scope question

[birdmove]

    I have what, 8 air rifles, I believe. I like to use a scope. Except on my Crosman Phantom, which, I believe damaged a 2x7 AO scope. But, my question is about AO/adjustable opjective scopes. Those wit and without AO. I've been hoping to get my 1322 up and useable for night ratting. I've been using my Crosman Model 664, which has that 2x7 AO scope mentioned above. Took two rats last night with the 664. I my Centerpoint four power non-AO scope off another gun and put in on my 1322 with steel breech and buttstock. I only have three pellets to try in the 1322, as 22 caliber pellets are very hard to find here. Even .177 can be tough here. I am sighting in at 21 feet/7 yards, as that's the distance from my lawn chair, to the chicken feeder where I am shooting the rats. The 1322 and the Centerpoint scope combo, are giving me too many fliers. That's uncalled fliers. It'll stack 2 shots right on top of each other, then, a shot goes an inch to the left, seemingly with the same hold/sight alignment, trigger squeeze etc. Could this be caused by a parallax problem with this scope? I don't get this with the 664. Or, a flier with that gun may be 3/8" out, but not an inch or more. The Centerpoint may well be set up for 25 yards or more use. I have a couple of other AO scopes mounted on guns.

    I should also say that I'm 61 with bad eyes. With the Centerpoint, I have been able to get both crosshairs pretty sharp in focus, but the target is not quite in good focus.

[north country gal]

It could be, yes, especially up that close. Easy enough to check. Set the gun in a rest, put the crosshairs on the target and make sure the gun doesn't move. Then, move your head right to left, left to right. If the crosshairs mover off target as you head moves, you have parallax.

[HYspd]

And to adjust the non adjustable scope look in the end that faces you target......see the ring around the edge of the lense?.....turning that ring will change the parallax setting....I believe the last scope I adjusted for short range wanted to be turned counter clockwise to correct the parallax for short range sighting...

[birdmove]

   I remembered seeing a youtube video about how some scopes could be adjusted by removing the front ring, and screwing the lens in and out. I found the video here:

http://www.airgunweb.com/take-aim-with-airgunweb/take-aim-episode-18-adjusting-parallax-on-a-budget-scope/

    Took a look at my Centerpoint 4 power scope, and, sure enough, I was able to remove the front ring around the lens, and screw it (forgot which way I went) until the bullseye on my target, that I had set at 7 yards, was in focus. Put in back together, and took some shots.  Still had some of what I consider to be fliers maybe 1/2"-7/8" with the Crosman Premier hollw points and pointed pellets. But, the darn Gamo Match wadcutters grouped very well, again, using 6 pumps. Adjusted the scope for zero again, and I was planning to go rat hunting tonight. But, right now (8:22 pm Hawaii time it's pouring down rain!!

[David.Soliman]

   I remembered seeing a youtube video about how some scopes could be adjusted by removing the front ring, and screwing the lens in and out. I found the video here:

http://www.airgunweb.com/take-aim-with-airgunweb/take-aim-episode-18-adjusting-parallax-on-a-budget-scope/

    Took a look at my Centerpoint 4 power scope, and, sure enough, I was able to remove the front ring around the lens, and screw it (forgot which way I went) until the bullseye on my target, that I had set at 7 yards, was in focus. Put in back together, and took some shots.  Still had some of what I consider to be fliers maybe 1/2"-7/8" with the Crosman Premier hollw points and pointed pellets. But, the darn Gamo Match wadcutters grouped very well, again, using 6 pumps. Adjusted the scope for zero again, and I was planning to go rat hunting tonight. But, right now (8:22 pm Hawaii time it's pouring down rain!!

+1
Almost all scopes are adjustable for parallax by screwing the front lens in or out, some scopes have, other than the lens retaining ring, a stiff conical spring pushing on the objective lens. You may need to push the objective lens down with your finger to ease the tension on the threads so that you can screw the retaining ring.

[Bud in PA]

If you remove the front ring and move the lens, won't that allow the nitrogen to leak out.  This supposedly will cause the scope to fog up in cold weather. I have never had a scope fog up on me in over 50 years of using them.

[birdmove]

If you remove the front ring and move the lens, won't that allow the nitrogen to leak out.  This supposedly will cause the scope to fog up in cold weather. I have never had a scope fog up on me in over 50 years of using them.

    If you watch the video I mention above, Rick Eutsler does warn that, if you do this, it may ruin your scope. I suppose he is concerned with scopes that are sealed and nitrogen filled in that area. Apparently, my Centerpoint scope is not sealed in the front. There was no release of gas when I removed the front ring. I do have to fine tune the rear adjustment a bit, as one crosshair appears in sharper focus than the other. However, that didn't prevent me from deleting one more rat from the world about 10:00 last night. A head shot with a Gamo Match wadcutter at 7 yards downed him like being hit with an anvil.