Gamo Whisper busting my scopes

[chortdraw]

I hope it works for you. I finally put the 440 wood stock on my Whisper. Tomorrow will see if anything has changed or if it has effected accuracy and recoil. Still has a noisy spring.

[doc1310]

Yes the gas ram does pack a punch! I'm sure that you will enjoy it more now that Gene tuned it. Since your still worried about your scopes, I'm really hopefull that the Hawk scope will solve your problem. One last thing to consider. Is it possible that your doing something wrong when you mount the scope? Do you still have the Gamo scope base on the rifles dove tail? Are you mounting a one piece mount or two? There are instructions in the library here. You might want to go over them before you mount the scope. Just something to think about. Good luck. Lets us know how you make out.

[Bullfrog31581]

I'm using a one-piece mount. I am also using Gamo's scope base. I'm not getting any slippage when I shoot, but I've had to replace the scope base one because the hole where the vertical screw goes got too banged up.

The reason I'm pretty confident that the problem is the recoil itself is because it only takes a few shots for the screw for the rear sight to be worked loose from the gun. Continued shooting will work loose the screws that hold the gun to the stock. I can only imagine how much energy must be shooting through the gun to do that. The .177 doesn't work anything loose when it is shot.

The silicon did seem to dampen the felt recoil considerably as well as quiet the gun. However, the back site worked loose after a few shots. My hope now is that the Hawk scope can take the punishment.

[airiscool]

Installing a 1/4 inch stop pin in the Acushot one-piece mount seems to be holding my Whisper's scope in place very well.

Also....
After reading Gene's suggestion of using heavier pellets with an air spring , I tried shooting preditors again.

Before I installed the air venturi the gun did best with Super Domes, not so well with the Preditors.

Now with the air venturi it's switched. It shoots the Preditors better, and the Super Domes not as well as it did before. The Preditors are only 1.8  grains heavier, but it has made a noticable differance.

Next pellet order, I'll try some even heavier pellets and see what happens.

Paul.

[Bullfrog31581]

Well.... I'm getting very frustrated now. My .22 is smoking severely again with every shot and its throwing pellets with elevation rises and falls with as much as 4 inches. I've put somewhere between 100-150 rounds through it since I've had it back. For the first day it didn't smoke and was very accurate,. Now its behaving as it did before. The .177, on the other hand, shoots like a dream. Its giving me .5 inch groups at almost 30 yards.

I'm about ready to chuck the .22 in the garbage. I've spent a lot of time and money on this gun; over $300 for the gun + air ram, around $150 on scopes (those are the ones I couldn't return), and $150 on a tune. I could have bought an Airforce PCP or a Marauder for that much. The .177, on the other hand, was  $250 for the gun and $179 for the tune, no small amount, but darn it its a good shooting gun. I regret buying the air-ram. As a newcomer to airguns, I feel burned by a bad purchase. I recommend staying away from the air-ram if you want a Whisper. The spring with a good tune appears to be the superior gun in my experience.

[airiscool]

Sad to say, but that sounds like another blown seal.

Paul.

[doc1310]

Sorry to hear that Bull. Ask Gene what he thinks. I'm sure he has some type of warranty on his work. What weight pellets were you shooting? The air ram is very powerful and heavy pellets should be used. My gas ram whisper was having the same problems as you and a tune from Gene fixed it all. It's a .177 and I use a 10.5 gr. pellet in it. He says I can use a 8.4 gr pellet but I can't buy them locally. One thing you might consider so you don't throw away the rifle is to rebuild it yourself. It won't cost as much and you might have a lot of fun. The plans for the spring compresser are here on this site along with just about every single step on how to do it....and if you get stuck....just ask the guys. We have lots of experts here and they love to share their knowledge. Like you, I felt burned with a bad purchase. Most of us have a like story. It happens, and I'm sorry it happened to you, but you now have nothing to lose and a lot to gain by rebuilding it yourself. Lets us know what you decide.

Regards,

[Bullfrog31581]

I'm shooting Predators and Crossman Premiers in the .22. The Predators group the worst, which is surprising because they used to group well before the tune. Predators shoot excellent in the .177 post tune.

Right now I'm going to see if Gene can examine the gun and take the air-ram out and replace it with a custom spring. Although I want the advantages of the air-ram, I think its the root of my problems. The recoil is just too violent. I suspect thait it was the air-ram that blew my seals the first time and possibly the second time (presuming they are blown now) . Maybe I have a bad one. But as it is, I'd rather have a good working spring gun then a poor-working air-ram that yes, I can leave cocked and is powerful to boot, but I can't trust in terms of accuracy or consistency. If that doesn't work out for some reason, I'll try my hand and rebuilding the gun on my own.

[kidscollegefund]

So I was experiencing the same symptoms as the original poster here including metal deformation at the rear of the ram area.... finally gave up and sent the Whisper back to Pyramyd.  They replaced the AG and the new one is doing much better.  The ram doesn't seem to be as strong, there is no smoking, no scope drift/damage.  Really like this AG and glad they were able to make it right.

[airiscool]

There may be more than one model of  gas ram being used for the "Air Venturi". That may account for the differances some are seeing.

The one I recieved from Pyramid is slightly differant than the one CO_AirGunner shows in his pictures of installation done shortly before I did mine.

Anyway, turns out my troubles weren't because of the air venturi. Stupid me, the gun had a bad seal before the swap and I never checked it when I had the gun open.

Also, the scope mount stop pin was 1/8 inch diameter and my Whisper has a 1/4 inch stop pin hole in the reciever. No way the pin could stay in one spot with that much play.

Honed/de-burred the bore, put in a new seal and a 1/4 inch stop pin. Now, the Leapers scope I thought was trashed, isn't. It holds zero just as it should.

Realy nice scope for the money.

Paul.

[Bullfrog31581]

UPDATE:

In the end of October I sent my .22 back to Gene to see if he could take out the gas ram and replace it with a custom spring (I was delayed in sending it earlier because I just got married). I got the gun back a little over a week ago.

I am VERY pleased with how it performs now. It is much quieter and it doesn't shake the iron sights loose like it used to. I have a Walmart-special Bushnell scope on it and so far its holding up well. I can't shoot it every day because I live in an apartment now and don't have a back yard to shoot in. I'm going to the deer woods this afternoon and may take it with me to do some plinking. I'll try to get some pictures up soon to show how its grouping.