sudden accuracy problem
Having a major accuracy problem that showed up overnight.
Bought a SS and Bushnell Elite 4200 a couple weeks ago. Sighted in at 25 yards. It’s been shooting spot on = tight groups, pellets go where the cross hairs are aimed. When shooting under or over 25yds, it’s still been spot on using the mil dots. Been using Jumbo Exacts and Heavy Kokiaks. Every time I’ve used it, it’s been 100% accurate, right out of the storage case including using it two days ago.
Took it out of the case today and it suddenly shoots 2 feet right at 25yds, 6 inches right at 10yds. The scope screws are tight. I tried refilling the tank to exactly 3000. Am using the Air Hog Carbon tank for refilling and, just in case the dial is off and the tank was overfilled, I shot 20-30 rounds to get some air out of the tank. All of those shots were 2 feet right at 25 yds, 6 inches right at 10yds.
The barrel looks clean and okay. Everything feels tight, not loose. I checked the top hat. I didn’t change or adjust anything on it in the two days since last used. Any ideas what would cause a sudden, major accuracy problem?
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Viewing 10 replies - 1 through 10 (of 10 total)
I was thinking the same thing Riff!
any Kids at the house?
Mike
The only time I ever had POI shift to that degree, the gun had fallen off the shooting rest and knocked the scope. I think it shifted the mounts as my shots were completely missing my target board at 50 yards.
I just loosened the mounts and rings to alleviate any bind that may have occured, then remounted the scope.
Are your groups still good after the POI change? If so, its probably your mounts shifted. If you have adjustable mounts, its likely they will move if you even mildly bump the scope.
If the groups went to shit, its probably the shroud.
A small rap/bump/anything on the shroud can put it a few thou out of alignment, and sometimes thats all it takes.
–edit— Just remembered another thing that caused me grief once. Once a rifle was messed with by somebody in my hunting party. Groups were way off point of aim, and only months later did the guy confess to turning his scope adjustment all the way up and left.
Do you have any kids, teens, or otherwise mischevious people in your house. If so, did they have access to the gun?
Just a thought.
You are clipping.
Take the shroud off and shoot it. It will be apparent very quickly.
Agree – it’s crazy off.
It came with shroud on it. Top hat is tight, so are barrel grub screws. Didn’t drop it. Everything seems tight and looks okay.
Misses doesn’t belong to PITA, but she doesn’t like it when I start shooting woodchucks in the a*s. I’ll do some more test’n and report back.
Thanks for the suggestions.
Check for bent scope?. This happened to me when my Condor fell over from an upright position.
Ya know maybe PITA got to it 😯 😯
Or does the Misses belong to PITA ?
Hope ya figure it out, sounds way too messed up, but then again maybe a simple solution, let’s hear more
SAW
top hat loose? two feet is real crazy soundin……check the barrel grub screws—-hope you didnt drop the gun???—hope you get it all together…
test
did ya add a shroud ?
Could be clipping
SAW
Viewing 10 replies - 1 through 10 (of 10 total)
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Okay, since this is my first experience with pellet rifles, you’ll have to excuse a rookie mistake.
Wasn’t the shroud, wasn’t mischievous kids, turns out it was a defective scope mount. After I posted the symptoms earlier, I did another examination and discovered the windage hardware on one of the mounts was defective. The scope had moved, yet was holding steady and didn’t feel loose.
Replaced the mounts, sighted in, and its working great again. Thanks again for help with diagnosing.