went to 150 and had to compensate a little more for drop, still good tight group.. went to 200 yards and couldn't put a shot in the 24" target.. high, low, right and left but not a single one on target.. so I went back to 150 and good 160 good but 170 and nothing on the target.. now I shoot my 22 rimfire farther than that and I can easily print good group..I was actually trying to see what the drop at different yards were to see about trying to push the air rifle out to the same long distance I was doing with rimfire and I didn't get close..I have no clue what happened.. just wondering if it's the maximum range? or pellet tumbling? didn't matter if it was jsb 18 or crossman premier round noze..
id welcome any suggestions as to why it's that way.. I ruled out the wind and it's not a scope since both rifles are open sights.. just surprised that 10 yards made so much change.
Mark

 

[Ranchibi]

You're not the only one.....so don't feel bad!