Using a Tasco 3-9 x 40 scope on an 8 x 57 Mauser, the shots don't land anywhere near the target and never in the same place - that is not within a foot radius at only 25 yards. I installed better mounts, but that didn't help at all. Scope has hardly been used.
Mount the rifle with the scope and make a mark on the backstop right where the crosshairs are pointed at
Shoot several times, several shots will surley jolt the scope some.
If the crosshairs have moved much past your mark then this would indicate the scope is the issue.
If the crosshairs are still pretty well centered to the mark, its not the scope.
If at the same time your grouping looks terrible, and your scope still is on the mark, and the gun is WELL mounted, then the issue is with the accuracy of the rifle. Make sure the rifle is mounted good for this to ba accurate . Hope this helps
A rookie expert who has answered 20 questions on their first day.
Re: point of impact changes with every shot
If you use silencer, pit it off and try several shots because sometimes silencer is not well centered so the pellet hit the silencer. the most important in air rifle is barrel, try to shot at the sky with a good pellet and see the pellet trajectory trough the scope, if the pellet runs wobbling, spiraling etc there is something wrong with the barrel, check the crown. hope solve your problem
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Mount scope on rifle with the eye relief you are happy with
set up a target at 10 yards and fire 5 rounds of until you are grouping tightly ( no fliers ) you may want to use quite a few targets once you are happy with the grouping remove the adjustment covers on the scope
the top one is for moving the point of impact up or down
the side one is for left or right
depending on the point of impact you need to move it up or down to meet the cross hare once you get the point of impact on the same hight line as the aim point you can move the side adjuster to move the poi to meet the aim point
then move the target out to 20 yards and repeat the above again
then move the target out to a distance that you can put 90% of your shots inside 40mm or better and that is your max range for live animals
Start out at 25 yards. the scope is I believe used 1/4 inch clicks. This is for 100 yards so 16 clicks will equal 1 inch at 25 yards. Fire three shoots from a solid rest. Measure the distance left or right and up or down from the desired point of impact. and move the setting in the desired direction. ie uo is moving the point of impact up from where it is. and left or right is the same. Next fire at the desired distance and move point of impact to where you want it at that distance. If the scope is wandering all over the target make sure the scope is not moving in the mounts. If it persist in changing point of impact send it back to tasco for a replacement as it has a loose recticle. Better yet I can recomend Leupold or Burris as a better alternative if they are in your budget. Not quite a S&B or Ziess but **** close for a lot less $$$$$
To raise the point of impact, turn the elevation screw counterclockwise. To shift left, turn windage screw clockwise. If you raise the horizontal cross hair you will lower the point of impact of the bullet. If you move the vertical cross hair to the right the shot placement will go to the left. Make small adjustments tap the scope with a screwdriver handle to give it a shock, not to hard to help move the cross hairs and try to bore sight first. Hope this helps Fix ya up.
Is the country of origin China.. Sounds like the reticle is stuck,, like from being dropped maybe in shipping. OK, Without any adjustments made shoot it one time, if you tap on the side of the scope, not the top of the turrets with a plastic/rubber hammer and point of impact changes (jumps) its faulty.. you cant fix it.
To raise the point of impact, turn the elevation screw counterclockwise. To
shift left, turn windage screw clockwise. If you raise the horizontal cross hair you will lower the point of impact of the bullet. If you move the vertical cross hair to the right the shot placement will go to the left. Thats just the way it works. Point your right index finger at a spot on the wall, and sight down your finger like looking at sights, then take your left index finger and pretend it is a horizontal cross hair above your shooting finger, then raise your left finger a set amount above the right, then move your hands back to the shooting position not changing the distance in between, using your left finger now as the sight. You will see your shooting finger is now pointing lower than before. This is now the new point of impact, lower not higher. Hope this is clear as mud and helps Fix Ya up.
This does sound like it needs a bit of Loctite. But, You need to check this first, Is the scope being put in a bind due to heat from shooting. So, shoot for your group but wait say 7 to 8 minutes in between each shot. If in this case the gun stays on target every time, she is just getting hot and the heat is causing expansion in the mount / receiver area. If she jumps around during you timed shooting, then Loctite her in place, and Retry. If your sighting in slugs for deer hunting, your shots will always be from a cold gun, she needs to be on target cold not hot.
Theoretically, point of impact should not change if you change the xoom.In practice it sometimes does, but rarely to a noticable extent. 25 yards is about right for most pellet guns.BBs ane well known for curving and hooking, less so with pellets.Try different brands of pellets to see which ones work best in your gun.Lube the bore with an oily patch before shooting for best results.Enjoy
2) Use a bean bag or rifle mount and make sure that your rifle doesnt move much from its original position throughout this process.
3) Aim with the scope and shoot at a large backstop which will allow you to see where your shot lands, where ever that may be, it doesnt matter at this point. Again, make sure your rifle doesnt move much when firing.
4) With the rifle in the same position, look through the scope and adjust the crosshairs over to where your shot landed.
5) The scope now sighted in with the rifle. Minimal adjustment may still be required but at least your well within the ball park.